Nyorai mberi kweiyi ndima - Mushure memwaka, maneja mukuru Bobby Clarke akaramba kusaina chibvumirano chitsva naMcCrimmon, achisarudza panzvimbo pekutengeserana naye. Akatumirwa kuCalgary Flames musi waAugust 27, 1987, mukutsinhana kwekusarudzwa kwechitatu-kutenderera pa1988 NHL Entry Draft uye yekutanga-kutenderera pa1989 Draft
. Pa1987-88 Flames, McCrimmon akabatana naAl MacInnis, Paul Reinhart, Gary Suter naRic Nattress kuti vagadzire imwe yenzvimbo dzakakwirira dzekudzivirira muNHL. Akawana mapoinzi makumi mana nemaviri kuFlames, akahwina mubairo weNHL Plus-Minus neligi-inotungamira +48 uye akatumidzwa zita rechipiri-timu All-Star. Mukuwedzera, akatamba mu 1988 All-Star Game.