•  A rules official waits on a rain-soaked ninth green - a downpour provoked a lengthy delay
  • Colin Montgomerie hits his tee shot on the ninth hole during the final round
  • Francesco Molinari of Italy talks with caddie Jason Hempleman before hitting his tee shot on the sixth
  • Vijay Singh of Fiji watches his tee shot on the second hole
  • Members of the grounds crew squeegee the first fairway during a weather-delayed final round
  • Fans walk in the rain near the practice range
  • Ernie Els of South Africa hits his tee shot on the fifth hole
  • Sergio Garcia has been playing impressively in recent weeks
  • Rory McIlroy of Northern Ireland took a one-shot lead into the final round
  • Adam Scott of Australia hits his tee shot on the fourth hole
  • Rickie Fowler of the United States walks off the practice ground
  • Rickie Fowler shakes hands with his coach Butch Harmon on the practice range
  • Phil Mickelson hits his tee shot on the first hole
  • Rickie Fowler reacts on the fifth tee as caddie Joseph Skovron looks on
  • Henrik Stenson of Sweden hits his tee shot on the eighth hole
  • Mikko Ilonen of Finland looks on from the eighth hole
  • Rory McIlroy reacts to holing a putt for birdie on the 13th green

US PGA: Day Four

A rules official waits on a rain-soaked ninth green - a downpour provoked a lengthy delay