Aside from Marc Marquez, who is Valentino Rossi's greatest MotoGP rival?

In terms of pure bitterness, Rossi v Biaggi edges it perhaps. But in terms of raw competition, Jorge Lorenzo was by far the toughest rival and teammate Rossi ever had to face in direct duels on track. Against Marquez, it felt like the off-track saga outweighed their battles.

shay.rogers9mo ago

In a sense that from a competitive perspective, they were always close, I'd say Jorge Lorenzo. Outside of Yamaha, maybe Casey Stoner

kyle.archer9mo ago

It has to be Max Biaggi - The two Italians forged one of the most bitter rivalries in world championship history, even when they were not sharing the same grid.