Big moves from golf's young guns were the story of Day 3 at the Deutsche Bank Championship on Sunday.
With the players enjoying favorable conditions under overcast skies, the leaderboard shifting continuously throughout the day.
By round's end, 25-year-old Russell Henley found himself in sole possession of the lead. His 65 moved him to 12 under par. After closing with three straight birdies, 27-year-old Billy Horschel sits one shot back in second.
Australia's Jason Day led or shared the lead for most of the round, but back-to-back bogeys on the 14th and 15th holes dropped him two shots back. Heading into Monday's final round, he shares third place with Rory McIlroy and Chris Kirk, who both surged up the leaderboard on the strength of bogey-free rounds of 64.
Not everyone's round went smoothly. Patrick Reed started the day two shots off the lead but will miss the secondary cut after shooting a disastrous 82. Phil Mickelson can prepare for another early tee time on Monday—his third-round 72 leaves him at two over par heading into the tournament's final day.
Defending FedEx Cup champion Henrik Stenson is languishing at even par. He's sitting in 69th place in the FedEx Cup standings, with the top 70 moving on to the next round of the playoff at the BMW Championship next week.