WASHINGTON – Brandon Webb earned his major league leading 13th win, pitching six scoreless innings in the Arizona Diamondbacks’ 2-0 victory over the Washington Nationals on Tuesday night.

Webb (13-4) struck out six and allowed six hits and two walks in his first start since being chosen for the NL All-Star team for a third straight year. It was the 16th time in his 19 starts Webb lasted at least six innings.

After Webb left, Arizona’s bullpen did not allow a baserunner. Chad Qualls pitched the seventh, Tony Pena the eighth and Brandon Lyon pitched the ninth for his 19th save.