Walcott (concussion) was reinstated from the 7-day injured list at Double-A Frisco on Wednesday, Shawn McFarland of The Dallas Morning News reports.
Walcott landed on the minor-league IL on Aug. 2 after a pickoff throw connected with his head, but he's now been cleared to return to action. The 20-year-old prospect has hit well since making his season debut at Frisco on July 17, slashing .308/.357/.577 with three homers, nine RBI, 13 runs and three steals through 56 plate appearances.