South Korea's Bae Sang-Moon fired a seven-under par 65 to take a four-shot lead after three rounds of the US PGA Tour Frys.com Open.
Bae, seeking a second US PGA Tour title to go with his 2013 Byron Nelson Championship win, strung together five straight birdies from the second through sixth holes and bounced back from bogeys at the seventh and 13th with a strong finish.
He played the last four holes in four-under with a birdie at 15, an eagle at 17 and one last birdie at the par-five 18th on the Silverado Country Club North Course.
His 16-under par total of 200 gave him a four-shot lead over American rookie Zach Blair going into the final round of the first tournament of the US tour's 2014-15 season.
Blair had five birdies in his three-under 69 for 204.
Overnight leader Martin Laird of Scotland settled for a 71 that saw him tied for third on 205 with Americans Matt Kuchar, Brooks Koepka and Scott Langley.
Kuchar climbed up the leaderboard with a six-under 66, Koepka fired a 67 and Langley carded a 69.
South Africa's Retief Goosen carded a 66 to join a group on 206 that also included Japan's Hideki Matsuyama (69), Sweden's David Lingmerth (7) and American Hunter Mahan (68).
Source: AFP