With Casey Stoner sidelined, team-mate Nicky Hayden will go head-to-head with Mika Kallio for what could be a three-round 'job interview' for the second 2010 factory Ducati ride.

Third in the championship Stoner is the only Ducati rider to finish on the podium this season, and has scored 103 points more than next best Desmosedici rider Hayden (13th).

Hayden has a best race finish of fifth and currently sits 13 points clear of impressive rookie Kallio. Kallio has two eighth places to his credit for the satellite Pramac squad but has been a top six contender at several rounds and missed Laguna Seca due to a finger injury.

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Ducati has indicated that it wants to keep both Hayden and Kallio for 2010, but the young Finn will surely be out to prove that he deserves the factory seat, while Hayden will be aiming to justify his position by stepping into Stoner's role as the leading Desmosedici rider.

"I can't wait to get back on track and score some results which will make my team happy," said Nicky. "I hope Casey can get better over the next few weeks because we all know how quick he is when he is fit. In the meantime I need to try to make progress with the team and try to make sure that they don't miss him too much."

Hayden, the 2006 world champion, missed last year's Brno race due to injuries sustained while taking part in the X Games.

"Last season I was unable to race at Brno because I was injured, but it's a great track which was completely resurfaced last year so I expect it will be much better in terms of the lumps and bumps," said the American.

"At least this year I will find out, having spent the break at home in Kentucky preparing myself for the second half of the year, and not taking part in things like the X Games!"