The defense questioned the prosecution’s physical evidence during this day. Barry Scheck cross-examined FBI shoe print expert William Bodziak about his decision not to search the computerized shoe database for the parallel-line impressions and about the basis for his blood-pattern opinions. Bodziak acknowledged not searching the database and explained that he did not believe the marks were shoeprints. The defense then introduced surrebuttal witness Prof. Herbert MacDonell, who testified that his blood-smearing experiment produced negligible shrinkage and could not account for the evidence gloves' estimated 10-15% size difference. Clark challenged his methodology, including his use of brand new gloves and lack of expertise in glove manufacturing or leather treatment.

• Bodziak admits he never searched FBI's computerized shoe database for parallel line patterns despite using it to identify Bruno Magli prints
• Scheck challenges Bodziak's expertise on fabric impressions, blood discoloration, and interpretations of Dr. Henry Lee's testimony
• Bodziak testifies that the parallel line imprint photographed by Dr. Lee on June 25th was not present on June 13th and has no significance to the murder
• Judge takes judicial notice of moon phase on night of murders: 12% waxing crescent
• Prof. Herbert MacDonell called as surrebuttal witness on glove shrinkage from blood saturation
• MacDonell's controlled experiment showed negligible shrinkage after blood was smeared on the gloves, and he testified blood smearing could not account for 10-15% shrinkage
• Clark challenges MacDonell's use of brand new gloves rather than well-worn evidence gloves and questions his expertise in glove manufacturing and leather treatment.
• Prosecution conditionally rests rebuttal case; administrative session addresses witness scheduling and excludes Officer Sherry Ray's testimony on Mark Fuhrman