Mayza was sent down to Triple-A Buffalo on Wednesday.
Mayza pitched 1.1 innings of relief against the Mets on Tuesday and will head to Buffalo as the Blue Jays replenish their bullpen with a pair of fresh arms in Luis Santos and Rhiner Cruz. Across 12 appearances with the club this year, Mayza has logged a 3.75 ERA and 1.50 WHIP.