Matt Wallace hailed the "best shot of my life" after making a hole-in-one during the third round of the US PGA Championship.

Playing alongside three-time major winner Jordan Spieth, the Moor Park-attached professional holed out with a five iron from 232 yards on the 16th hole at Bellerive Country Club in a third round of 68.

"Best shot of my life probably," the 28-year-old three-time European Tour winner said. "In front of a few thousand people, in front of Jordan, my caddie Dave [McNeilly] as well - finally picked a good club for me!

"I flushed it right into my zone. We can't see where it lands into the shade, but when it landed the crowd started cheering and then it rolled in and they went mental and it kind of reverberated back to the tee and then I just went crazy. So, yeah, special day for me today.

"The whole experience of playing with Jordan, I said to him down maybe the first hole or second hole, 'Mate, this is a real privilege for me to be playing with you because 18 months ago I was on a mini-tour and I worked really hard to where I got to now'.

"He's a cool dude and very good fun out there. I played nice for eight, nine holes and then dropped back a couple on 10 and then I still said to Dave, 'I'm really enjoying this'.

"So that kept the door open for something to happen like that and it did. And it's going to teach me a lesson to do that for the rest of my life, I think."

Wallace celebrated by throwing his hole-in-one ball into the crowd and signed it for the spectator who caught it.

"People will be like, oh, that's a stupid move, but I threw it in and then I met the guy after that hole and I signed it for him and he said, 'are you sure you don't want it back?'" he added.

"And I said, 'you keep that mate'. I keep the balls that I win with and they're all on the mantelpiece, so that one will just live in my memory for being pretty cool out there."

Wallace ended the third round in a share of 21st place on five-under-par, seven shots behind leader Brooks Koepka.