Guardians starter McKenzie exits with elbow issue; catcher Zunino designated

Triston McKenzie was scratched from his June 16 start against Arizona due to elbow discomfort.
Veteran Touki Toussaint started in McKenzie's place after being called up from Triple-A Columbus.
The Guardians designated catcher Mike Zunino for assignment and optioned reliever Cody Morris to clear roster space.
McKenzie's injury is a concern given his history of arm problems and importance to Cleveland.
Zunino's departure could pave the way for catching prospect Bo Naylor to join the big league club.