World No.1 Rahm has shortest missed putt

It's every golfer's worst nightmare - missing the short putt regarded as a tap-in.

And it was no different for world No.1 Jon Rahm at the par-three seventh at Bay Hill Club in Orlando.

The Spaniard opened the Arnold Palmer Invitational on Thursday with an even-par 72 - his four birdies neutralised by four bogeys.

One of those was on the seventh, which Rahm will probably never forget for as long as he plays the game.

Leaving his birdie putt 10 inches (0.2 metres) from the cup for par, Rahm gave the ball a weak tap and left it short leading to an avoidable bogey.

The PGA Tour confirmed it was the shortest missed putt this season.

"I wish I could give you all the excuses in the world," Rahm said after his round, "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."

It was Rahm's third bogey in seven holes, but he went on to play the back nine in two-under par to get back to even.

"It's not like it affected my play the rest of the day, because I played really good," Rahm said.

"But sitting at one-under I feel like would feel a lot better than even par. It just sucks to give that one away."

Rahm, who is making his tournament debut, is tied for 51st after the opening round.