Barry Scheck conducted a devastating and methodical cross-examination of LAPD criminalist Dennis Fung, systematically dismantling the chain of custody for blood evidence through the entire evidence-handling process. Using an authoritative forensic textbook, Scheck exposed critical violations including wet blood swatches stored in plastic bags in a warm crime scene truck for seven hours, a broken refrigerator, a three-day gap between evidence collection and formal booking, and Detective Vannatter's highly irregular direct delivery of Simpson's blood vial to the Rockingham crime scene rather than proper evidence booking procedures. Discovery issues compounded the prosecution's problems, with missing SID records and documents that the prosecution could not readily produce, while the defense attempted to introduce videotape evidence of Fung at the crime scene.

• Scheck establishes that wet blood swatches stored in plastic bags in crime scene truck rendered samples 'useless as evidence in a matter of days' per forensic textbook
• Broken refrigerator in crime scene truck exposed, undermining Fung's testimony about evidence preservation
• July 6th Bronco visit by Fung revealed with contradictory testimony about what testing occurred and why
• Three-day gap between June 13 evidence collection and June 16 formal ECU booking documented
• Detective Vannatter's direct delivery of Simpson's blood vial to Rockingham questioned; Fung admits never seeing this practice before
• Missing SID computer records tracking evidence room access discovered, with prosecution unable to promptly produce them
• Undated, possibly reconstructed evidence transfer documents introduced to suggest tampering with records
• Prosecution objects to phenolphthalein test reference during cross-exam; Judge takes matter under advisement
• Videotape evidence of Fung and Mazzola at Rockingham ordered for prosecution review overnight before admission