The Rangers optioned Otanez to Triple-A Round Rock on Monday.
Otanez took himself out of contention for a spot in the Rangers' Opening Day bullpen after yielding four earned runs on four hits and one walk over 2.1 innings across his three Cactus League appearances. The 28-year-old righty will serve as a leverage arm at Round Rock to begin the season while he waits for an opening to re-emerge in the Texas bullpen.