Updated

The third round of the AT&T National will start at 1:00 p.m. (et) Saturday after a 6-hour delay caused by a massive overnight storm.

The third round was scheduled to begin at 7:10 a.m. Saturday in twosomes off the first tee, but now players will go off in threesomes off the first and 10th tees.

Leader Hunter Mahan will tee it up at 3:10 p.m. with Brendon de Jonge and Jimmy Walker.

Tournament host Tiger Woods will now go off at 2:40 p.m.

Winds of 70-80 mph winds hit Congressional Country Club Friday night. Trees and tents were down all over course and power has been knocked out on the property.

The PGA Tour announced that in the interest of safety, the course was closed to all fans and volunteers.

That means, when play begins, it will just be the players, caddies, players' families, tournament officials, security and media on the grounds at Congressional.