Dr. Robert Huizenga, OJ Simpson's personal physician, testified for the defense that Simpson suffered from serious physical ailments—severe knee arthritis, rheumatoid arthritis, and other mobility-limiting conditions—finding no major injuries except pre-existing cuts on his left hand during June 15-17 examinations. Prosecutor Brian Kelberg launched an aggressive cross-examination, attacking Huizenga's medical qualifications and credibility, notably highlighting that his famous 'Tarzan's grandfather' observation about Simpson's gait was omitted from his written report. Kelberg methodically forced Huizenga to concede that none of his documented physical findings would have actually prevented Simpson from committing the murders. The day showcased the central battle over Simpson's physical capacity to execute the crimes, with the defense presenting medical limitations and the prosecution dismantling their credibility and implications.

• Dr. Huizenga testified that Simpson had severe arthritis and mobility issues but no major injuries except pre-existing hand cuts
• Prosecutor Kelberg attacked Huizenga's qualifications, noting he had no rheumatology or orthopedic training
• Kelberg exposed that Huizenga's 'Tarzan's grandfather' observation was never documented in his formal report despite calling it significant
• Huizenga admitted Simpson could have been motivated to fake or exaggerate his physical limitations during the June 15th examination
• Prosecution forced Huizenga to acknowledge that his medical findings would not have prevented Simpson from committing the murders
• Cross-examination attacked the completeness of Huizenga's orthopedic examination and used lab results to undermine his conclusions