Defending champion Paul Casey and American Austin Cook will go into the third round of the Valspar Championship in Florida one shot ahead of the chasing pack after the early starters reached the halfway stage six-under par on Friday.
Casey shot 66, one better that Cook, in the second round at Palm Harbor before the Florida breezes kicked up and the greens became trickier.
Luke Donald (70) had threatened to finish the day as the leader, moving ahead by one with four holes to play, but two bogeys coming home left him in a three-way tie for third alongside Scott Stallings (68) and Im Sung-jae (67)
Another shot back was world number one Dustin Johnson with a second consecutive 69 leaving him in a three-way tie for sixth with Australian Curtis Luck (68) and first-round co-leader Joel Dahmen (72).
Casey put together an eagle and four birdies before a bogey at his last hole, the ninth, saw him finish on a sour note.
"I’ve never (successfully) defended a professional event," he told Golf Channel. "I think mentally last year I was sort of hoping, obviously hoping, I would win, wanting to win. This year, knowing that I have won around here, I have just a slightly different approach to it.”
Cook has turned to a new putter and liked the results as he recorded five birdies and a bogey.
"Something as simple as changing a putter can make a big difference sometimes," he told PGA Tour Radio.
Donald, playing in only his second tournament of the season after back trouble in 2018, overtook Casey and Cook with a 33-foot birdie from a green-side bunker at the fifth, his 14th hole. But a bogey at the very next hole and another at his final hole saw him drop out of the lead.
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