The Swede was rarely challenged Sunday, finishing at 14-under-par 270 to claim his fifth PGA Tour championship.
Luke Donald, meanwhile, lost his world No. 1 ranking after closing with an even-par 71 to finish in a 37th-place tie. He needed to finish in the top eight to retain the No. 1 spot.
His performance means Rory McIlroy will become world No. 1 even though he took the week off.
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