Wallabies halfback Will Genia is in doubt for tomorrow night's Tri Nations decider against the All Blacks in Brisbane after a second collision at training.
 
In a major scare for his side, Genia will have to wait for a clearance today from team doctors after copping a head knock in a collision with reserve lock Rob Simmons.

On Tuesday another towering Reds forward, Radike Samo, split Genia's head open and left him dazed after charging into him in another highly physical training session.

Genia's back up Luke Burgess has not played for two months due to a broken hand.

The All Blacks and Wallabies match kicks off 10pm tomorrow.

Story by: Dhanjay Deo