Arnelle Simpson, O.J. Simpson's daughter, was the first witness called by the defense when it opened its case on July 10, 1995. She had been at the Rockingham estate the night of the murders and was awakened by police shortly after 5:00 a.m. on June 13, making her a firsthand witness to the critical hours at the Simpson residence. Johnnie Cochran conducted her direct examination, covering events that night, the days that followed, and her father's demeanor, while the defense also sought to introduce through her a 1993 letter from Nicole Brown Simpson — a move the prosecution fiercely contested. Marcia Clark cross-examined her, and the prosecution's pre-testimony objection that it had received no prior statement from Arnelle underscored how closely both sides fought to control the narrative from the defense's very first witness.