Diamondbacks hand A's seventh loss in eight games

(Photo credit: Joe Camporeale-USA TODAY Sports)

Christian Walker had three hits and two RBIs to help the Arizona Diamondbacks to a 5-1 win over the Oakland Athletics in the rubber game of their three-game series on Sunday afternoon in Phoenix.

Arizona starter Brandon Pfaadt allowed one run and five hits over six innings. He struck out eight and walked two.

Joe Mantiply (3-1) threw an inning of scoreless relief, followed