Robert Karlsson ... Just his second start in the United States in 2014. The European Tour member has picked off seven top 15s worldwide, including in each of his last three starts. Tied for 12th at The Open Championship. Ranks 11th on his circuit in putting and 18th in scoring average.
Brian Harman ... Making his PGA Championship debut. In the wake of his breakthrough victory at the John Deere Classic, the lefty held his own en route to a T26 in his first Open Championship. While he's T6 on TOUR in proximity to the hole, his primary strength is on and around greens. Currently 61st in strokes gained-putting and 44th in bogey avoidance, both contribute heavily to an adjusted scoring average that ranks 32nd.
Kevin Stadler ... In his third appearance in the PGA Championship, but still chasing his first cut made. He's 3-for-3 in the other majors this season. Comes off a share of 19th place at Firestone. Also a recent co-runner-up in Paris where he held the outright lead after each of the first three rounds. Sits 13th on the PGA TOUR in greens hit, T26 in proximity and T47 in adjusted scoring.
John Senden ... If only Valhalla would have fallen on the schedule a few months ago when he was tearing it up. No top 25s in his last five starts, but back-doored a T26 at Firestone where he opened with a 74. (He was the only golfer inside the top 44 that shot 74 or worse in the first round.) The 43-year-old Aussie ranks T27 in greens in regulation, 11th in strokes gained-putting, 27th in adjusted scoring and 13th bogey avoidance.
Paul Casey ... First start in the United States since the U.S. Open. Seven top 25s in his last 11 starts worldwide. Currently 72nd on the PGA TOUR in greens in regulation, fourth in proximity to the hole and 30th in adjusted scoring. Meanwhile, he's 10th on the European Tour in GIR and 34th in scoring.