Atlanta: Defending champion Martin Kaymer of Germany tees off Thursday at the 93rd PGA Championship trying to match Tiger Woods as the only back-to-back champion in the event since 1937.
Kaymer claimed last year's title on a British Open-style course in Whistling Straits, but faces the challenge of repeating on the long layout, dense rough and sweltering heat of Atlanta Athletic Club.
"It's a big week for me to defend my first major," Kaymer said. "It will be interesting. It's a very difficult course, very long and very tight."