Padraig Harrington called Shane Lowry a 'lightweight' after he was unable to reach the Offaly man at 3.30am following their respective wins over the weekend.
Lowry won the BMW PGA Championship at Wentworth on Sunday hours before Harrington claimed his third victory of the year on the PGA Tour Champions in St Louis.
But the latter was unable to get a hold of the former when he tried to contact him at 3.30am Irish time on Monday morning.