Overview

• Scottie Scheffler confirmed his driver failed USGA conformity testing before the PGA Championship, prompting him to switch to a backup driver he used to secure the title.
• Rory McIlroy also had to replace his driver after it was deemed nonconforming, but he has not commented publicly, marking an unusual silence from the golfer.
• The USGA routinely tests drivers for compliance with spring-like effect standards, with results kept confidential unless disclosed by players themselves.
• Scheffler and other players, including Xander Schauffele, have called for testing to be expanded to all competitors to ensure fairness and protect competitive integrity.
• The PGA of America requested the USGA conduct the tests at Quail Hollow, where wear and tear on clubfaces reportedly caused previously compliant drivers to fail.