The 108th PGA Championship is heating up at Aronimink, and all eyes are on world No. 1 Scottie Scheffler as he aims to seize control in Round 2. For the first time in his major championship career, Scheffler sits atop the leaderboard after the opening round—a position that could spell trouble for the rest of the field. Without the pressure of playing from behind, the question is: can anyone catch him? Just a month ago at the Masters, Scheffler mounted a stunning comeback from double-digits to nearly force a playoff, proving his resilience when it matters most.

On the flip side, Rory McIlroy—fresh off his Masters victory—had a day to forget on Thursday, carding a 4-over 74 that he bluntly described as "s—t." The reigning champion now faces an uphill battle just to make the cut, needing a strong turnaround in Round 2 to keep his weekend hopes alive. Meanwhile, Bryson DeChambeau also finds himself in a precarious spot, starting two shots back of McIlroy and needing to find his rhythm quickly.

While Saturday is traditionally known as "moving day" in golf, today at Aronimink carries that same sense of urgency. Scheffler has the chance to run away with the tournament, while the two other biggest names in the sport are fighting just to survive until the weekend. As Round 2 gets underway, here's a look at the top of the leaderboard and what to watch for in this thrilling chase for the Wanamaker Trophy.