Slumping Nolan Arenado is due back in the Colorado Rockies' lineup Sunday for the rubber game of their series with the Los Angeles Dodgers. Arenado did not play Saturday when the Rockies increased their lead over the Dodgers in the National League West to 1 1/2 games with a 4-2 victory. In the race for the second NL wild-card spot, the Dodgers trail the St. Louis Cardinals by one game.