With the scoring being low, Lahiri looks set for a good finish with his two-day total of one-under 141.
Dustin Johnson is unfamiliar with the course at the Valspar Championship, having not played at Innisbrook for almost a decade since a missed cut in 2010. So why does it seem like he has to do the chasing on Sunday rather than enjoy his night atop the leaderboard?
Englishman 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.
Casey had ripped off three birdies in a four-hole stretch of the back nine and led by three shots with two holes to play in the third round. It was the centerpiece of a resurgence for Casey, a 41-year-old from England who is back among the top 15 in the world.
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Casey is bidding to become this event's first back-to-back victor. It's a spot Donald, with five career PGA Tour wins, once found himself in with regularity. "I would love to do that", Casey said. "Nice to turn it around after last week to suddenly be not in control of this event but I m near the top, which is good". "Now I've got one of those trophies". Teryn Schaefer presents the best social media posts from around the world of golf in "Good, Bad & Unusual" and after each day's play brings you the biggest talking points in "The Takeaway". If I go out tomorrow and beat him I actually might win. He is five shots behind the leader. "A 65 by somebody out of the pack just behind us would be problematic, but I can't control that". He shot 70 and was one behind, along with Scott Stallings (68) and Sungjae Im (67).
Casey started the day one clear of Johnson, although he faced some early attacks as Kokrak began with back-to-back birdies and both Oosthuizen and Donald eagled the opening hole. 'For whatever reason I struggled a little bit round Sawgrass and that frustrated me, annoyed me, (ahead of) coming in here trying to defend my title which I'd love to do because I've never defended a professional title. "Today it was a good day - I hit it well, and had a couple of loose shots, but around here you're going to hit a couple. We knew if we flushed it, it would go right in and it was flawless".
The gutsy effort, which nearly included a hole-in-one on the back of an albatross he made in the opening round on the Copperhead Course at Innisbrook Resort in Palm Harbor, came after he'd dug deep to make a late birdie in a second circuit that saw him drop seven shots in 10 holes to scrape into the weekend.
"I like this golf course", Kokrak said.