Wet race.
Wayne Rainey had to ride with an injured hand from a pre-season test (part of his pinky was removed).
Kevin Schwantz was on pole, and took the lead at the start from
Doug Chandler and
Mick Doohan. Rainey had a bad start.
Àlex Crivillé crashed out of his debut 500cc race;
Wayne Gardner crashes out, as did Rainey at the Dunlop Corner. Chandler took the lead of a 4-man group with Schwantz, Doohan and Kocinski. Kocinski crashed out. Doohan and Chandler dropped Schwantz. Gardner had remounted and gotten to 5th before crashing out for good a second time and breaking his leg in two places. ==500 cc classification==