Hernandez will have his contract selected from Triple-A Columbus ahead of Tuesday's game against the Blue Jays, Guardians Prospective reports.
Hernandez has been decent at Triple-A since being activated from the 60-day injured list near the end of July, though one blowup outing against Saint Paul on Aug. 20 has inflated his ERA to 5.40 over 13.1 innings (12 appearances). He'll be called on to provide bullpen support for the Guardians once rosters expand Tuesday.