Leaderboard: Davis (-6), Ricky Barnes (-5), Sean O'Hair (-5), Justin Thomas (-4), Henrik Stenson (-4), Derek Ernst (-4), Brendon de Jonge (-4), Nicholas Thompson (-4), Alex Cejka (-4)
What it means: Five times a runner-up, the veteran Davis remains in search of his first Tour victory. He is perhaps best known for calling a penalty on himself during a playoff at the 2010 RBC Heritage that cost him the tournament. Without a top-10 in the intervening seasons, Davis is off to a slow start in 2014-15. A T-6 and T-24 in back-to-back weeks at the Sony and Humana are otherwise grouped with five missed cuts, a WD and four other finishes no better than than T-59 in 12 starts. His 65 ties his lowest round on Tour this season.
Round of the day: Starting on the back nine, Davis got out in 5-under 30 before going as low as 7 under through 15 holes. He looked as if he would forfeit his solo lead with bogeys on Nos. 7 and 8 before a chip-in at the ninth, his final hole of the day, ended the round on a high note.
Best of the rest: O'Hair, the 2008 champ at Innisbrook, posted the best round on the morning wave, with a 5-under 66. After he started on and played the back 3 under, O'Hair's front-nine scorecard featured plenty of color, with five birdies, two bogeys and just two pars. Barnes, meanwhile, looked as if he was going to join Davis at 6 under before a bogey at 17, his only dropped shot of the day.
Biggest disappointment: After causing a stir over what he called the PGA Tour's "joke" of a drug testing policy, John Daly opened with a 10-over 81 in Round 1. He was the only player in the 144-player field not to beak 80.
Shot of the day: De Jonge used this 126-yard hole-out for eagle on the par-5 14th to post an opening 66 and position himself two shots back of the lead.
Biggest storyline going into Friday: Stenson is playing just his second Tour event of 2015 and looking for his first win on American soil since his triumph at the 2013 Tour Championship. His last two starts in the U.S. - a solo second at the Hero World Challenge and a T-4 at the WGC-Cadillac - suggest he's getting close.