Severino was demoted back to Triple-A Scranton/Wilkes-Barre following Sunday's game against the Rays.
The youngster was given another shot at the starting rotation Sunday, but what followed was a disastrous outing in which he coughed up seven earned runs on eight hits and a walk over just 3.2 innings, though he did add seven strikeouts. The Yankees didn't announce a corresponding move but that will likely come before Monday's series opener against Toronto.