August 4, 2017; Akron, OH, USA; Jordan Spieth (right) shakes hands with Rory McIlroy (left) on the 18th hole after the second round of the WGC - Bridgestone Invitational golf tournament at Firestone Country Club - South Course. Mandatory Credit: Kyle Terada-USA TODAY Sports
Rory McIlroy, left, and Jordan Spieth, right, are two of the leading contenders to win the US PGA Championship. Kyle Terada / USA Today Sports

Spieth right to see McIlroy as the man to beat at the US PGA Championship