| 1998� | Rode for Team Kawasaki. |
| �� | 5th, 250cc AMA National Motocross Series - Won 4 rounds. |
| �� | 12th, 250cc AMA Supercross Series - Had three podium finishes - Withdrew after the ten first events (out of 16) due to injuries |
| 1997� | Member of the U.S. Motocross Des Nations Team for the seventh time - Won the AMA/Speedvision Athlete of the Year Award - Rode for Team Kawasaki. |
| �� | 250cc AMA Motocross Champion - Won 17 of 26 motos and scored seven overall victories in 13 rounds. Had an eight moto/four overall win steak. |
| �� | 250cc AMA Supercross Champion - won five rounds in Phoenix, Indianapolis, Daytona Beach, Houston and Dallas. |
| 1996� | Member of the U.S. Motocross Des Nations Team for the sixth time - Rode for Team Kawasaki. |
| �� | 250cc AMA Motocross Champion - Scored four overall victories and won eight of 26 motos. |
| �� | 2nd, 250cc AMA Supercross Series - Won the St Louis round and was the only rider to beat the champion all season. |
| 1995� | Selected for the U.S. Motocross des Nations Team and won the 250cc class - Rode for Team Yamaha. |
| �� | 2nd, 250cc AMA National Motocross Series - Scored his first career 250cc National victory in Southwick (Massachusetts) and won 5 motos. |
| �� | 3rd, 250cc AMA Supercross Series - Won his first-ever main in Las Vegas. |
| 1994� | Selected in the U.S. Motocross Des Nation Team - Rode for Team Yamaha. |
| �� | 5th, 125cc AMA National Motocross Series - Won the Gainesville, Florida and the Buchanan, Michigan rounds. |
| �� | 4th, 250cc AMA Supercross Series - 3 podium finishes. |
| 1993� | Member of winning U.S. Motocross Des Nations Team. Rode for Team Yamaha. |
| �� | 2nd, 125cc National Motocross Series - Took five overall victories and won 10 of 23 motos. |
| �� | 10th, 250cc AMA Supercross Series. |
| 1992� | Member of winning Motocross Des Nations Team. Rode for Team Yamaha. |
| �� | 125cc AMA National Motocross Champion - Overall winner of six of 11 rounds. Won his first career AMA National at Buchanan, Michigan on July 5. |
| �� | 10th, 250cc AMA Supercross Series - Eight top-ten supercross finishes, including a season high fifth at Seattle, Washington. |
| 1991� | Rode for Team Kawasaki. |
| �� | 3rd, 125cc AMA National Motocross Series - Five podium finishes. |
| �� | 2nd, 125cc AMA West Supercross Series - won four events. |
| 1990� | Rode for Team Kawasaki. |
| �� | 5th, 125cc AMA National Motocross Series. |
| �� | 4th, 125cc AMA West Supercross Series - Won two events. |