Jakarta, Dec 7 (IANS): Indian golfer Jyoti Randhawa produced a brilliant fourth and final round to finish tied seventh while compatriot Anirban Lahiri had a difficult outing and had to be content with a tied 15th place at the $750,000 BANK BRI Indonesia Open here Sunday.

David Lipsky of the US extended his Order of Merit lead by slightly over $133,518 after finishing sixth while Merit runner-up Lahiri stumbled to tied 15th place after closing with a triple bogey.

Lahiri, who made an extremely poor start with three-over par 74 but recovered well two top rounds, once again faltered in the fourth with a one-over par 72 ruining his chances.

"I had a poor start and finish. Everything in between was quite good. I got off to a poor start on day one and fought back pretty well. It is disappointing and upset to finish the way I did but I have to accept what has happened," said Lahiri.

"Looks like I increased my lead and I'm feeling pretty good about that. The goal was to play solid here. Step one done and now I'll move on to the Thailand Golf Championship and see what I can do there," said Lipsky, who won the Omega European Masters in Switzerland in September.

Lahiri, though, will have much to play for in the remaining two Asian Tour events.

"I got a lot to play for. David has a good lead and I need two solid results in the last two events. I think I'm playing well enough but I got to put it together over four rounds. I haven't done that in these last two weeks."

Irishman Padraig Harrington secured a thrilling victory after defeating a battling Thanyakon Khrongpha of Thailand by two shots on the final day.