Greg Chalmers opens 6-point lead in Barracuda Championship (The Associated Press)

RENO, Nev. (AP) -- Greg Chalmers birdied five of the final six holes Saturday to increase his lead to six points in the Barracuda Championship, the PGA Tour's lone modified Stableford scoring event.

The 42-year-old Australian had seven birdies and a bogey for a 15-point round and 39-point total at Montreux in the scoring system that awards eight points for double eagle, five points for eagle, two points for birdie and deducts a point for bogey and three points for double bogey or worse.

Ben Martin and Gary Woodland were tied for second. Martin had eight birdies in a 16-point round, the best score of the week. Woodland had an 11-point round. He won the 2013 event for the last of his two PGA…