Dr. Michael Baden testified as a defense forensic pathologist, called by Robert Shapiro to systematically challenge the prosecution's medical examiner testimony and crime scene practices. From the outset, Baden attacked the standard of proof used by prosecution witness Dr. Lakshmanan, arguing that testimony based on medical "possibilities" rather than reasonable medical certainty was misleading and unhelpful to the jury. He testified that Simpson's hand injuries appeared consistent with broken glass rather than a knife, and in the civil trial advanced a two-assailant theory — though in both cases, prosecutor Brian Kelberg's aggressive cross-examination exposed inconsistencies and worked to undermine his credibility as a paid defense expert.