Billy Horschel earned his fourth-career PGA Tour victory Sunday when he outlasted Jason Day in a one-hole playoff at the AT&T Byron Nelson.

Horschel shot a final-round 1-under 69 in tough conditions to finish the tournament at 12 under. Day shot a 2-under 68 to join him atop the leaderboard, but he bogeyed the par-4 18th during the sudden-death playoff.

The win couldn't have come at a better time for Horschel, who came under some fire last week at the Players Championship when he appeared to toss his putter at his caddie. Horschel apologized for his heated moment, but he is racking up questionable decisions on Tour.

Day was seeking his first win since last year's Players Championship. The former world No. 1 had been dealing with back and personal issues this season, which had led to just one top 10 worldwide since last year's FedEx Cup playoffs opener.

Despite the loss, it appears Day has finally regained his confidence and form. He should be a dangerous player this summer as major championship season approaches.

James Hahn finished solo third at 11 under after bogeying three straight holes on the back nine (12-14). He bounced back by hitting a tremendous approach shot on the par-4 18th, which led to a birdie. But he still shot a final-round 1-over 71 to miss the playoff by one shot.

Dustin Johnson was firmly in contention after 36 holes this week, but he got caught in quicksand (71-69) over the weekend to finish tied for 13th at 6 under.

Horschel, who won the FedEx Cup playoffs in 2014, will now be in great shape to contend for the grand prize again this fall.