📄 Cross-examination of Gregory Matheson (part 3) — Thursday, May 4, 1995
Address:
C:\DEPT103\CRIMINAL\1995\MAY\4\CROSS-EXAMINATION-OF-GREGORY-M.DOC
TRIAL
▲ Day 67 of 167

Cross-examination of Gregory Matheson (part 3)

Witness: Gregory Matheson
Examiner: Robert Blasier
Called by: Prosecution • Date: Thursday, May 4, 1995 • Utterances: 230
Defense attorney Blasier cross-examines LAPD criminalist Matheson on two fronts: first, walking through a detailed hypothetical accounting of OJ Simpson's blood reference vial to argue approximately 1.5 milliliters are unaccounted for by lab records; second, eliciting Matheson's confirmation that blood found under Nicole Brown Simpson's fingernails typed as EAP type B — a type that does not match OJ Simpson — suggesting the presence of an unidentified third party's blood. The examination ends mid-stream when a dispute arises over displaying Matheson's analyzed evidence report.
1 THE COURT:

Thank you, ladies and gentlemen. Please be seated. Mr. Matheson, would you resume the witness stand, please. All right. The record should reflect we've been rejoined by all the members of our jury panel. Mr. Blasier, you may continue.

2 MR. BLASIER:

Thank you, your Honor. Your Honor, may I display the exhibit?

3 THE COURT:

You may. Have we marked this yet?

4 MR. BLASIER:

I don't think we have.

5 THE CLERK:

1139.

6 THE COURT:

1139.

7 (Deft's 1139 for id = chart)
8 (Brief pause.)
9 THE COURT:

Well, that may be the max there, Mr. Douglas, on this one.

10 MR. BLASIER:

Mr. Matheson, I want to ask you just a few more questions about the blood vial, and I want you to assume again hypothetically that there was originally eight milliliters of blood in that vial. Do you have that in mind?

11 MR. MATHESON:

Yes.

12 MR. BLASIER:

Now, your records indicate--the business records indicate that on June 14th, Collin Yamauchi withdrew approximately one milliliter, correct?

13 MR. MATHESON:

Approximately, that's correct.

KEY QUOTE
14 MR. BLASIER:

And I'm afraid this is much too high. Can you reach that, take off the one ml.?

15 THE COURT:

Mr. Cochran, for the purpose of this presentation, I would suggest we move this over here so it's actually more--

16 MR. BLASIER:

Your Honor, actually that's the only one I can't reach.

17 MR. COCHRAN:

He's seen it all already.

18 THE COURT:

Let's put it here.

19 MR. COCHRAN:

Thank you, your Honor.

20 THE COURT:

It will be easier to work with.

21 (Brief pause.)
22 MR. BLASIER:

Now, Mr. Matheson, do you agree that, following our hypothetical, that as of the 14th, after Mr. Yamauchi withdrew his approximately one milliliter, there would be approximately seven milliliters left if you started with eight?

23 MR. MATHESON:

That's correct.

24 MR. BLASIER:

Now--now, the toxicology records that we talked about indicated that as of June 20th, there was 5.5 milliliters remaining, correct?

25 MR. MATHESON:

Approximately according to the records, yes.

26 MR. BLASIER:

And there were no other withdrawals between Mr. Yamauchi's withdrawal on the 14th and when toxicology did their analysis on approximately the 20th, correct?

27 MR. MATHESON:

That's my understanding, yes.

28 MR. BLASIER:

So you would agree, would you not, that if that is the case, that there were approximately 1.5 milliliters of blood unaccounted for that Mr.--gone from Mr. Simpson's reference tubes?

29 MR. GOLDBERG:

Argumentative, unaccounted for, your Honor, calls for conclusion, speculation.

30 THE COURT:

Rephrase the question.

31 MR. BLASIER:

Do you know where that 1.5 milliliters went, Mr. Matheson?

32 MR. GOLDBERG:

Assumes facts not in evidence, argumentative.

33 THE COURT:

Overruled. Rephrase the question though.

34 MR. BLASIER:

Would you agree that, according to your own business records, that if there were 5.5 milliliters of blood remaining on the 21st and there had only been one milliliter taken out of that blood and you started with eight, there would be 1.5 milliliters unaccounted for?

35 MR. GOLDBERG:

Improper hypothetical.

36 THE COURT:

Overruled.

37 MR. GOLDBERG:

Also argumentative as to unaccounted for.

38 THE COURT:

Sustained. Rephrase the question.

39 MR. BLASIER:

1.5 milliliters less in that tube than you would expect?

40 MR. MATHESON:

Approximately, that's correct.

KEY QUOTE
41 MR. BLASIER:

Now, the next withdrawal that your records indicate is on the 25th, and that would be--I'm sorry--the withdrawal for toxicology, would you agree that the records indicate that that micro centrifuge tube which holds 1.5 milliliters maximum was taken and some of that was returned?

42 MR. MATHESON:

I'm sorry. I don't understand. You mean some of the tube or some of the blood in the tube?

43 MR. BLASIER:

No. I mean--let me do that one again. The blood vial that you've examined that we saw in the picture has that micro centrifuge tube back in it, correct, with the vial?

44 MR. MATHESON:

Yes. That's correct.

KEY QUOTE
45 MR. BLASIER:

And there's still some blood in that micro centrifuge tube, correct?

46 MR. MATHESON:

Yes, there is.

47 MR. BLASIER:

And that originally as a maximum would have held 1.5 milliliters, correct?

48 MR. MATHESON:

Correct.

49 MR. BLASIER:

And according to Mr. Yamauchi's notes, he estimated that there was approximately three-quarters of a mill left, correct?

50 MR. MATHESON:

That's what he recorded, yes.

51 MR. BLASIER:

Now, would you agree that, therefore, toxicology would have used approximately, at a maximum, about three-quarters of a milliliter?

52 MR. MATHESON:

At a maximum, yes.

53 MR. BLASIER:

Now, if we remove three-quarters of a milliliter, we're now down to roughly 6.2, 6.3; would you agree?

54 MR. MATHESON:

Approximately, yes.

55 MR. BLASIER:

All right. Now, the next withdrawal was Mr. Yamauchi on the 25th for purposes of ABO typing and other serological typing, correct?

56 MR. MATHESON:

Yes.

57 MR. BLASIER:

And his records indicate that he took approximately .75, correct?

58 MR. MATHESON:

That's correct.

59 MR. BLASIER:

Now, I'm going to take down .70 to be conservative, even though it was .75.

60 MR. GOLDBERG:

I object to that being conservative. That's an under estimation.

61 THE COURT:

Sustained. Rephrase that.

62 MR. BLASIER:

Well--

63 THE COURT:

That's argument, counsel. Just take it down.

64 MR. BLASIER:

Okay. I'm trying to figure out how to get to .75 here, your Honor.

65 MR. BLASIER:

This is approximately .05. Would that look like approximately .05? Very small amount, isn't it?

66 MR. MATHESON:

In relation to the rest of your bars, yes, it is.

67 MR. BLASIER:

All right. And if you remove .75, according to the business records that you've referred to, that would leave at that point approximately 5.5, correct?

68 MR. MATHESON:

Yes.

69 MR. BLASIER:

Now, you indicated at that point that you took--there was a small thread of just a couple of drops by Mr. Yamauchi on or about the 27th, correct? Correct?

70 MR. GOLDBERG:

That misstates the testimony.

71 THE COURT:

Sustained. Rephrase the question.

72 MR. BLASIER:

On the 27th or thereabouts, Mr. Yamauchi took an extremely small amount for a thread for electrophoresis, correct?

73 MR. MATHESON:

He prepared threads for electrophoresis, that's correct.

KEY QUOTE
74 MR. BLASIER:

And that requires almost nothing, correct?

75 MR. MATHESON:

Well, the threads themselves require very little, but you do have loss in what's in the spot plate and what's in the pipetter.

76 MR. BLASIER:

Okay. Now, the Defense was allowed to take one milliliter in September, correct?

77 MR. MATHESON:

Yes, that's correct.

KEY QUOTE
78 MR. BLASIER:

And that's in--and there are records of that; are there not?

79 MR. MATHESON:

They were given approximately one milliliter, that's correct.

80 MR. BLASIER:

Now, you indicated that at some point, you took out some blood, but the amount is not reflected in any business record anywhere?

81 MR. MATHESON:

That's correct.

82 MR. BLASIER:

So as far as the business records are concerned, in terms of what's written down and when there are withdrawals, when there is an amount indicated, under the hypothetical, if-- incidentally, have we taken off everything to account for all of the withdrawals where there is an amount written down?

83 MR. MATHESON:

I believe so, yes.

84 MR. BLASIER:

Okay. The only thing remaining is the one that you didn't write the amount down, correct?

85 MR. MATHESON:

That's correct.

86 MR. BLASIER:

Now, assume hypothetically again that on Sep--on January, when you measured the quantity of blood left in both the reference tube and the micro centrifuge tube, there was a total of 2.8 or--I am sorry--2.6 milliliters. Do you have that assumption in mind?

87 MR. MATHESON:

Going off that assumption, yes.

88 MR. BLASIER:

Would you agree that under that hypothetical, following just the business records of withdrawals, that as of January of 1995, there would be a total of approximately 1.9 milliliters of blood unaccounted for?

89 MR. GOLDBERG:

Object to the phrase "unaccounted for" as argumentative.

90 THE COURT:

Sustained.

91 MR. BLASIER:

Unaccounted for by the business records.

92 MR. GOLDBERG:

Well, it's still argumentative.

93 THE COURT:

Overruled.

94 MR. MATHESON:

If you're referring to only those that are specifically recorded and not taking into account what is left in pipettes, but actually what was delivered in certain areas, then that's an approximation, yes.

95 MR. BLASIER:

And by your earlier testimony, in terms of the number of swatches, if you could get 150 swatches out of 1.5 milliliters, you could get correspondingly more swatches out of 1.9. Would you agree with that?

96 MR. MATHESON:

Yes, given the hypothetical.

97 MR. BLASIER:

Now, the only other withdrawal that we know about that you've testified is the one that you did where you did not write down any particular amount, correct?

98 MR. MATHESON:

As I'm sitting here right now, right, that sounds correct.

99 MR. BLASIER:

And you indicated that you started with a half to one milliliter, that's your best recollection?

100 MR. MATHESON:

I would say I used a minimum of a half mill and it could be as high as one.

101 MR. BLASIER:

And according to what you had told us before, you don't recall it now, but you put it back?

102 MR. MATHESON:

Well, I remember making that comment.

103 MR. BLASIER:

I'm sorry. What you didn't use.

104 MR. MATHESON:

That's correct.

105 MR. BLASIER:

And you used approximately six to eight drops?

106 MR. MATHESON:

For--that is the amount that would actually be consumed in the test. That is not the amount that would not make its way back to the vial.

107 MR. BLASIER:

Okay. There are other amounts that were clinging to the side of the microcen--of whatever, pipette or whatever you used to remove the blood, correct?

108 MR. MATHESON:

That's correct. That's why I gave the low end of being a .5 milliliter.

KEY QUOTE
109 MR. BLASIER:

Okay. And you--now, you indicated I think a couple days ago that rough estimate on what might have been caught on the side of the tubes was a quarter of a mill, .25?

110 MR. MATHESON:

It's a rough approximation. It's possible.

111 MR. BLASIER:

Now--and the seven or--six or eight drops accounts for approximately how much?

112 MR. MATHESON:

As far as--

113 MR. BLASIER:

How many milliliters?

114 MR. MATHESON:

Well, if we're using 20 as an approximation, the number drops per mill, that's a little less than half a milliliter.

115 MR. BLASIER:

Little more than a quarter?

116 MR. MATHESON:

Yes.

117 MR. BLASIER:

So if we say, therefore, then approximately a quarter to half is lost on the sides of the containers and is used up by you and you took out one to start with, that would reduce the total amount of blood in the vial by half a milliliter; would you agree?

118 MR. MATHESON:

In that instance, yes. That would be an approximation.

119 MR. BLASIER:

And if we remove a half a milliliter, we have now accounted for all of the known withdrawals that are recorded anywhere from Mr. Simpson's reverend sample, correct?

120 MR. GOLDBERG:

That's argumentative because it was based on the hypothetical.

121 THE COURT:

Sustained.

122 MR. BLASIER:

Hypothetically. Under our hypothetical we've been talking about, we've accounted for everything that, under the hypothetical, was taken out of Mr. Simpson's reference tube, correct?

123 MR. MATHESON:

Well, you've accounted for everything except for--you know, we gave this situation of the approximate amount that would be left in the vial that I worked on or the centrifuge tube that I worked on. We have not taken into account--excuse me--every other transfer device or measuring device that is done by other people; example being, when we gave a milliliter to the Defense on the date of I believe it was September 30th, there is going to be some retained in that. We delivered approximately a milliliter, but there is going to be a little bit more. And every time you open the cap up, there's blood clinging to the inside of the cap. You set that down normally with a chem-wipe, blood is going to be lost into the chem-wipe at that point. So there's constantly little bits that are going out just in the process of handling, and that has not yet been taken into account.

124 MR. BLASIER:

And these are--when you say approximately one milliliter was removed, that means it could be less too, correct? All of those approximations could be lower?

125 MR. MATHESON:

Well, in relation to the one that Mr. Yamauchi did on my transfer of the amount that I provided for the Defense, that was done with a calibrated pipette. So one milliliter was delivered then plus whatever adhered to the tips and to the vials and that type of thing would have been not returned.

126 MR. BLASIER:

With the other entries, withdrawals that your people did, those are estimates and could be slightly less than a milliliter, correct?

127 MR. MATHESON:

They are approximations, yes. They could be either slightly less or slightly more.

128 MR. BLASIER:

So would you agree under the hypothetical that as of January, taking into account all of the other withdrawals that we talked about, there is still approximately 1.5 milliliters that is not accounted for from the records and from your recollection of the withdrawal?

129 MR. GOLDBERG:

Argumentative as to "accounted for."

130 THE COURT:

Overruled.

131 MR. MATHESON:

I would say that it is probably less than that because the other factors I mentioned like losing it in the handling, opening the tube and the pipettes and that type of thing.

132 MR. BLASIER:

We can take this down.

133 MR. BLASIER:

Now, Mr. Matheson, I want to ask you some questions about the blood found under Nicole Brown Simpson's fingernails. Do you have that in mind?

134 MR. MATHESON:

Yes, I do.

135 MR. BLASIER:

Now, is it true that in homicide cases, particularly homicide cases involving some form of assault, physical assault, it is routine to collect the fingernails of the victims?

136 MR. MATHESON:

Yes, it is.

137 MR. BLASIER:

And the purpose for that is that the victim, possibly in an assault case, might fight back and might scratch someone and, therefore, get biological material like blood from the perpetrator under the fingernails, correct?

138 MR. MATHESON:

That's one of the reasons for collecting them, yes.

139 MR. BLASIER:

And there's even more reason to do that if you have a--an assaultive situation where the victim has defensive wounds on his or her hand indicating a possible struggle?

140 MR. GOLDBERG:

Argumentative, beyond the scope.

141 THE COURT:

Overruled.

142 MR. GOLDBERG:

No foundation for this witness' opinion.

143 THE COURT:

Sustained.

144 MR. BLASIER:

In any event, those are routinely taken for purposes of determining whether you can identify a perpetrator's blood under a victim's fingernails, correct?

145 MR. GOLDBERG:

Asked and answered.

146 THE COURT:

Overruled. Is that correct?

147 MR. MATHESON:

Yes.

148 MR. BLASIER:

Now, as I understand it, that was done in this case and you conducted an examination of the scrapings from under the fingernails of Nicole Brown Simpson, correct?

149 MR. MATHESON:

That's correct.

150 MR. BLASIER:

And there were scrapings taken from both hands under all the fingernails on each hand, correct?

151 MR. MATHESON:

Yes.

152 MR. BLASIER:

And the numbers that we've used to designate those are 84-A and B, correct?

153 MR. MATHESON:

Yes, that's correct.

KEY QUOTE
154 MR. BLASIER:

And that's the evidence item number that was used and the number that you've used in your lab for your testing purposes, correct?

155 MR. MATHESON:

Yes.

156 MR. BLASIER:

And 84-A is which hand?

157 MR. MATHESON:

Referring to my analyzed evidence report that lists those items, 84-A is the left hand scrapings, 84-B is the right hand scrapings.

158 MR. BLASIER:

And the test results that you got from running an EAP test were that the blood under those nails on both hands was a type B, correct?

159 MR. MATHESON:

That's what the results were, yes.

160 MR. BLASIER:

And there was no one in this case that you have identified that has an EAP type B, correct?

161 MR. MATHESON:

That's correct.

162 MR. BLASIER:

Mr. Simpson doesn't have an EAP type B, does he?

163 MR. MATHESON:

No, he does not.

164 MR. BLASIER:

So would you agree then that if your test results are accurate, that there is blood under Nicole Brown Simpson's fingernails from someone other than Mr. Simpson?

165 MR. MATHESON:

If the B is an actual B, yes, that's correct.

KEY QUOTE
166 MR. BLASIER:

And that's the results that you reported out, was a B, correct?

167 MR. GOLDBERG:

Well, that misstates his reports and his findings.

168 THE COURT:

Overruled.

169 MR. MATHESON:

Along--that's correct, along with an explanation alternative. (Brief pause.)

170 MR. BLASIER:

Mr. Matheson, let me show you Defendant's--I'm sorry--People's 218. Now, that was--you testified that that was your analyzed evidence report stating the results of your testing on the fingernails among other things?

171 MR. MATHESON:

No, it is not.

172 MR. BLASIER:

There's another document that is actually your report, correct?

173 MR. MATHESON:

No. This is a report on a completely different set of items.

174 MR. BLASIER:

Have you been shown your report on the fingernails?

175 MR. MATHESON:

I have that sitting in front of me in my notebook. It isn't what you handed me.

176 (Brief pause.)
177 MR. BLASIER:

May I have a document marked, please, a three-page document titled "analyzed evidence report"?

178 THE COURT:

1140, Mrs. Robertson?

179 THE CLERK:

Yes, your Honor.

180 THE COURT:

All right. 1140, Mr. Blasier. Why don't you compare that with what Mr. Matheson has in his notebook.

181 MR. BLASIER:

Dated 9-8-94.

182 MR. GOLDBERG:

This was already introduced, your Honor.

183 THE COURT:

What--

184 MR. BLASIER:

Let me--I thought that that was the other three-page report.

185 MR. GOLDBERG:

I think it was 218, your Honor.

186 MR. BLASIER:

That's what we just looked at.

187 THE COURT:

Mr. Matheson has 218. He indicates that is the wrong report.

188 MR. MATHESON:

Well, no. What I have in front of me is two pages that are marked as 216 and a third page that is 218. It's a mixture of my two sets of reports.

189 THE COURT:

All right. Why don't you take a look at that, Mr. Blasier. They appear to be paper-clipped together, an unusual clerical--

190 MR. BLASIER:

I think maybe probably accidentally we got reports mixed up yesterday or the day before.

191 MR. GOLDBERG:

Well, I think there's one report that has only one--

192 (Discussion held off the record between the Deputy District Attorney and Defense counsel.)
193 MR. BLASIER:

Your Honor, I would like to still have this marked as 1140.

194 THE COURT:

All right. What is it, Mr. Blasier?

195 MR. BLASIER:

It is an analyzed evidence report dated 9-8-94.

196 THE COURT:

All right. So marked. Proceed.

197 (Deft's 1140 for id = analyzed evd. Report)
198 MR. BLASIER:

Mr. Matheson, let me show you a document titled "analyzed evidence report" dated 9-8-94. Is that--that is your complete report for the analysis of these items including the fingernails, correct?

199 MR. MATHESON:

It is a copy of it, yes, with some areas that have been blacked out.

200 MR. BLASIER:

Now, let me show you Prosecution exhibit 218. What is that?

201 MR. MATHESON:

This is the third page or a copy of the third page of that analyzed evidence report.

202 MR. BLASIER:

And that was not provided to you at the time you were asked to testify about your report by the Prosecution, was it?

203 MR. GOLDBERG:

It's vague and also not relevant.

204 THE COURT:

Sustained.

205 MR. BLASIER:

Have you testified about page 2 of that document at all yet in this proceeding?

206 MR. GOLDBERG:

Not relevant.

207 THE COURT:

Sustained.

208 MR. BLASIER:

Take a look at page 2, please, for me.

209 (Witness complies.)
210 MR. MATHESON:

Okay.

211 MR. BLASIER:

Now--

212 THE COURT:

When you say, "that document," are we talking about 1140?

213 MR. BLASIER:

Yes.

214 THE COURT:

All right.

215 MR. BLASIER:

When you do a test such as the test that you did on the fingernails, you have what are called work papers, correct?

216 MR. MATHESON:

There are electrophoresis work sheets, yes.

217 MR. BLASIER:

And those are documents that you fill out while you're doing the actual bench work; you write down your observations of what you think the results are and how the test is done and that sort of thing, correct?

218 MR. MATHESON:

Yes, it is.

219 MR. BLASIER:

And after you do that, you prepare a final report from those bench notes, correct?

220 MR. MATHESON:

The--actually the bench notes of the--all of the different electrophoresis runs that are associated with the case then are placed onto what we call a summary sheet, which brings all the results from all the tests together into one place along with some of the observations, and the information from the summary sheet is then transferred onto the final report.

221 MR. BLASIER:

And the summary sheet is your final reading of typing for tests that you've done, correct?

222 MR. MATHESON:

It lists, yes, the final readings.

223 MR. BLASIER:

Your Honor, I would like to display this on the elmo. We need to--may I put this on the elmo?

224 MR. GOLDBERG:

May I just have one moment, your Honor, before--

225 (Brief pause.)
226 (Discussion held off the record between the Deputy District Attorneys.)
227 MR. GOLDBERG:

Your Honor, I would like to object to the showing of this report as it is being done right now.

228 THE COURT:

What's the basis, the legal basis?

229 MR. GOLDBERG:

It contains inadmissible evidence and--and inadequate foundation. I articulate it.

230 THE COURT:

Let me see counsel at sidebar. Let me have--let me see the document.

Temperature

tense

Key Quotes (4)

Gregory Matheson
If the B is an actual B, yes, that's correct.
Matheson concedes that if his test results are valid, the blood under Nicole Brown Simpson's fingernails came from someone other than OJ Simpson — a potentially exculpatory finding.
Gregory Matheson
That's correct.
Matheson confirms he did not write down the amount of blood he personally withdrew from Simpson's reference vial, leaving a gap in the chain-of-custody documentation the defense is exploiting.
Gregory Matheson
There is no one in this case that you have identified that has an EAP type B, correct? That's correct.
Locks in that no known trial participant — including OJ Simpson — matches the blood type found under the victim's fingernails.
Gregory Matheson
Every time you open the cap up, there's blood clinging to the inside of the cap. You set that down normally with a chem-wipe, blood is going to be lost into the chem-wipe at that point. So there's constantly little bits that are going out just in the process of handling.
Prosecution's attempted rehabilitation: Matheson explains routine handling losses to account for the missing volume, blunting the 'planted blood' implication.

Evidence (5)

Deft's 1139
Visual chart displayed on easel illustrating blood volume withdrawals from Simpson's reference vial under a hypothetical starting volume of 8 milliliters
introduced and used during testimony to walk through blood accounting math
People's 218
Third page of Matheson's analyzed evidence report
shown to witness; confusion arose when it was found to be mixed with pages from exhibit 216
Deft's 1140
Complete three-page analyzed evidence report dated 9-8-94, including fingernail scraping test results
marked for identification; display on ELMO objected to at end of proceeding, referred to sidebar
Informal
Fingernail scrapings from Nicole Brown Simpson — items 84-A (left hand) and 84-B (right hand)
discussed; EAP type B result confirmed, no match to any identified trial participant
Informal
Micro centrifuge tube containing residual blood, returned to Simpson's reference vial
referenced to account for approximately 0.75 ml remaining volume

Notable Exchanges (3)

Robert BlasierGregory Matheson
Blasier leads Matheson step-by-step through blood volume math — starting at a hypothetical 8ml, subtracting each documented withdrawal — to arrive at ~1.5ml unaccounted for by any written record. Matheson largely agrees with the arithmetic while trying to explain routine handling losses.
strategic
Robert BlasierGregory Matheson
Blasier establishes that EAP type B blood was found under Nicole's fingernails and that OJ Simpson does not have EAP type B, getting Matheson to concede someone else's blood may be present.
revealing
Robert BlasierGregory MathesonLance A. Ito
Confusion erupts over which exhibit is Matheson's actual fingernail report — pages from exhibits 216 and 218 had been paper-clipped together accidentally. Ito notes it as 'an unusual clerical' situation before trailing off.
procedural

Light Moments (2)

Johnnie Cochran
When Ito suggested moving the chart easel so Blasier could reach it, Cochran quipped 'He's seen it all already,' prompting Ito to proceed with the adjustment anyway.
Robert Blasier
Blasier, struggling to represent exactly 0.75ml on the bar chart, says 'I'm trying to figure out how to get to .75 here, your Honor,' eliciting a matter-of-fact instruction from Ito to just take the number down.

Credibility Attacks (2)

⚔ Gregory Matheson
omission / incomplete documentation
Blasier highlights that Matheson personally withdrew an unknown amount of blood from Simpson's reference vial but recorded no quantity, creating an undocumented gap the defense frames as suspicious.
⚔ LAPD Crime Lab
chain of custody / accounting discrepancy
Using the lab's own business records, Blasier constructs a hypothetical showing ~1.5ml of Simpson's reference blood cannot be accounted for by any written withdrawal record, implying the missing blood could have been used to plant evidence.

Witness Demeanor

(Brief pause.) — after Blasier asks about 1.5ml unaccounted for
(Witness complies.) — when asked to review page 2 of analyzed evidence report
Matheson at one point says 'As I'm sitting here right now, right, that sounds correct' — signaling uncertainty or hedging rather than confident recall

Objections

17 objections (8 sustained, 7 overruled)
Proceeding 5910 • 230 utterances • Prosecution witness
Criminal Trial
Department 103
⚖️ Start
📂 MAY 4, 1995 📄 Cross-examination of Gregory M
MAY 4, 1995 KRT DvH TD