Adam Scott sealed the WGC-Cadillac Championship title in Miami on Sunday after capitalising on Rory McIlroy's fall from a three-shot lead.

The Australian, who won the Honda Classic a week ago, won with a final-round 69, but he looked in trouble when he recorded two double bogeys and shanked a bunker shot.

The 35-year-old shot seven birdies and eventually finished 12-under-par for the tournament, one shot above Bubba Watson, who recorded a bogey, three birdies and an eagle.

As for McIlroy, the Northern Irishman led the way at the start of the round, but dropped down the field after recording just the one birdie and three bogeys.

The world number three finished the Championship tied-third, two shots behind Scott.