Defense attorney Barry Scheck conducted a devastating cross-examination of LAPD criminalist Dennis Fung, systematically exposing contradictions between his testimony and crime scene videotape evidence, gaps in his DNA training, and major inconsistencies in chain of custody documentation. Videotape evidence proved Fung's timeline testimony false—showing evidence collection occurring while the coroner's staff was still present. The day featured multiple procedural battles over videotape admissibility, with the court restricting some segments but allowing the most damaging contradictions through.

• Crime scene videotape directly contradicts Fung's testimony that evidence collection began after coroner's staff left—shows coroner's assistant present during Mazzola's glove collection
• Scheck exposes Fung's lack of formal DNA training and ignorance of contamination risks from invisible blood particles
• LAPD's practice of using plastic bags for wet bloodstains contradicted by standard forensic textbooks
• Sock measurements are transposed between Fung's field notes and official evidence collection sheet
• June 14th Bronco search conducted by unidentified B.A.D. detective with no documentation whatsoever
• Blood evidence at rear gate not collected on June 13th but appears in photographs weeks later
• Complete absence of blood throughout Simpson's Rockingham residence undermines prosecution narrative