U.S. 's Martin Kaymer claims 92nd PGA Championship at Whistling Straits . Kaymer beats American Bubba Watson in two -hole playoff in final major of last day . Dustin Johnson penalized two shots on final hole to miss out on playoff . Tiger Woods finishes tied 12th so Tiger Woods still world number one .
Germany 's Martin Kaymer claims 92nd PGA Championship at Whistling Straits . Kaymer beats American Bubba Watson in three-hole playoff in final major of season . Dustin Johnson penalized two shots on final hole to miss out on playoff . Phil Mickelson finishes tied 12th so Tiger Woods still world number one .