With their 11-5 win over the Angels, Oakland has won seven in a row, launching themselves to the top of the AL West standings with a one-game lead over Texas.
Moss was 3-for-5 with four RBI, scoring twice. The capable first baseman is batting a cool .400, with 10 RBI and two home runs.
After starting the season with two losses to Seattle, the A's came back to win the final two games of that series, then swept the Astros three straight and have won the first two games of their series with the Angels, which culminates tonight at 7:05 PDT in LA. The A's are 5-0 on the road while the Angels are still searching for their first home win (0-2).
Pace by rookie center fielder A.J. Pollock's best game as a pro, Arizona blew away the visiting Pirates with three runs in each of the first and second innings and four more in the fourth.
Pollock who was 3-for-5 with four RBI and three runs, doubled and scored the first run for the Diamondbacks in the first on a wild pitch, socked a three-run homer in the second and led off the fourth with a solo shot.
Pollock played 17 games with Arizona in 2012, and has stuck as the regular center fielder.
Avoiding the sweep in Pittsburgh, the D'Backs get a day off Thursday before opening a three-game home set with the Dodgers on Friday.