The prosecution presented DNA expert Gary Sims to testify about RFLP results from OJ's Bronco console, but the defense vigorously attacked the chain of custody and contamination procedures. The day devolved into heated procedural disputes over a videotaped statement of nurse Thano Peratis (who drew OJ's blood), with a mysterious 14-minute gap and allegations of witness coaching. Judge Ito sanctioned the prosecution and sustained multiple defense objections.

• Judge Ito sanctioned prosecution $1,000 for arriving late to a hearing, following earlier $250 fine
• Gary Sims presented RFLP results from Bronco console samples; defense questioned chain of custody between June 14 and August 26
• Judge upheld preclusion of Bronco fiber evidence, rejecting prosecution's rebuttal theory about Fuhrman's vehicle
• Prosecution's edited Peratis videotape was admitted after multiple disputes about whether it was edited properly
• A 14-minute gap in the Peratis videotape became central point of contention over potential witness coaching
• Teresa Ramirez, the videographer, testified explaining the gap resulted from setting up Peratis's entertainment system
• Marcia Clark formally warned for conduct bordering on contempt when she accused the court of penalizing the People