The 1933 Portsmouth Spartans season was their fourth in the National Football League (NFL) and final season before the franchise was sold and moved to Michigan to become the Detroit Lions. The team went 6âÂÂ5 (), failing to improve on their previous season's output of 6âÂÂ2âÂÂ4 ().
Portsmouth failed to qualify for the playoffs.
The Spartans started out fast with a 5âÂÂ1 mark, just a half-game behind the first place Bears (5âÂÂ0). After splitting their next two contests, Portsmouth (at 6âÂÂ2) was still within half a game of Chicago (6âÂÂ1âÂÂ1). But the Spartans would lose their next three games, including back-to-back defeats to the Bears to close the season.
The Spartans were sold and headed north for the 1934 season, becoming the Detroit Lions. Ironically, the team would return for one last game at Spartan Field when the Lions' October 28 contest against failing Cincinnati Reds franchise was moved from the Queen City to Portsmouth; Detroit won, 38âÂÂ0, in the last NFL game played in the small Ohio town.