Tom Sykes's start to the 2013 World Superbike Championship is off to an inauspicious start after the Briton injured himself in a crash during the early stages of 'unofficial' testing at Phillip Island.

The Briton, who starts the season as one of the title favourites after coming to within half-a-point of the 2012 championship, was only five laps into his day when he high-sided from the Kawasaki at the Siberia left-hander on a damp patch of tarmac.

Causing significant damage to the bike, Sykes was subsequently taken to the medical centre for an inspection of a possible wrist injury. However, though he was initially given clearance to return to the pit lane, the ongoing pain would later prompt a visit to a local Melbourne hospital for an X-Ray.

Since then, Sykes has been diagnosed with a small wrist fracture, but while the injury is likely to rule him out of the remainder of testing this week, he is expected to be back on the Kawasaki for next week's official WSBK test and the opening round of the season just a few days later.

Sykes wasn't the only rider to suffer a fall during the first day of action around the recently resurfaced Australian venue, with Jules Cluzel hurting his shoulder in an accident too. Leon Camier and Loris Baz also endured tumbles.