St Louis: Gary Woodland posted a record low halfway score at a PGA Championship, Brooks Koepka and Charl Schwartzel matched the lowest round in tournament history and half the field failed to complete the weather-delayed second round on Friday.

A day that began under a cloudless sky ended prematurely when a thunderstorm ended play at 3.35 p.m. local time (2035 GMT) at Bellerive.

Tiger Woods, three-under par after seven holes, was among half the field scheduled to finish the second round on Saturday.

Woodland aside, the stellar leaderboard included a long list of Major champions, as well as a couple of emerging talents who could soon join the ranks.

World No. 44 Woodland followed up his opening six-under 64 with an almost as impressive 66 to set the pace at 10-under 130, one stroke ahead of Kevin Kisner.

US Open champion Koepka jumped within two strokes after a seven-birdie 63, while Schwartzel moments later became the 16th player to shoot the score at the season's fourth Major.

He joined world No. 1 Dustin Johnson (66) and Belgian Thomas Pieters (66) three off the pace. American Rickie Fowler was also three back after 10 holes, best of those unable to finish.

India's Shubhankar Sharma was one-under through seven holes in the second round when play was stopped. Sharma playing his fourth successive Major this year, was two-under for the tournament at that stage and looked set to make his second straight cut in a Major.

Sharma's senior colleague Anirban Lahiri had another miserable day on the greens as he missed a bunch of makeable putts and went through a horrible streak of four bogeys in five holes on the back nine to card three-over 73.

Sharma missed three putts between 14-16 feet and one under seven feet, but got all pars while he birdied seventh. Lahiri missed no less than four putts inside 10 feet.

Still he was one-under when he came off the 11th green. But from there he bogeyed four times between 12th and 16th and that's where he lost the chance to stay on for the weekend.

Woodland, a long and straight hitter whose short game is not always a thing of beauty, was satisfied with his day's work.

"Probably didn't play as well as I did yesterday top to bottom, but the iron game really kept me in it today," he said.

Close behind was Kisner, at 34 emerging as a player of the highest order in the majors. He led into the final round at last year's PGA Championship and also at last month's British Open.