The 1931 Portsmouth Spartans season was their second in the league. The team improved on their previous season's output of 5–6–3, winning eleven games. They finished second in the league. Schedule Standings References External links 1931 Portsmouth Spartans at Pro Football Reference 1931 Portsmouth Spartans at jt-sw.com 1931 Portsmouth Spatans at The Football Database Detroit Lions seasons Portsmouth Spartans Portsmouth Spartans