Not only does this end Mayza's season, it likely rules him out for 2020 as well.
Mayza suffered the injury Friday night. He collapsed to the ground after throwing a pitch to New York Yankees infielder Didi Gregorius and was then removed from the game.
(Video courtesy: MLB)
Mayza later underwent an MRI that revealed the severity of the injury.
The 27-year-old served as one of Toronto's regulars out of the bullpen. He posted a 4.91 ERA and 1.40 WHIP over 51 1/3 innings.