The Guardians recalled Aleman from Triple-A Columbus on Sunday, Tim Stebbins of MLB.com reports.
Aleman has appeared in 18 games at the MLB level this season, posting a 3.38 ERA, 1.45 WHIP and 22:8 K:BB over 18.2 innings. He has three holds on his ledger but will likely be used primarily in low-leverage situations. Austin Peterson was sent down to Columbus to make room in the Cleveland bullpen.