Robert Blasier was a defense attorney in the criminal and civil trials whose work focused substantially on DNA, blood, trace evidence, and evidence-handling issues. He cross-examined LAPD criminalist Gregory Matheson about laboratory accreditation, written procedures, evidence tracking, contamination controls, and reference-blood accounting, eliciting a conditional calculation involving 1.5 milliliters, and he challenged FBI chemist Roger Martz’s EDTA testing methods, records, and conclusions. Blasier also delivered part of the defense’s civil closing argument, challenging the plaintiffs’ physical and DNA evidence, LAPD procedures, and witness accounts concerning a missing blood vial.