Brooks Koepka didn't allow his first two bogeys of the PGA Championship to slow him down in his second round Friday, and fired a 5-under-par 65 at Bethpage Black to extend his lead to seven strokes with a 36-hole record of 12-under 128.
Koepka, the defending champion, not only broke the PGA record for lowest score, 130 by Gary Woodland last year at Bellerive, but it was the lowest two-day total in any major championship.
While Koepka was running away from the field after two days, Masters champion Tiger Woods saw his championship come to an early end, struggling to a 73 and a 145 total. He missed the cut by one stroke and ended his run at a 16th major title.
Koepka hit 15 greens in regulation and carded seven birdies, with three coming on the final four holes, including an 11-foot putt that ended his round with 3 at the par-4 18th.
He made his first bogey of the week at the 10th hole when he hit his second shot in a greenside bunker and missed a 20-foot par putt. He also 3-putted the 17th, leaving himself a 7-foot second putt that came up short for par.
Jordan Spieth, seeking a victory here to complete golf's Grand Slam, vaulted into contention with a 65 that put him into a tie for second at 135 with Adam Scott. Scott flirted with a record score of 62 but 3-putted the 17th and settled for a 64.
Spieth will play in Saturday's final pairing with Koepka.