I was under the impression that this was a "pre-trial" and not a probable cause hearing otherwise known as a preliminary hearing in California felony cases. If you meant the latter, then yes I agree with all of the lawyers' answers above. Typically the defense does not put a case on in the prelim for tactical reasons, but the defense sure can as long as the purpose of the evidence is consistent with PC 866. Cal Penal Code 866 limits defense lawyer evidence in a prelim is limited if the prosecutor is savvy enough to request an 866 offer of proof. Hope that helps.