Si-Woo Kim takes the lead at the American Express, one shot ahead of Scottie Scheffler and teenager Blades Brown. With a score of 22 under par, Kim is in prime position to win the tournament for the second time. His round included seven birdies and a bogey, a performance he described as simply enjoying the round without focusing on winning. American Scheffler and 18-year-old Brown, both making their first PGA Tour appearances this season, are close behind with a score of 21 under par. Scheffler, the world number one, hit six birdies and two bogeys, while Brown, who would become the second-youngest PGA Tour event winner, carded five birdies and a bogey. The unusual format of playing across three different courses over the first three rounds adds an interesting dynamic to the competition. Kim's third round was on the La Quinta Country Club course, while Scheffler and Brown were on the Pete Dye stadium course. Brown's performance was particularly notable, with three birdies on the final three holes, including a 44-footer on the 18th, which he described as 'a lot of fun' and a great adrenaline boost. With another 18 holes to go, the tournament is far from over, and the competition is heating up.