Phil Mickelson US Open 2013
Phil Mickelson has finished second at the U.S. Open five times, having never won. Reuters

Phil Mickelson has the chance to give himself a tremendous birthday and Father’s Day gift.

Celebrating his 43rd birthday, Mickelson will shoot for the his first U.S. Open title in the final round Sunday at Merion GC in Ardmore, Pa.

Mickelson has not let the weather affect his play too much, unlike the rest of the field. He finished his third round Saturday with an even-par 70 and kept his lead as the only player under par. He began his back nine with two straight birdies, but then ended his third round with a birdie on the par-3 17th and a bogey on the 18th.

Mickelson has finished second at the U.S. Open five times, the most recent being 2009.

Weather could still be a significant factor for Mickelson, considering he won’t tee off until 3:20 p.m. Eastern with Hunter Mahan. Scattered rain showers are expected later in the afternoon, which could force the final round to spill into Monday.

Mahan, South Africa’s Charl Schwartzel, and Steve Stricker are all locked into a three-way tie for second at even par through 54 holes. Schwartzel and Stricker will tee-off at 3:09 p.m.

Slipping way down to a tie for 31st place, Tiger Woods started the third round with a birdie, but his seven bogeys accounted for a 6-over 76. He’s now shot 9-over 219.

Rory McIlroy is just ahead of Woods with an 8-over 218, shooting six bogeys in the third round.

Woods begins the final round at 12:02 p.m. and McIlroy’s at 12:57 p.m. A full list of tee-times can be viewed at the US Open official site here.

NBC will provide live coverage beginning at noon, and their live online stream can be viewed at NBC Live Extra here.