Updated

San Martin, CA (SportsNetwork.com) - Brooks Koepka posted a 4-under 67 on Saturday and extended his lead to two strokes after three rounds of the Frys.com Open.

Koepka, who will go for his first PGA Tour title on Sunday, finished 54 holes at 15-under-par 198.

"I've just got to approach it the same way. We've got a good game plan and things seem to be going pretty well, so we'll stick to it and everything will take care of itself," Koepka said.

George McNeill matched the course record at CordeValle Golf Club with his 9- under 62 on Saturday. He moved into a share of second place at minus-13. He was joined there by Jason Kokrak, who carded a 68 on Saturday.

Jimmy Walker also fired a 62 in round three. He stands alongside Vijay Singh (65) and Robert Garrigus (68) in fourth place at 12-under 201.

Koepka, who won three times on the European Challenge Tour this year, flew out of the gate with three birdies in the first four holes. He birdied the first from 14 feet out and the second from 18 feet away.

At the fourth, he stuffed his approach to three feet and kicked that in for his third birdie. His tee shot at six found the left rough and he left his second in the rough. He chipped to 23 feet, but 2-putted for bogey to slip to 13-under.

Koepka parred six in a row from the seventh. He birdied the 13th from just inside six feet, but gave that shot right back at No. 14 after failing to reach the green from a fairway bunker.

The 23-year-old bounced right back with an up-and-down birdie from a greenside bunker at the 15th. Koepka 2-putted for birdie after driving the 17th green. He parred the last two lead by a pair.

"I'm a pretty chill person, so it's not too hard to be relaxed and let everything go," Koepka stated. "I played really well today."

McNeill ran off three birdies in a 4-hole span from the third. He birdied the ninth and 11th to move to 9-under. He faltered to a bogey at the 12th, but came right back with a birdie on the 13th.

The two-time PGA Tour winner closed with four consecutive birdies to end at minus-13.

"It was a lot of fun. Sixty-two, I don't know how it could ever not be fun," said McNeill. "I figured out something on the range last night and my swing was much more comfortable today. I felt free so I could go ahead and aim at some flags. I pulled it off and made some putts."

Kokrak, who was in the final group with Koepka, holed out for eagle on the first and rolled in a birdie effort at the second. He tripped to bogeys on the fifth and sixth, but got one shot back as he birdied the seventh.

After five pars in a row, Kokrak faltered to a bogey on No. 13. He atoned for that mistake with a birdie on the 15th, but tripped to another bogey at 16. Kokrak jumped into a tie for second as he closed with back-to-back birdies.

NOTES: Defending champion Jonas Blixt shot 2-under 69 to move into a share of 52nd at 3-under 210 ... Brad Fritsch withdrew from the tournament due to a bulging disc in his back ... Since 81 players made the cut, there was a secondary cut that trimmed nine players, including Geoff Ogilvy, Stewart Cink and Justin Leonard, from the field.