After the illegal driver debate at the PGA Championship, Xander Schauffele explained, using a baseball analogy, that it was ...

USGA driver testing has been a big topic this week, and Xander Schauffele threw more fuel on the fire on Sunday ...

Why was Rory McIlroy's driver non-conforming, what is the process for testing on tour and what does it all mean? Let's ...

Rory McIlroy and Scottie Scheffler's drivers failed conformance tests at the PGA Championship. Could YOU be using an illegal ...

Mike Whan, executive director of the USGA, is not sure that golfers can manipulate the system, confirming that they keep a ...

Rory McIlroy and Scottie Scheffler's drivers were deemed "nonconforming" during a standard test earlier this week at Quail ...

According to a report, the Masters champion had his regular driver deemed non-conforming Tuesday and had to put a backup in ...

"I think, if we're going to do it, we might as well do it right, get more robust and get even more strict,” Scheffler said.

McIlroy's driver is believed to have been deemed non-conforming Tuesday. When reached for comment, the USGA confirmed testing ...

Rory McIlroy, off to a slow start in the PGA Championship at Quail Hollow Club in Charlotte, reportedly is using a different ...

The PGA of America says Rory McIlroy was part of some 50 players who had drivers tested before the PGA Championship.

Rory McIlroy's driver was reportedly deemed "nonconforming" during a standard test earlier this week at Quail Hollow.