Until John Wetteland came along and re-wrote the team's history books, closing 105 games for saves in just 232.3 innings over three seasons, the strikeout king who followed the team's best-ever set-up man, Mel Rojas, who would take over the closer's role when Wetteland was traded to the New York Yankees in 1995.
Yankees fans remember him as well, as he was a huge part of their 1996 World Series win, when he was voted the World Series MVP for his efforts against the Atlanta Braves', the Expos' former arch-nemesis team.
Ironically, the Yanks also let him go to promote their set-up man in his place - in their case, it was Mariano Rivera, one of the all-time greats, leaving Wetteland free to sign his final MLB contract, with the Texas Rangers.
He hit the 43-save mark three times - once with each team - and the time he did it with the Yankees, in 1996, he led the Majors.
Still, he'll always be an Expo in my book, the best representative of #57 in My Expos Numbers Project, on card #293 from Leaf's 1994 Donruss set:
Those who know your name trust in you, for you, LORD, have never forsaken those who seek you.