The 1980 Montreal Expos season was the 12th season in franchise history. The Phillies and the Expos were tied in the standings entering the final weekend of the 1980 season with a three game series set between the two clubs at Olympic Stadium. On October 4, with the Phillies holding a one-game lead in the standings, and with the score tied at four heading to the tenth, Mike Schmidt hit a blast deep into the seats in left field to give the Phillies a 6-4 lead and ultimate win to clinch the NL East. This was the Expos closest shot at making the postseason in their brief 12 year history.