Sports Jordan Spieth wins U.S. Open after Dustin Johnson three-putts 18th Jordan Spieth kisses the trophy after winning the 115th U.S. Open Championship at Chambers Bay on June 21, 2015 in University Place, Wash. Photo Credit: Getty Images / Ross Kinnaird By GREG LOGAN firstname.lastname@example.org @GregLogan1 June 21, 2015 11:15 PM Print Share fbShare Tweet Email UNIVERSITY PLACE, Wash. - For much of the U.S. Open, Jordan Spieth said he "didn't have my best stuff," but in the final round when several major champions charged out of the pack on a Chambers Bay course that was set up to produce fireworks, it was Spieth who had the right stuff. Spieth took what seemed to be a commanding three-stroke lead with two holes to play, then double-bogeyed the 17th to fall into a three-way tie at 4-under with Dustin Johnson and Louis Oosthuizen, who was the leader in the clubhouse. On the 18th, which had been a thorn in Speith's side all week, he produced a birdie to reach 5-under and then sat back to sweat it out as Johnson sized up a 12-foot eagle putt for the victory. Johnson was in position to win the 2010 U.S. Open at Pebble Beach before a final round 82, and he missed out on a playoff at the PGA that same year with a two-stroke penalty at the 72nd hole that cost him the win. Johnson insisted he was past all that, but his eagle putt went four feet past, and he missed the comeback on the low side to hand the trophy to Spieth, whose 69 for a total of 275 was his seventh subpar round out of eight in the majors this year. The 21-year-old Masters champion became the sixth player to win the first two legs of the Grand Slam. The precocious Texan now can head to St. Andrews for the British Open as a member of an honor roll that includes Tiger Woods, Jack Nicklaus, Arnold Palmer, Ben Hogan (who did it twice) and Craig Wood. Spieth also became the youngest U.S. Open champion since all-time great Bob Jones in 1923, and he's the youngest to win two majors since Gene Sarazen in 1922. Now, Grand Slam pressure will begin to mount. "To go to the home of golf for the next tournament is my sole focus," Speith said. "You can't win them all unless you win the first two. I'll go looking for the claret jug, and I think I can do it if I get the right prep." It seemed the pivotal hole would be the drivable par 16th, which played only 337 yards. Spieth and Branden Grace came to that hole tied for the lead at 5-under, two strokes ahead of Adam Scott, who was in the clubhouse at 3-under after shooting a 64 that was the best round of the tournament. Oosthuizen also was in the group at 3-under after five straight birdies from No. 12 through No. 16, and Johnson fell from the lead to 3-under with three bogeys on the first four holes of the back nine. Grace drove out of bounds right on the 16th and wound up with a double bogey that dropped him into the group at 3-under. Speith drove into a patch of rough on 16, and his chip came out 27 feet from the cup, a distance on the bumpy greens at Chambers Bay that most players considered a hit-and-hope shot. Speith deftly struck the left-to-right putt, and it caught the lip and tumbled in to give him a sudden three-stroke lead. The finish was one of the wildest ever in major championship golf. Oosthuizen, who began the tournament 12 strokes out of the lead after a first-round 77, made a birdie at the 18th for a U.S. Open record-tying 29 on the back nine and a 67 that left him 4-under. When Speith missed the par 3 17th into the right rough, pitched on and then three-putted for double bogey, it left him tied with Oosthuizen. Moments later, it became a three-way tie when Johnson birdied the 17th. Spieth produced a massive roar from the crowd at the 18th with a 3-wood second shot that finished 15 feet from the hole. He missed and tapped in for birdie, knocking out Oosthuizen but leaving the door ajar for Johnson, who balked. By GREG LOGAN email@example.com @GregLogan1 Greg Logan has worked for Newsday since 1982 covering a wide array of sports and events, currently including the Brooklyn Nets beat. Share on Facebook Share on Twitter Comments We're revamping our Comments section. Learn more and share your input.