Jordan Spieth off to a flyer at Pebble Beach, but it's pre-tournament favourite Patrick Cantlay who takes an early lead with a stunning 10-under 62.
The PGA of America has announced that distance-measuring devices, such as lasers, will be permitted at the PGA Championship in an attempt to combat slow play.
PING Vice President of Fitting & Performance and PGA Tour player Marty Jertson showed how confusing calculating 'Plays Like' distances can really be.