Istomin stuns Hewitt with 'never-before-seen' winner

Denis Istomin has left commentators in awe with an incredible winner against Lleyton Hewitt and Sam Groth.

The Uzbek and Mikhail Kukushkin lost 6-3, 6-3 to the Aussies on Thursday, but Istomin produced some absolute magic.

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Istomin was forced way off court by a Groth volley, but managed to uncork an amazing backhand that hit off the net post and landed in.

How did he do that? Image: Channel 7

Hewitt was left completely stunned as the ball went sailing past him, and commentators couldn't believe what they'd seen.

"That's a winner!" John Fitzgerald exclaimed.

"I have never ever seen that."

Groth was so stunned he had to question the umpire whether or not it was actually allowed.

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