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Stanley Cup champions: NHL best all-time winners list - ESPN
The Stanley Cup has been awarded to the NHL's champion every year since 1927 (with one exception). From 1915 to 1926, it was awarded to the winner of the NHL/NHA vs. PCHA/WCHL/WHL championship series (with one exception), and prior to that (1893-1914), it went to the winner of the Challenge Cup in Canada.