The defense mounted a significant forensic challenge through Dr. Michael Baden's testimony on blood evidence and wound patterns, but faced withering cross-examination that exposed inconsistencies and undermined his two-assailant theory. The defense also presented Michael Gladden, who observed Simpson arriving at LAX around 11 p.m., and eyewitness Thomas Tallarino, who claimed to see a suspicious person near the crime scene; Tallarino's account was contested over observation and location discrepancies and later clarified through testimony about a diagram error. A jury member was removed during the lunch recess, and fingerprint evidence showed no matches to Simpson among 17 recovered prints.

• Dr. Michael Baden extensively cross-examined on blood evidence inconsistencies, prior television statements, and inability to independently support two-assailant theory
• Jury member removed during lunch recess without explanation
• Michael Gladden testified that he observed Simpson arriving at LAX around 11 p.m. on the night of the murders
• Thomas Tallarino's account of seeing a crouching person near 875 South Bundy was challenged over his opportunity to observe and location discrepancies, with later testimony attributing the discrepancy to a diagram or street-name error
• Fingerprint examiner testified 17 latent prints recovered from scene with none matching O.J. Simpson