Walker (oblique) is not yet asymptomatic, Alex Weiner of Arizona Sports reports.
Walker, who landed on the 10-day injured list July 30 with a left oblique strain, could pick up a bat next week. The Diamondbacks are cognizant that oblique injuries are tricky for a baseball player and want Walker to be 100 percent before really ramping up. Arizona is getting by at first base with trade deadline acquisition Josh Bell, so the team doesn't need to rush Walker back.