The Brewers reinstated Hall (pectoral) from the injured list Friday, Hunter Baumgardt of Fox Sports 920 Milwaukee reports.
Hall has been on the shelf since early June due to a left pec strain, but he has been pitching in rehab games since July 19. Across four appearances in the minors, he gave up two earned runs on three hits and three walks while punching out nine batters in 5.2 innings. He'll replace Thomas Pannone on the Brewers' pitching staff and will presumably work as a middle reliever.