
Rory McIlroy battled illness and a poor start to remain in contention for a third US PGA Championship title as Bryson DeChambeau set the clubhouse target at Oak Hill.
On a course which has drawn comparisons to Winged Foot, the venue for his US Open triumph in 2020, a slimmed-down DeChambeau still possessed enough power to post six birdies and two bogeys in an opening 66.