Detroit Lions Franchise History

4 NFL championship seasons: 1935, 1952, 1953, 1957
Last NFL championship: 1957, 61 seasons ago
 
Portsmouth Spartans became Detroit Lions in 1934
 
Best finish (by location):
Portsmouth finish 6-5 (.545) in Western Division in 1933 season
Detroit beat NY Giants for NFL Championship in 1935 season
Detroit beat Cleveland for NFL Championship in 1952 season
Detroit beat Cleveland for NFL Championship in 1953 season
Detroit beat Cleveland for NFL Championship in 1957 season