Kenley Jansen is back, and just in time to help the Los Angeles Dodgers chase a sixth straight NL West title in September. The All-Star closer worked the ninth for his 33rd save, and the Dodgers edged the division-leading Arizona Diamondbacks 3-2 on Friday night. Los Angeles moved within a game of Arizona, while Colorado dropped 1 1/2 games back after a 7-0 loss in San Diego.