J.T. Poston captured the biggest title of his career at the Memorial tournament, defeating Ryan Gerard in a playoff after a roller-coaster final round. Poston built a four-shot lead Sunday morning but lost it after 12 holes, forcing him to make a clutch 7-foot birdie putt on the 18th to extend the tournament.

Gerard seized the moment with a spectacular 40-foot birdie putt on the 17th to take the lead, but missed a 6-foot par putt on the second playoff hole. Both players endured a grueling 33-hole day, completing 13 holes to finish the third round before the two playoff holes. Poston's victory marked a stunning turnaround after missing the cut in his previous 13 tournaments.

The win secured Poston the $4 million prize plus exemptions into the next three majors, including the Masters and British Open. Wyndham Clark finished solo third, one shot shy of the playoff, while Tommy Fleetwood and Sam Burns tied for fourth at 11-under. Scottie Scheffler and Rory McIlroy both tied for 12th, unable to mount serious challenges.

Two weather delays Saturday created the marathon Sunday finish. Poston's morning surge with three consecutive birdies gave him that early four-shot cushion, but his stumble down the stretch made the victory even sweeter. The handshake with host Jack Nicklaus capped a performance that transforms Poston's season outlook entirely.