Marc Marquez
Kenny Roberts
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Marc Marquez leads 5 of 5 categories. Our all-time ranking places Marc Marquez at #3 and Kenny Roberts at #7.
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The case for Marc Marquez
Nine world championships: 125cc in 2010, Moto2 in 2012 and seven premier-class titles in 2013, 2014, 2016, 2017, 2018, 2019 and 2025. He became the youngest premier champion at 20 years and 266 days, having already become the youngest premier-class winner at Austin aged 20 years and 63 days. In 2014 he won 13 of 18 races, still the single-season record. Through the end of 2025 he had 73 premier-class wins, second only to Rossi, 99 career wins and 126 premier podiums from 206 starts. The 2025 season was the most statistically dominant on record: 11 Grands Prix, 14 Sprints and 545 points, a total no rider had reached, in his first year with the factory Ducati. It came after five operations on his right arm, 30 races missed and 2,184 days between championships, which is the strongest single argument in his favour.
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.