Jhonattan Vegas had the top spot after a 7-under 64. They are closely followed by Stephan Jaeger, Luke Donald and Alex Smalley. Meanwhile, established players like Rory McIlroy, Justin Thomas, and Scottie Scheffler are facing a tougher challenge.

Sidelined for lengthy stretches a couple of times by serious golf injuries, Vegas owns the almost unbelievable distinction of being a four-time winner who has only qualified for 17 majors in 14 years. Compare that to another 40-year-old, Gary Woodland, also a four-time winner (and U.S. Open champion), who has 52 major starts.

The PGA Championship tournament continues on Friday at Quail Hollow. Scottie Scheffler and Rory McIlroy join golf's brightest. Follow the latest scores, updates and highlights.