Furious Wawrinka snaps racquet clean in half

Stan Wawrinka completely snapped during the second set of his semi-final clash with Roger Federer, demolishing his racquet over his knee.

Federer stormed out of the blocks in Thursday night's massive all-Swiss clash, taking the first two sets to leave Wawrinka shell-shocked.

FED EXPRESS ROLLS ON: Federer marches into another Aus Open final

DRAMATIC TURNAROUND: Federer's woeful set leaves commentators stunned

After Wawrinka missed an easy backhand to drop serve in the second set and give up a 4-2 lead, the World No.4 had seen enough from his racquet, smashing it into the court before snapping it clean in half.

Stan snapped! Image: Channel 7

"That's a mighty effort in itself," said Todd Woodbridge in commentary.

"What he's taken off his serve he's put straight back in that frame."

Needless to say he was hit with a code violation for racquet abuse.

Wawrinka retreated to the locker room for a medical treatment at the end of the set, returning with the same knee taped.

Coincidence? Image: Getty

He managed to regroup and send the match to a fifth set, but fell in a thrilling semi-final.

Watch the Australian Open LIVE on the screens of Seven including the 7Tennis App and PLUS7.