1948-49 Toronto Maple Leafs
It's hard to call a two-time defending Cup champion a dark horse, but the Leafs finished the regular season at 22-25-13, the worst record among the Original Six's four playoff qualifiers. Coach Hap Day's boys turned it on in the postseason, though, dusting Boston (second) in five and then sweeping Detroit (first) while setting a record of nine consecutive finals wins that dated back to 1947.







