Jacque, McWilliams miss day two.

The full line-up of 2007 riders lasted less than a day on track at Qatar, with both Kawasaki's Olivier Jacque and Ilmor's Jeremy McWilliams missing day two of the desert test.

Jacque was forced out due to the effects of a Tuesday accident at turn two, when he hit his head. The 33-year-old Frenchman was passed fit to ride, but opted to take a recovery day before returning to the track in better physical condition on Thursday.

"Today I feel much better than I did immediately after the crash yesterday, but I still feel pretty sore," admitted OJ. "I wanted to ride, but after the medical check up this morning we made the decision to sit out today's test, instead of risking further injury and a longer delay. I'm sorry for the team, because I know how much work we need to do before the start of the season, but I hope we can catch up on our test schedule tomorrow."

"It's a pity Olivier couldn't ride today, but the season hasn't started yet so it would have been pointless to take any risks" added Kawasaki's technical manager Naoya Kaneko. "He will almost certainly be back tomorrow, so the delay to our test schedule is not so great."

Joining Jacque on the sidelines was McWilliams, who elected to rest his still tender leg after a tentative return to action on Tuesday.

The Ulsterman sustained a broken left femur, broken collarbone and severe damage to his hand just two and a half months ago at Jerez, but also hopes to be back on track for the final day in Qatar.