He was one of only three players in the final 12 groups to shoot under par on a chaotic final day when Royal Birkdale finally showed its teeth.

The Masters champion holed a 20-footer on the second to get to three under, still seven behind leader Sam Burns.

Burns leads the way on 10 under par ahead of Sunday’s final round.

A bogey at the last cost Australian Herbert his place in history with a new mark.

He bogeyed the first after going over the back of the green and saw his six-shot lead cut.

Six birdies in his last seven holes saw the Irishman post a 65 and a 12-under-par total to lead the Masters by six.

Dunlap is the youngest amateur to win on the PGA Tour since 1910.