Jon Rahm is the best golfer in the world—he’s been ranked No. 1 since last July. But even the best have blunders.

Rahm’s will only go down as one of the worst of all time.

During Thursday’s opening round of the Arnold Palmer Invitational in Orlando, Fla., the reigning U.S. Open champ had a 10-inch putt for par on Bay Hill’s par-3 seventh hole. But he left it embarrassingly short — according to the PGA Tour’s shot tracker system his putt traveled only an inch.

Rahm knocked his next attempt in, plucked the ball from the hole and looked incredulously at it.

According to the tour, the make percentage on tour for putts inside a foot: 99.96 percent. It was also the shortest missed putt so far this season.

“I wish I could give you all the excuses in the world,” Rahm said. “But no, it’s as simple as— you know, it just didn’t feel good in my hands, and I tried to stop, and I didn’t. I just simply didn’t stop. I don’t know. It was very odd.

“I tried to stop it, yeah. It didn’t sit well in my hands. I was a little sweaty. I’ve seen many things. I’ve seen from the putter get a little stuck on a blade of grass on the way back and do something funky, hit the ground before because you’re not paying attention. I’ve seen so many things from a foot. I’ve seen some of the best putters in the world miss it because you don’t really take a proper stance. It sucks to give away a shot like that, to be honest.”

Still, it could have been worse.

Hale Irwin was making a run at the lead in the third round of the 1983 British Open when he left a birdie putt from even closer short on the par-3 14th at Royal Birkdale in England. He went on to finish in second, one stroke back. In 2012, In-Kyung Kim had a 14-inch putt to win on the final hole of the LPGA’s Kraft Nabisco Championship — also a major — and lipped out. She lost to Sun Young Yoo in a playoff.

Rahm, meanwhile, bounced back with three birdies on the back nine before finishing with an even-par 72. He’s seven strokes back of leader Rory McIlroy.