Patrick Cantlay defends BMW Championship title after hard-fought final round

Patrick Cantlay reacts after missing a putt on the 18th hole during the final round of the BMW Championship (Julio Cortez/AP)

Patrick Cantlay made a successful defence of his BMW Championship title after a hard-fought final round in Delaware.

Cantlay birdied the 17th after his drive bounced over a fairway bunker and although he did find sand on the 18th, the world number four safely reached the green and lipped out from long range for another birdie.