Australia's Jason Day has scored a spectacular hole in one in his second round on Friday to claim third spot in the $US6 million ($7.8 million) Turning Stone Championship.

American Jeff Overton defied difficult conditions to retain the lead in the PGA Tour event.

The second round was suspended because of darkness with 23 players left on the course, after a rainy, windy day that saw two weather delays.

The second round was to resume on Saturday morning.

Overton, who led by one heading into the round, opened with a bogey but rebounded to post a three-under 69.

That put the American at eight-under 136, one shot in front of compatriot Tag Ridings.

Ridings signed for a four-under 68 for 137 with Day another shot back after his 69.

Day's second consecutive round of three-under-par 69 included an ace on the par-three sixth hole.

"I had a six-iron in my hand," the 20-year-old said.

"We were undecided with the wind. We didn't know if it was coming left to right or right to left.

"You're kind of covered in there and the par three goes down. I had about 180 to the pin, and we caught it from the right. I hit a great little punch shot there and it turned over for me.

"I don't know if it hit the flag first or not, no, it hit the ground and bounced back in the hole and I started jumping everywhere."

It was at the next hole that Day was caught in the hail shower.

"You know what, it is really cold out there," said Day, who grew up in Queensland.

"It started hailing on us. I've never played in hail before."

Australian pair Robert Allenby and Mark Hensby are one stroke behind Day.

Overton, 25, heads into the final two rounds poised to claim his first career PGA Tour victory.

His best finish this year was a tie for ninth at the AT and T National, and his best career finish was a runner-up in 2007.

AFP