Mick Doohan
Kenny Roberts
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Mick Doohan leads 5 of 5 categories. Our all-time ranking places Mick Doohan at #5 and Kenny Roberts at #7.
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The case for Mick Doohan
Five consecutive 500cc world championships from 1994 to 1998, a run matched in the premier class only by Agostini's seven. Doohan took 54 wins, 58 pole positions and 95 podiums from 137 starts, all with Honda, and every one of those wins came in the premier class. His 1997 season remains a benchmark: twelve victories from fifteen races, with two second places and a crash while leading his home Grand Prix by more than six seconds. The context makes it heavier. A crash in practice at Assen in 1992 left him with permanent damage to his right leg and close to amputation; he lost that year's title to Wayne Rainey by four points, and rode the rest of his career with a thumb-operated rear brake because his right foot could no longer work the pedal. A crash at Jerez in 1999 ended his career.
The case for Kenny Roberts
Three consecutive 500cc world championships from 1978 to 1980, the first of them as a rookie, from a career of only 60 Grand Prix starts. Roberts took 24 wins, 22 in the premier class, and 44 podiums, having already won back-to-back AMA Grand National titles in 1973 and 1974 and completed the Grand Slam of victories across all five American dirt-track and road-race disciplines. His influence outweighs his totals. He imported dirt-track technique to Grand Prix racing, deliberately breaking rear traction to steer a 500cc two-stroke, and every rider since has ridden some version of that. Off track he was equally consequential: his threatened breakaway World Series in 1979 forced the FIM to improve circuit safety and lifted rider payments dramatically. He later ran his own team and built his own three-cylinder 500cc machine.