NHL's greatest rivalries reveal enduring passion and historical significance

The rivalry between the Colorado Avalanche and Detroit Red Wings ranks seventh in NHL history, marked by fierce playoff battles in the 1990s. The Washington Capitals and Pittsburgh Penguins, highlighted by star players Alex Ovechkin and Sidney Crosby, follow at sixth. The Toronto Maple Leafs vs. Boston Bruins rivalry includes a streak of eight playoff series victories for Boston since 1969. At fourth, the New York Rangers and New York Islanders maintain a competitive edge with an even historical matchup. The Pittsburgh Penguins and Philadelphia Flyers, at third, recently faced off in the playoffs this year, adding to their storied rivalry. The Edmonton Oilers and Calgary Flames, ranked second, are known for their intense matchups, including memorable goalie fights. The top rivalry, between the Boston Bruins and Montreal Canadiens, is celebrated for its deep historical roots and passionate fan engagement.

• 12:53 PMYahoo Sports — 7 greatest NHL rivalries in hockey history