Kyle Drabek has a strained UCL and has hit the DL. There has been no news on how long Drabek might be out of action. Brett Cecil will start on Sunday in Morrow's spot. Cecil last pitched on Tuesday so he was in line for this start unless Alvarez was moved up. The Jays might have an announcement regarding next Tuesday's starter later although, because that involves a second roster move, the announcement might not be made until Sunday.
So the rotation for the next four days is Drew Hutchison, Ricky Romero, Brett Cecil and Henderson Alvarez with TBA as your number five.
Update: Drabek is on his way to see Dr Andrews. He might need another TJ operation. Drabek had one TJ operation several years ago. Jason Frasor is another pitcher who has had two TJ's but it is rare.