The defense mounted a sustained attack on DNA evidence through the cross-examination of Cellmark laboratory director Dr. Robin Cotton, challenging evidence storage conditions and arguing that wet blood swatches left in sealed bags in hot, unrefrigerated trucks could degrade and produce false results. Neufeld also accused the prosecution of a 'forensic ambush' by delaying RFLP testing on Bronco evidence items. Procedural disruptions, including a courtroom power surge, and factual corrections regarding seized cash punctuated the day's contentious proceedings.

• Dr. Robin Cotton's cross-examination focused on biological evidence storage failures and potential DNA degradation
• Defense presented photographs of actual Bundy swatches showing DNA quality differences caused by storage conditions
• Power surge triggered automatic shutdown of courtroom air conditioning and heating system
• Defense accused prosecution of forensic ambush strategy regarding delayed RFLP testing on combined Bronco items
• Prosecutor corrected prior day's misstatement—cash was found on Cowlings' person, not in OJ's black bag
• Statistical frequency calculations for boot stain mixture evidence incomplete, delayed until Monday