The Rangers recalled Corniell from Triple-A Round Rock on Sunday.
The right-hander will get a look with the Rangers for the first time this season after struggling to a 6.08 ERA, 1.72 WHIP and 19:10 K:BB across 26.2 innings with Round Rock. Corniell has primarily worked as a starter at Triple-A, but it's not yet clear if he's seen as a candidate to replace Jack Leiter (ankle) in the rotation.