Janssen departed Florida on Saturday and headed across the country to have the operation, which was performed by arm specialist Dr. Lewis Yocum in Los Angeles. The 26-year-old Janssen will not be able to resume throwing until at least July or August, and Toronto is optimistic that he'll be healthy by Spring Training next year.
Entering this spring, Janssen was a candidate for the fifth spot in the Blue Jays' rotation or for a late-inning role in the bullpen. The right-hander served the latter role in 2007, when he posted a 2.35 ERA and finished with 24 holds in 70 appearances. Janssen's spring came to abrupt end on March 11, when he cut a bullpen session short due to shoulder pain.
Janssen was diagnosed with a slight tear in his labrum and opted to have the surgery performed by Yocum. With Janssen out of the mix for a job, Jesse Litsch is the clear favorite to win the fifth-starter's job and reliever Brandon League could potentially capture one of the vacant spots in Toronto's bullpen.
Jordan Bastian is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.