Alvarez had his contract selected by the Braves on Tuesday.
The Braves swapped out a right-handed reliever in favor of a lefty by adding the southpaw Alvarez and optioning Ryan Weber to Triple-A Gwinnett. Alvarez was routinely shelled while at Triple-A Las Vegas as a member of the Mets organization early in the season, but a change of scenery to a more pitcher-friendly league has helped bring his stats back down to earth. He worked a 1.13 ERA across 8.0 innings at Gwinnett prior to getting the call Tuesday.