The Blue Jays recalled Mayza from Triple-A Buffalo on Sunday.
Mayza will head back to the big leagues just four days after being optioned to Triple-A with fellow reliever Rhiner Cruz (groin) hitting the 10-day disabled list. Over 12 appearances with the Blue Jays this season, Mayza has posted a 3.75 ERA and has struck out 10 over 12 innings. He'll likely work mostly in lower-leverage spots during his current stint with Toronto.