Image: Foremost Media.

Yamaha-mounted privateer Connor Tierney will be forced to sit out the remainder of the Pirelli MX Nationals after sustaining an ankle fracture during training last week.

The MX1 rookie, who’s been displaying promising form in his debut season, was a notable absentee at the weekend’s double-header in Raymond Terrace, the Western Australian now confirming he’ll realign his focus on the upcoming Australian Supercross Championship.

“I didn’t even crash, I was just training and jarred my ankle pretty badly through a roller section,” Tierney revealed to MotoOnline.com.au. “I fractured a small bone inside my ankle, which will sit me out for the rest of the MX Nationals.

“It’s going to be five weeks in a moon-boot with no twisting or moving it, I actually kept riding thinking it was just jarred and didn’t really want to believe it, but when I took my boot off it kind of blew up – it’s unfortunate. I still feel like I have more to give, which is probably the most frustrating part. I’m just looking forward to concentrating on supercross now.”

Tierney will continue to pilot a Yamaha YZ450F in the supercross championship, which is scheduled to kick-off on 15 September at Jimboomba in Queensland.