Max Biaggi insists he will keep on fighting to retain his World Superbike Championship crown, despite slipping 72 points behind Carlos Checa at Misano.

A double winner at Misano last season, Biaggi had no answer to arch rival Checa this year, the Italian unable to translate early leads in both races into a first victory of the season.

Still, Biaggi was satisfied with his brace of second place finishes having been a doubt to race at all after damaging his ankle in a free practice accident.

"I pushed to the maximum the whole time, even when the second place was securely locked up, and in spite of my physical conditions which were far from perfect," the Aprilia Alitalia rider said. "I took some risks but I never gave up. But Carlos is extremely strong lately. He has always ridden well here. I was able to keep up with him but not attack him."

Though he was able to keep Checa's points' increase pegged at ten points, Biaggi admits he is facing a challenge to keep his rival honest as the season heads into its second half. Nonetheless, he maintains he is not ready to accept defeat yet.

"There is a large gap, but I mustn't think about that too much. That can't keep me from continuing to battle. At this moment this is the most we can obtain but I am certain that I can come back to victory, for me and for the team. We're always working hard and it would be a great impulse of enthusiasm."