A pivotal day combining expert testimony on evidence integrity with O.J. Simpson's direct account of his relationship with Nicole Brown Simpson. Henry Lee's cross and redirect examination probed blood evidence and sock transfer patterns, while coroner criminalist Gary Siglar's deposition revealed that he directly released the victims’ blood samples to Detective Vannatter, a procedure he described as uncommon. Simpson testified extensively about his life, the 1989 domestic violence incident (admitting he was 'very physical' with Nicole but denying intentional strikes), and his relationship trajectory with her through 1994, attempting to rehabilitate his credibility on the central domestic violence issue.

• Henry Lee concedes he has no scientific evidence that any law enforcement officer planted evidence, while adding that such things have happened in the past.
• Gary Siglar testifies that he personally released the victims’ blood samples to Detective Vannatter, a direct-release procedure he described as uncommon.
• O.J. Simpson admits being 'very physical' with Nicole in 1989 but explicitly denies intentionally hitting or slapping her.
• Defense systematically links crime scene physical evidence positions to establish a prolonged struggle narrative at Bundy Drive.
• Plaintiff's counsel Kelly moves to bar introduction of Nicole's alleged drug use, drinking, and romantic history.