Defense attorney Peter Neufeld conducted a devastating cross-examination of prosecution DNA expert Dr. Bruce Weir, exposing a significant computational error where Weir failed to include certain genotype pairs in Bronco mixture calculations, creating statistical bias against Simpson. Neufeld systematically challenged Weir's methodology, attacked his credibility regarding the National Research Council's DNA statistics report, and established that Weir had been excluded from the second NRC committee because he was perceived as a 'partisan.' In the afternoon, the court heard motions on expert report discovery, subpoenas related to Mark Fuhrman's alleged racial slur admissions, and release of sealed juror dismissal transcripts.

• Dr. Weir conceded he failed to include additional genotype pairs in Bronco items (303, 304, 305, 31, G10) calculations, biasing results against Simpson
• Neufeld exposed Weir's inconsistent application of genotype pairs across evidence items—including them for glove exclusions but omitting them for Bronco non-exclusions
• Neufeld established Weir's opposition to the NRC methodology and that Weir was excluded from a second NRC committee for perceived partisanship
• Judge sanctioned Neufeld $250 for speaking too loudly at sidebar during a contentious evidentiary dispute
• Court denied motion to quash subpoenas to DA personnel regarding Fuhrman's alleged admission to racial slurs, ordered in camera questioning
• Court ordered release of sealed juror dismissal transcripts by July 3rd, with personal identifying information redacted