The right-hander is dealing with arm fatigue and will ramp up slower, manager John Schneider announced Tuesday. Surgery is not required and Bieber is expected to pitch early this season.
Bieber returned from Tommy John surgery last August and helped the Blue Jays reach the World Series. He then picked up his player option to return to the rotation, which was further reinforced by the additions of Dylan Cease and Cody Ponce this off-season.
Kevin Gausman, Trey Yesavage, Jose Berrios and Eric Lauer are the other starting pitchers on the roster.
