Phil Mickelson was 6-under par through 16 holes and atop the leaderboard by three strokes when play was suspended by darkness on Sunday during the weather-delayed final round of the AT&T Pebble Beach Pro-Am at famed Pebble Beach Golf Links in Pebble Beach, Calif.

England’s Paul Casey, the third-round leader, is at 15 under through 15 holes and was tied for second place with American Scott Stallings when the round was suspended.

Play was suspended twice for a total of three hours and seven minutes, first for one hour before the round began and then for just more than two hours and with three groups yet to tee off, because of wet conditions created by rain and a hailstorm earlier in the morning that left the course unplayable.

Mickelson and Casey were the only players who didn’t finish after Americans Scott Piercy and Lucas Glover played the 18th hole in the pitch dark.

Mickelson is in the driver’s seat for his 44th PGA Tour win, and his first since last March at the 2018 WGC-Mexico Championship, a victory that ended a winless drought that dated back to 2013. He contended for the title two weeks ago at the Desert Classic in LaQuinta, Calif., but finished second.

Mickelson parred the 16th and lobbied hard with tour officials to finish on Sunday even though it was nearly dark. Casey marked his ball on the 16th hole and will have a putt for par when the round will be resumes on Monday at 11 a.m. EST (8 a.m. local time).

Mickelson has won this event four times, with the first in 1998 when the final round was postponed and played later in the season.

The last Monday finish at the AT&T Pebble Beach Pro-Am came in 2009 when Dustin Johnson was declared the winner in the weather-shortened, 54-hole event.

Casey owned the 54-hole lead at 15-under, three clear of Mickelson and four up on Piercy and Glover.

Mickelson gained two shots on Casey with three birdies on the front nine but also missed three short birdie putts that could have granted him the lead or put even more pressure on the Englishman.

The 48-year-old Mickelson moved into a tie atop the leaderboard with Casey with a birdie on the 10th hole, and Casey succumbed to the pressure, missing the green on both the 11th and 12th holes and bogeying them to fall two shots off the pace.

Mickelson added a birdie on the 13th to boost his lead over Casey to three strokes with five holes to play. Both players then birdied the par-5 14th to keep the margin at three.

Meanwhile, Stallings took the lead into the clubhouse at 15 under after a stirring 66 on Sunday that included one bogey and seven birdies, including one from 3 feet on the closing hole.

Si Woo Kim of South Korea, last year’s Players Championship winner, and Australia’s Jason Day finished at 13 under as each shot 68 in the final round and shared fourth place when the round was called.

--Field Level Media