Joel Dahmen shot another sterling round to extend his lead to four shots at the Corales Puntacana Championship on Friday in Punta Cana, Dominican Republic.

Michael Thorbjornsen, the Stanford alum who earned a card through the PGA Tour University ranking, matched his career best with a 63 and was four shots behind along with Garrick Higgo (68) and Charley Hoffman (66). Among those making the cut at 3-under 141 was Ben Polland, who next week defends his title in the PGA Professional Championship.