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Northern Trust Open - Final Round

PACIFIC PALISADES, CA - FEBRUARY 19: Luke Donlad of England his a driver on the second hole during the fourth round of the Northern Trust Open at the Riviera Country Club on February 19, 2012 in Pacific Palisades, California. (Photo by Harry How/Getty Images)

Haas clinches Riviera win in sudden-death playoff

Bill Haas clinched his fourth PGA Tour title by beating fellow Americans Phil Mickelson and Keegan Bradley in a gripping sudden-death playoff for the Northern Trust Open Sunday.