1991 United States motorcycle Grand Prix

Australian Mick Doohan, Honda's number one man, encountered front-end difficulties while trying to secure a decent grid positive for the race.

Four-time World Champion Eddie Lawson told reporters he was spending a lot of time supporting his Cagiva on his knee because his front end was pushing fairly often.

Keen attention was paid to reigning 250cc champion John Kocinski, who was race-favorite Wayne Rainey's new teammate on a 500 at Marlboro Roberts Yamaha.

RACE[4]—For the main event Schwantz donned an Arai helmet custom painted in army camouflage as his personal tribute to the U.S. troops who risked their lives for operation Desert Storm.

Schwantz changed his line to put the Suzuki side-by-side with Rainey heading toward turn four but Wayne had already begun to stretch a lead as they powered through the infield.

One lap later Rainey set the fastest time of the race, working his Dunlop tires to the limit, getting sideways out of the turn two, and pulling away steadily.

Kocinski soon settled down to low 1:27 times that rivaled his teammate's but didn't get by Schwantz into second place until the end of lap 5, squeezing him out on the brakes going into the turn eleven kink before the front straight.

The scrap for fourth place was lively as Jean-Philippe Ruggia, Gardner, Lawson, and his Cagiva teammate Alexandre Barros interchanged positions several times in a four-man freight train.

Barros chased Lawson home, with Gardner charging across the line in seventh place after a brief off-track excursion in turn six where he had crashed twice before in the previous two years.

According to Michael Scott, Kocinski was so upset after his crash that he drove away from the track recklessly and refused to pull over when stopped by a policeman; he was arrested and sentenced to community service.