Carl Pettersson carded a two-under 69 on Sunday and cruised to a five-stroke victory at the Heritage.

Pettersson finished his fifth PGA Tour title at 14-under-par 270.

The Swede's lead was briefly down to three with three holes to go, but no one could mount a charge.

Zach Johnson finished alone in second place at minus-nine after a closing 70.

Colt Knost struggled to a three-over 74 to slide into third place at eight- under-par 276.

For the second straight year, Luke Donald leaves Harbour Town as the second- ranked player in the world. He closed with an even-par 71 to finish in a tie for 37th.

Donald needed a top-eight finish to retain his top-ranking. When the new rankings come out on Monday, Rory McIlroy will be world No. 1 despite not playing this week. Last year, Donald lost a playoff to Brandt Snedeker and was denied the No. 1 spot.