has a city ever won all championships in one year
All four of Philadelphia's major professional sports teams played in the championship game or series, in their respective sports, following the 1980 season: The 1980 Philadelphia Phillies won the World Series, while the 1980 Philadelphia Eagles lost Super Bowl XV, the 1979-80 Philadelphia 76ers lost the NBA Finals, and the 1979-80 Philadelphia Flyers lost the Stanley Cup Finals.
Multiple major sports championship seasons