Honda Classic: Padraig Harrington beats Daniel Berger in play-off

Berger was beaten on the 74th hole of the tournament by resurgent Harrington

Three-time major winner Padraig Harrington thinks he has found the "mental edge" he has been missing after ending a seven-year wait for a title on either the PGA Tour or European Tour.

The 43-year-old Irishman beat American rookie Daniel Berger, 21, in a play-off to win the rain-delayed Honda Classic.

Harrington sealed victory on the second extra hole and qualifies for the Masters after missing out in 2014.

"Hopefully this isn't an isolated win," said the Dubliner.

Harrington had dropped from number two to 297 in the world

"I really do believe in myself. I think I've found that mental edge that I've been lacking the last number of years."

Berger posted a six-under 64 to tie with Harrington, who won the US PGA in 2008 and the Open in 2007 and 2008, on six under after a major thunderstorm on Saturday pushed the finish back to Monday morning.

Overnight leaders Ian Poulter and Paul Casey finished joint third on five under, alongside Scotsman Russell Knox. Poulter found the water five times as he shot a four-over 74.

The win lifts Harrington back up to 82nd in the world rankings after beginning the tournament 297th.

The former world number two trailed by four shots going into Monday but surged into contention with four consecutive birdies at 11, 12, 13 and 14.

He double bogeyed the 17th but sank a 15-foot birdie putt on 18 for a 70.