In Week Seven, the Bears lost at home to the Rams, 23–21, while the Packers beat the Pirates (the future Steelers) 20–0, giving Green Bay the lead for the first time. The Packers won their next three games to clinch the Western Division.
In the Eastern Division, the Redskins led until Week Ten, when they fell to the Bears, 31–7; the Giants' 28–0 win over the Rams gave New York the division lead on November 13. The division title still came down to the last day of the regular season, December 4, when 57,461 turned out at the Polo Grounds in New York to watch the 7–2–1 Giants host the 6–2–2 Redskins. A Washington win would have made them 7–2–2 and New York 7–3–1, with the Skins as division champs. New York needed only to win or tie, and did the former, five touchdowns en route to a 36–0 victory.
After being crowned champion the Giants faced a team of "Pro All-Stars," an all-star team consisting mostly of NFL players but also including three players from the Los Angeles Bulldogs, in an exhibition game at Wrigley Field in Los Angeles, California on January 15, 1939. The game, which the Giants won 13–10, was the first of five annual NFL all-star games held under the format (but the only one to include non-NFL players) prior to the creation of the Pro Bowl in 1951.