Sanchez was recalled by the Brewers on Monday.
Miguel recorded an unremarkable 4.15 ERA and 1.58 ERA in 26 innings of relief as a rookie last year. He owns a much better 2.12 ERA and 0.94 WHIP in 17 frames for Triple-A Nashville this season, but he'll likely be stuck in a low-leverage role for the Brewers until he proves himself at the highest level.