Harrington won't rest on laurels

Padraig Harrington moved closer to golf’s ‘big five’ after his first victory on American soil but accepted he will have to continue winning if he is to break into an elite club.

Success at the second hole of a play-off – when world number two Vijay Singh inexplicably missed a two-foot putt – in the Honda Classic at Mirasol saw Harrington become the first Irishman to win on the PGA Tour.