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

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

Rory McIlroy’s regular driver was tested and deemed to be nonconforming after ... and he had to scramble for a replacement at ...

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

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

USGA CEO Mike Whan defended the recent driver testing that reportedly ensnared two of the game’s biggest stars at the PGA ...

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

"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.

Rory McIlroy's PGA Championship performance overshadowed by driver controversy. USGA's non-conforming ruling led to equipment ...

It didn’t really register in my head because I know, one, it’s, like, we hit our drivers a lot, so, like, they creep and then ...

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

Rory McIlroy did not speak with the media at the PGA Championship, as news surfaced that his driver had been flagged by the ...