Christian Reichardt, a chiropractor with practices in Malibu and Santa Monica, testified as a defense witness about his friendship with O.J. Simpson, which began in the summer of 1993. Called by Johnnie Cochran, Reichardt told the jury that Simpson sounded jovial and happy during a phone call on June 12th — the day of the murders — directly countering the prosecution's theory that Simpson was driven by romantic depression. His testimony drew sustained attention from both sides, with Christopher Darden conducting multiple rounds of cross-examination and Cochran returning for repeated redirect, all within a single day on the stand.