Harrington makes his move in Singapore

Padraig Harrington fired a five-under par 66 to storm into the clubhouse lead in the Barclays Singapore Open. Live scoring

The three-time Major winner had six birdies in a sensational third round effort, coming home in 31 to set the 54-hole target at four-under par.

Thailand's Chapchai Nirat holed a pitching wedge from 118 yards for an eagle at the par-four 11th to move to the top of the leaderboard on nine under par  and then parred the 12th before darkness brought the third round to an end.

The Bangkok native, 25, finished the day two shots clear of Thomas Bjorn, Simon Dyson and Lam Chih Bing, who must all return to Sentosa to complete their third rounds on Sunday morning.

Harrington was joined on five under par by world number three Phil Mickelson (four under through 14), Ernie Els (one over through 11), Rory McIlroy (one under through 11) and Jeev Milkha Singh (four under through 14).