Ducati 'must improve' for Rossi to be Rossi
Ducati has pledged to improve its MotoGP machine after superstar signing Valentino Rossi was left just 15th fastest at the end of his Desmosedici debut at the Valencia MotoGP test.
Olivier Jacque Yukio Kagayama Mika Kallio Daijiro Kato Ryuichi Kiyonari