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Tony Gutierrez, Associated Press
A scoreboard show a weather warning during a weather delay in the third round of the PGA Championship golf tournament at Baltusrol Golf Club in Springfield, N.J., Saturday, July 30, 2016.

SPRINGFIELD, N.J. — The third round of the PGA Championship at Baltusrol Golf Club has been called for the day after nearly four hours of play being suspended by dangerous weather that included a lot of heavy rain.

Six pairings did not even start their third rounds and 37 players finished the round when play was stopped at 2:15 p.m.

Play will resume at 7 a.m. to complete the third round. To help expedite matters, the pairings for the final round of the year's final major will remain the same as the third round. However, the weather forecast for Sunday includes a chance for rain most of the day.

Jimmy Walker and Robert Streb are the co-leaders after the second round at 9 under par.

The best of Saturday's completed rounds were 5-under 65s by Padraig Harrington and Kevin Kisner.

Walker and Streb were 40 minutes from teeing off in the third round when clouds gathered, the sky rumbled and the horn sounded to suspend play. The course was pounded with rain and players eventually were sent home.

Phil Mickelson won the 2005 PGA Championship when tournament organizers took a gamble on not moving up the Sunday tee times because of rain in the forecast, and it cost them. Mickelson had to return Monday morning to claim a one-shot victory.

The last Monday finish in a major was just last year at the British Open because of heavy rain that flooded St. Andrews.

Kisner and Harrington showed a glimpse of what figured to be low scoring Saturday because of the soft conditions from two spells of rain earlier in the week. Play had to be stopped Friday morning for nearly an hour because of moderate rain that left the two fairways on the far end of the course filled with too much water.

"You keep it in the fairway, you can attack," Kisner said. "The course is receptive enough. You can make a lot of birdies."

Mickelson made the cut with one shot to spare on Friday, rallying from an opening tee shot that went out-of-bounds and onto a side street. He shot a 68 on Saturday and was at 1-under 209.

"There is a low 60s round," Mickelson said when he finished. "I think somebody is going to break that 63 record in these next two days. The greens are pristine. You can make a lot of putts. They are soft, so you can get the ball very close. I think that there's that 61 or 62 out there that I was probably trying to chase a little too hard."

Two weeks ago, Mickelson had a putt for 62 that rimmed out of the cup at Royal Troon in the opening round. Henrik Stenson closed with a 63, needing his best golf to hold off Mickelson.

And then Friday, Streb became the 28th player to post a 63 when he made a 20-foot birdie on his final hole at Baltusrol.

The course was so susceptible that Harrington didn't feel as though he played all that well and still played bogey-free for a 65.

"Hit the right shots at the right time and any of the shots that I didn't hit well didn't do me any harm," he said. "So it was one of those days. It's nice when you score better than you play. It was just an average day, as I said. Thursday was the day I played well. It was amazing, the best I played Thursday, is the worst score I shot. That's the nature of the game."

The nature of the game Saturday was to wait.

Jordan Spieth played one hole and narrowly missed a birdie putt. Rickie Fowler had 45 feet for birdie on the first hole.

That was as far as they got.

Now they face a marathon Sunday, with a reasonable chance they will not finish until Monday.