Tennis controversy erupts over 'once in a lifetime' moment

A “once in a lifetime” winner or an illegal point that shouldn’t have counted?

Croatia’s Ivan Dodig kicked off a debate in the tennis world after seemingly inventing a new shot at the ATP Cup on Monday.

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The Croatian doubles exponent pulled off a shot which Nick Kyrgios would be proud of - an incredible 180 degree lob that landed flush on the line.

Seemingly in no-man's land, a few metres from the net, Dodig looked out of the point when Poland's Hubert Hurkacz hit a backhand smash at his opponent's feet.

Ivan Dodig stunned viewers with a spinning no-look winner at the ATP Cup. Pic: Tennis TV

But after missing a more traditional shot, Dodig pirouetted and reversed his forehand behind his back to deliver a stunning winner over the top of Hurkacz and partner Lukasz Kubot.

There was some initial suggestions Dodig touched the ball before his fancy footwork helped win the day, with fans divided on social media.

‘The best possible scenario’

The Croatian, however, was adamant that he didn’t touch the ball twice.

"I definitely didn't hit it with the hand. If (it) was, it was with my nail or something," he said.

"And the point was, yeah, it happens once in a lifetime ... it's the best possible scenario."

Dodig and partner Nikola Mektic won the match, which secured Croatia the tie, 2-1.

With AAP