Xander Schauffele discovered that last night during the final round of the Charles Schwab Challenge.

The American took a one-shot lead into the final round at Colonial as the PGA Tour emerged from its three-month coronavirus-enforced slumber. 

Despite the interests of several of the game's other biggest names, the world No.10 remained in contention for the title deep into the back nine, holing back-to-back 30-foot putts on 15 and 16 to stay in the lead. 

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That's when luck completely deserted him.

Standing over a three-foot putt for par on the 17th, the 26-year-old suffered the most brutal of horseshoe lip-outs. 

Watch what happened...

Ouch!

That bogey left him needing a birdie up the last to force his way into a play-off but it was not to be. 

"I played good enough golf to get to the number but I just didn't do it, which sucks obviously," said Schauffele afterwards. 

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The tournament was won by Daniel Berger, who defeated rising star Collin Morikawa in a play-off. 

Morikawa suffered his own lip-out agony to hand his fellow American the title.

Painful. 

The win was 27-year-old Berger's third on the PGA Tour and his first since the 2017 FedEx St Jude Classic at TPC Southwind.