The judge in former UCLA basketball star Ed O’Bannon’s antitrust lawsuit on Monday denied a motion filed by the NCAA as part of a bid to delay the scheduled start of the trial next month in federal court.

U.S. District Judge Claudia Wilken ruled against the NCAA in a motion that questioned her earlier decision on what the NCAA can use as a defense in a case that has the potential to drastically alter the way college sports are regulated.

The ruling involved one of the four motions the NCAA has filed in an effort to delay the trial over compensation for athletes for playing major sports that generate billions of dollars in revenue for the NCAA and its member schools.

The trial is scheduled to begin June 9.