The Rangers selected Arihara's contract from Triple-A Round Rock ahead of his scheduled start Tuesday versus the Athletics.
Arihara will be making his 2022 big-league debut after having thus far spent his entire second season in North America at Triple-A. The righty is fully built up as a starter and isn't expected to face a limited pitch count against a hapless Oakland lineup, but he still may be difficult to trust. Over his 72 innings at Triple-A this season, Arihara produced a 4.88 ERA and 1.32 WHIP.