Walls (oblique) was activated Friday from the 10-day injured list, Ryan Bass of Bally Sports Sun reports.
Walls is recovered from a left oblique strain that has kept him sidelined since late July and figures to get consistent work at shortstop down the stretch with Wander Franco on administrative leave. Osleivis Basabe remains active with major-league rosters expanding from 26 to 28, but he could slide into more of a utility role.