Dr. Terence Speed, a professor of statistics at UC Berkeley, had previously worked at the University of Sheffield, served as a mathematics professor and department chair at the University of Western Australia, and led an Australian government research group of mathematicians and statisticians. Called by Peter Neufeld, he testified for the defense as a DNA statistics expert on August 7 and 8, 1995, undergoing direct examination, cross-examination by prosecutor Rockne Harmon, redirect, recross, and further redirect. Harmon aggressively challenged Speed's qualifications and limited case-specific analysis, while Speed disputed Harmon's assertion that Dr. Weir's population-frequency estimate was the only statistical information before the jury.