Jhonattan Vegas showcased remarkable skill with a 7-under 64, leading the PGA Championship after day one. This surprising round left him two shots ahead, setting a unique leaderboard as none of the top 10 golfers featured prominently. Rory McIlroy, who won the Masters recently, struggled with a 3-over 74, and Scottie Scheffler managed a 69, but the day was challenging for many big names. Conditions on the course contributed to difficulties, particularly with mud on balls affecting play. Vegas expressed excitement over his performance, noting it as a long-sought dream to lead in a major.