Jonathan Rea says he will need to become 'Superman' in order to turn around his fortunes following a difficult start to his home World Superbike Championship event at Donington Park.

The Northern Irishman had hoped to carry his form from Misano to the Derbyshire circuit but a crash in the early stages of free practice forced him onto the back foot.

With tricky weather conditions in provisional qualifying hurting his chances of getting more useful mileage under his belt, Rea, who would emerge 15th on the initial grid, admits his day has not gone to plan.

"It's been a bit of a nightmare day," he told Radio."We had a crash this morning and then we lost a lot of time in the pit lane this afternoon, but we know the direction to go forward. I can't wait till tomorrow to get out on the bike and make sure the changes we make can help us get to the front."

Expressing the importance of Friday mileage, Rea knows he needs to make significant progress in second qualification in order for him to get back on terms with his rivals.

"It [Friday] is massively important," he added. "I need to be Superman now to turn my fortunes around because Friday assesses the momentum for the weekend. If you can get through Friday cleanly, you should qualify well in Superpole and have a good race. Right now, compared to the guys at the front, I have to find a substantial amount of time. We found some positive information, but we can't implement it till tomorrow."

Arriving at Donington Park on the high of his maiden World Superbike victory at Misano just a week earlier, Rea insists he has moved on from that weekend and is fully focused on keeping up his momentum.

"I have seen the race on TV a few times this week - they've played it pretty much flat out! Getting to Donington Park though, I want to switch off the past and concentrate on this weekend."