CROMWELL, Conn. -- Daniel Berger shot an 8-under par 62 on Saturday to take a three-stroke lead into the final round of the Travelers Championship.

The 23-year-old Floridian made nine birdies, including seven on his final 10 holes, to finish at 15-under 195 after 54 holes.

Last year's PGA TOUR Rookie of the Year had just one bogey and was two strokes off the course record, following up rounds of 66 and 67 that had him tied for the lead coming into the day.

"I've shot better than 62, but I guess it doesn't matter unless it's on the PGA TOUR," he said. "It was just a great day."

Russell Knox shot a 64 and Russell Henley and Tyrone Van Aswegen each shot 65, to tie for second place at 12-under par. Patrick Rodgers shot a 66 and was five strokes off the pace.

Berger, who is coming off a shoulder injury, is looking for his second career title on the PGA TOUR. He won two months ago in Memphis at the St. Jude Classic, which was his fourth top-10 finish in seven starts after a slow start to the year.

"Everyone was starting to say sophomore slump and that kind of got me upset a little bit," he said. "Not upset, but kind of like, `Come on, let's get going here.'"

Berger said he first tweaked his left shoulder in Memphis, then strained it at the U.S. Open. The injury forced him to withdraw after hitting his opening tee shot at the WGC-Bridgestone Invitational, and he didn't return until last week at the PGA Championship.

The golfers went out early in groups of three on Saturday off the first and 10th tees to avoid thunderstorms predicted for the area in the afternoon hours.

Knox set the pace, opening his round with three consecutive birdies. He putted the ball just seven times over his first six holes.

He also is looking for his second PGA TOUR win, after a victory last November at the World Championships in Shanghai.

"I always tell myself, don't be scared to play well," he said. "You've got to go for it."

Berger is not the only player coming off an injury.

Brooks Koepka, playing with a brace on his right ankle, shot a 30 on his back nine to finish with a 64 and go 9-under par for the tournament, tied for sixth place with Paul Casey.

Koepka tore a ligament earlier this summer and, like Berger, missed he British Open. He said he decided to play the tournament rather than rest in an attempt to secure enough points to ensure his spot on the Ryder Cup team.

"The better you play the better you feel," he said. "Today is the best it's felt in a long time."

Koepka spent the day sparring with playing partner Daniel Summerhays, who also had four birdies on the back nine, before hitting a tree on his drive at the par-4 18th. He ended up saving a bogey with a 44-foot uphill putt and goes into Sunday at 8-under par, tied for eighth place.

"To see that go in, that was definitely a sigh of relief," he said. "A good putt can forgive a lot of weaknesses and sins that you've committed in one hole."

U.S. Olympians Bubba Watson and Patrick Reed each shot 68 and are 5-under par, 10 strokes back. Fellow Olympian Matt Kuchar shot a 71 and is at 3-under par.

Watson has insisted his focus this week is on Connecticut, but acknowledged that he wore his opening ceremony outfit on Friday night, texting a photo to teammate Rickie Fowler, who took part in the parade of athletes at Friday night's Opening Ceremony for the Olympic Games in Rio.

"He texted me back his outfit," Watson said. "I said I was there in spirit, so I had to wear my outfit, too."

The shot of the day came from Ernie Els, who aced the par-3 16th hole from 176 yards. It was the 13th hole-in-one of his career.