The righthander is beginning to match his 94-mph fastball with a devastating slider that helped him have such a dominant season at double A and triple A before being promoted.
He looks to have a chance to stick as a bullpen piece.
The two remaining boroughs, Anjou and La Salle, were won unanimously by local parties, Équipe Anjou and Équipe Barbe Team respectively.
Several key city council figures were defeated, such as Russell Copeman, Harout Chitilian, Claude Dauphin, Anie Samson, Réal Ménard and Elsie Lefebvre.
Projet Montréal founder Richard Bergeron, who had crossed the floor to Équipe Coderre, was defeated by the candidate for his former party, Robert Beaudry.
There was one request for a recount, in the race for borough councillor for La Pointe-des-Prairies in Rivière-des-Prairies–Pointe-aux-Trembles, in which Lisa Christensen of Projet Montréal had been announced as the winner with a lead of 32 votes.
Mariouche Gagné was born in the First Nations village of Loretteville in 1971.