A look at some of the anniversaries this year at the PGA Championship: 100 years ago (1925) Site: Olympia Fields Winner: Walter Hagen Runner-up: Bill Mehlhorn Score: 6 and 5 Winner’s share: $1,000 Noteworthy: This was the second of six straight years that Hagen won a major.

A four-time winner of the Wanamaker Trophy, Tiger Woods recently had surgery and will miss playing at Quail Hollow after an Achilles injury in March.

Each major uses a different format to determine a playoff winner. This is what the men's PGA Championship employs.