Xander Schauffele's 9-under start makes PGA Championship history

Xander Schauffele is off to a scorching hot PGA Championship start at Valhalla Golf Club, as his opening Thursday round rewrote the record books.

Schauffele went into the clubhouse not only leading the pack at 9-under par following his first round, but his 62 is now the lowest round ever recorded at a PGA Championship. 

There have been 17 other golfers who shot 63 in PGA Championship rounds, including Jose Maria Olazabal's third-round performance at the 2000 tournament, which fittingly...