Xander Schauffele won his second major in three months in the 152nd Open at Royal Troon to complete an American clean sweep of the game’s biggest titles.
Schauffele carded a flawless closing 65 to finish nine under par, two shots clear of overnight leader Billy Horschel and Justin Rose, who had threatened to become the first English winner of the Claret Jug since 1992.
South Africa’s Thriston Lawrence, who held the lead after 11 holes of the final round, finished a shot further back in fourth following a 68.
Schauffele, who registered a major record of 21 under par to win the US PGA at Valhalla in May, is the first player to win two majors in a year since Brooks Koepka in 2018.
Afterwards as he held the Claret Jug, Schauffele said: "Oh man. Hearing your name called with 'Open champion' after it is something I've dreamt of for a very long time."
The world No 3 is the seventh American winner in the last eight Opens at Royal Troon – Sweden’s Henrik Stenson having denied Phil Mickelson in a thrilling duel in 2016 – and will head to Paris to defend his Olympic title in brilliant form.
Schauffele said he got some motivation from watching Stenson's win over Mickelson in the build-up.
"I actually watched the highlights of Phil and Henrik to motivate myself for this week and I guess that paid off pretty nice."
Schauffele, who has now finished no worse than 18th in his last 10 starts, was eighth in the Masters and seventh in the US Open either side of his US PGA triumph, where he birdied the 72nd hole to edge out Bryson DeChambeau by a shot.
Rose was bidding to become the first qualifier to lift the Claret Jug since Paul Lawrie in 1999, while the 4,053-day gap since his 2013 US Open victory at Merion would have set a new record.
The prospects looked good when Rose birdied the second and fourth to overhaul Horschel and again when he birdied the eighth, only for a bogey on the 12th to halt his momentum at just the wrong time.
Rose said: "When I walked off the course it hit me. The dream's been alive all week and I felt that I did an awesome job of coming out and really getting amongst it from the word go.
"I got off to a strong start and felt like I played my way into the tournament. I saw glimpses of my name at the top of the leaderboard at times, did some of the hard work on the back nine but Xander got that momentum.
"He's an ice cold competitor and one of the best players in the world and it was tough to keep up.
"This will be a tough one but a great one. I played in some of the hardest weather all week. I played some of the best golf but it didn't quite add up to the trophy."
Playing alongside Horschel, Lawrence was reaping the rewards for an aggressive approach as birdies on the third, fourth, seventh and ninth gave him the lead before Schauffele, who had covered the front nine in 34, produced a decisive burst.
A stunning approach to the 11th left Schauffele with a tap-in for the only birdie all day on the daunting par four, another on the 13th took him into a share of the lead and Lawrence’s bogey on the 12th handed Schauffele an advantage he would never relinquish.
Further birdies on the 14th and 16th gave Schauffele the luxury of a three-shot lead and he completed a nerveless display with pars on the final two holes before Rose birdied the 18th to round off a superb 67.
Horschel birdied the 16th, 17th and 18th to join Rose in second, with Lawrence another shot back after saving par on the last despite hitting his second shot into the face of a bunker and watching it fly back over his head on to the fairway.
Ireland’s Shane Lowry, who held a two-shot lead at the halfway stage before struggling to a 77 on Saturday, shot 68 in the final round to finish sixth, with Jon Rahm, Sungjae Im and Scottie Scheffler three strokes further back in seventh.
Masters champion and world No 1 Scheffler had been within two of the lead until amazingly four-putting the ninth for a double bogey.
