Sim, 24, won the BMW Charity Open on Sunday when he defeated Argentina's Fabian Gomez at the first sudden-death play-off hole in Greenville, South Carolina.

The West Australian went into the last round with a three shot lead and his two-under-par 69 was enough to match Gomez who had posted a 65 for a 22-under-264 total while playing in the group in front of Sim.

Sim added the title to the one he collected at the Stonebrae Classic last month and a third victory this season would earn him an immediate ``battlefield'' promotion to the US PGA Tour.

Having narrowly missed another victory when beaten in a play-off at his previous start at the Athens Regional Foundation Classic, Sim has now extended his lead on the money list to record levels.

The victory was worth $US126,000 ($A168,000) and pushed his season total to a $US367,417 ($A489,800) in just seven starts.

He leads the next best earner - Garth Mulroy - by $US211,136 ($A281,500).

Never before in the 20-year history of the secondary tour has the distance between the top two players been as great.

``I had a great off-season and I sat down with my coaches and set some goals for the year,'' Sim told PGATour.com.

``I hadn't really been doing that lately. My biggest goal was to try and win three times. I also wanted to finish No. 1 on the money list.''