Sunday, he took his final step with the big league club before he returns. Severino heads to Tampa this week while the Yankees go out to the West Coast. He expects to throw at least another simulated game against hitters before he hopes to be able to make a minor league rehab start. With the minor league seasons ending at the beginning of next month, the window to properly stretch Severino out is closing quickly. The Yankees, however, have said there is the possibility of using him in short spurts and stretching him out in big league games.