Harrington was using the Irish PGA to tune up for the Open
Padraig Harrington warmed up for the defence of his Open Championship title next week by winning the Irish PGA Championship by four shots on Saturday.
Holder Harrington's final round of 72 at the European Club left him four clear of Philip Walton who shot a 70.
The Open Champion was using the Irish event to gets links practice ahead of his Royal Birkdale challenge.
David Higgins finished third on seven over after a closing 70 while Eamonn Darcy shot a 72 for nine over.
Harrington led 1995 Ryder Cup hero Walton by six shots overnight and the Open Champion was never in any danger of being caught.
Dubliner Harrington also won last year's event a week prior to his Open victory at Carnoustie.
"It's been an excellent exercise and I couldn't have asked for a
better week in preparation," Harrington said.
"I don't think it puts me a shot ahead of anybody else but it
will certainly save me shots and make my golf better at Birkdale.
"I haven't won for seven or eight months now and it's always
nice to win. It is always better to get that winning feeling. It's a
nice habit to stick with."
Damien Mooney was the leading Ulster finisher in 12th place on 18 over par.