Walker went 4-for-5 with two doubles, a run scored and an RBI in Saturday's 8-6 win over the Tigers.
The first baseman paced the Astros as part of a 15-hit attack, with both two-baggers coming off former teammate Framber Valdez. It was Walker's first multi-hit performance since June 8, snapping a 15-game skid in which he'd gone just 8-for-58 (.138) with two homers and four RBI. On the season, he's slashing .240/.309/.470 with 18 home runs, 44 runs and 53 RBI in 83 contests.