Walker went 2-for-3 with a double, a walk, an RBI and a run Wednesday in the Diamondbacks' 4-2 win over the Phillies.
Walker's hold on the top job at first base appeared to be slipping after he was on the bench for the final two games of the weekend series in San Diego, but he's seemingly solidified his place atop the depth chart this week. He started in both of the first two games versus Philadelphia and went 2-for-5 with two walks between the contests. Walker will remain in the lineup for Thursday's finale, manning first base and batting cleanup.