PGA Championship 2018 preview: Justin Thomas ready to defend title after win at Firestone The PGA Championship celebrates its 100th birthday this week, as the seasons final major looks to unearth the next budding star. Bellerive Country Club, a 7,317-yard par 70 hosts its third major championship. Defending Champion Thomas shot a 3-under 68 in the final round last year to survive a crowded leaderboard and hoist the Wanamaker Trophy. Dustin Johnson, ranked No.1 in the world, won the Canadian Open two weeks ago and followed it up with a t-3 last week at the WGC-Bridgestone Invitational. Sleepers Kyle Stanley finished runner-up last week, despite some shocking putting form.