EDMONTON -- The rivalry between the Edmonton Oilers and Calgary Flames was one of the most intense in the NHL when the two teams were perennial Stanley Cup contenders.
The Oilers and Flames had to go through each other to win championships in the 1980s, which led to legendary Stanley Cup Playoff series between the teams.
The Battle of Alberta will be renewed for the first time this season at the 2023 Tim Hortons NHL Heritage Classic at Commonwealth Stadium on Sunday (7 p.m. ET; TVAS, SN, TBS, MAX), the first outdoor game in a rivalry that ranks among the best in NHL history.
"It was fantastic," said Hockey Hall of Fame forward Lanny McDonald, a member of the Flames from 1981-89. "You look back at the great rivalries over the years, Montreal-Toronto, Montreal-Boston, Toronto-Detroit and that battle between the Alberta teams was so good, it was right up there.
"If you couldn't get up for a game against the Oilers, then something was wrong with you, and you needed to go play for a different team, and the same went for them. You knew it was going to be a battle from the opening draw, and especially with Bob Johnson coaching against Glen Sather, sometimes it started from the opening face-off, depending on who put who on the ice."
The Oilers and Flames played their first postseason game in the 1983 Smythe Division Final. Edmonton won the series in five games and advanced to its first Stanley Cup Final, where it was swept by the New York Islanders.
Edmonton and Calgary met in the division final again the following season, a series that went down in NHL playoff lore.
Calgary battled back from a 3-1 deficit in the best-of-7 series with a one-goal victory in Game 5 and overtime win in Game 6. The Flames led 4-3 midway through the second period in Game 7, but the Oilers rallied to win 7-4. Edmonton won the Stanley Cup for the first time with a five-game victory against the Islanders in the 1984 Final.
Three of the four losses the Oilers sustained on their run to the Cup were to the Flames. Edmonton swept the Winnipeg Jets in the best-of-5 division semifinal and Minnesota North Stars in the Campbell Conference Final.
"People ask me if I loved the Battle of Alberta and I say, 'No,'" said Hall of Fame defenseman Kevin Lowe, a member of the Oilers teams that won the Cup five times from 1984 to 1990. "In hindsight, yes, and that it was special for the fans, and it never seemed to ever let anyone down in terms of expectations, there was always something that happened. But it was difficult, it was really difficult to play those games. They were an exceptional team and in order to win you had to be on top of your game. And if you weren't on top of your game and weren't prepared, you might get your head knocked off."
The Oilers and Flames played another epic series in 1986, with Edmonton looking to win the Cup for the third consecutive season until losing Game 7 of the division final. Oilers defenseman Steve Smith banked a pass from behind his own net in off the back of goalie Grant Fuhr 5:14 into the third period to give the Flames a 3-2 lead. Calgary hung on to win the game and the series but lost the Final in five games to the Montreal Canadiens.