Nyorai kupfuurira kweiyi ndima - Riendeau aizopedza mwaka wa1986/87 na1987/88 achitambira nhengo yechikwata chiduku cheMontreal, Sherbrooke Canadiens yeAHL. Mumwaka wake wokutanga, Riendeau akapiwa Harry "Hap" Holmes Trophy yekubvumira zvinangwa zvishoma-zvinopesana muAHL. Pasinei nokuisa zvinyorwa zvekukunda muvaduku, Riendeau akatambura mukuonekwa kwake chete kweMontreal munguva ye 1987-88, umo akabvumira 5 zvinangwa mumaminitsi e36. NeMontreal ichitova nechinangwa chakanakisa kubva kuna Patrick Roy naBrian Hayward, Riendeau akachinjirwa kuSt. Louis musi wa9 Nyamavhuvhu 1988 naSergio Momesso waJocelyn Lemieux, Darrell May uye wechipiri sarudzo yeSt. Louis (uyo akazova Patrice Brisebois) mu1989 NHL Entry Draft
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