PARAMUS, N.J. — Brooks Koepka showed some muscle and unleashed a monstrous finish Friday to share the lead in The Northern Trust.

Tiger Woods missed yet another putt and was relieved to still be playing.

Koepka spent most of the second round trading birdies and bogeys, going nowhere. One swing changed everything on the 631-yard 13th hole at Ridgewood Country Club. From just under 310 yards, he swung 3-wood as hard as he could and saw the tight draw that had been missing all day. It stopped 20 feet from the hole, Koepka made it for eagle and then closed with three straight birdies for a 6-under 65.

He tied Jamie Lovemark, who shot a 66.

“I wasn’t happy the first 11 holes the way I hit it,” Koepka said. “When I hit that 3-wood, it all clicked. I felt like I was finally able to release the golf club. Just tried to hit as hard as I could, big draw. Aimed at the tree on the right and tried to draw it back to the flag. When I did that, everything started to click.”

The U.S. Open and PGA champion took it from there.

Lovemark, winless in 135 starts as a pro, made five birdies in a six-hole stretch around the turn and was the first to reach 10-under 132.

Before long, a list of contenders lined up behind them in an entertaining start to the FedEx Cup playoffs.

Bryson DeChambeau had a 66 and joined Johnson at 134.