Casey Stoner hopes Valentino Rossi will mount a challenge in 2012 . Seven -time MotoGP champion Rossi without a win for Qatar last year . Stoner claimed second title with Seven wins for Repsol Honda . ` Adriana is doing great . Italian sees Casey Stoner as his main rival in last year .
Casey Stoner hopes Valentino Rossi will mount a challenge in 2012 . Seven -time MotoGP champion Rossi without a win for Qatar last year . Stoner claimed second title with Seven wins for Repsol Honda . Italian sees Casey Stoner as his main rival in last year .