Max Biaggi says he isn't feeling entirely confident about his chances during the third round of the World Superbike Championship at Assen after discovering an issue on each of his Aprilia Alitalia RSV'4s.

Biaggi crashed in the free practice session ahead of Superpole, the Italian claiming to have been caught out by an 'inexplicable jerk'. He said the same issue arose on his spare bike during Superpole, albeit to a lesser extent.

Though Biaggi would go on to secure a spot on row two in sixth position, the reigning champion admits he is unsure whether it can be rectified before the races now.

"Everything started with the crash in the last practice session, which forced me to use the bike which I've used the least for Superpole," he said. "The inexplicable jerk which caused the crash came back in a lesser form on the second bike as well.

"In the end we earned this sixth place which isn't bad if we consider the circumstances, but I can't say that I'm completely sorted for tomorrow. Maybe we needed a little more time. Now we'll have to try and shave something off during the warm-up and give it our most during the two races."