Before the season, Pete Rozelle was elected NFL commissioner as a compromise choice on the twenty-third ballot. Meanwhile, the league expanded to 13 teams with the addition of the Dallas Cowboys. Also, the Cardinals relocated from Chicago, Illinois to St. Louis, Missouri, becoming the St. Louis Cardinals, the same moniker as the major league baseball team. The NFL introduced the Playoff Bowl, a game for third place between the runners-up from each conference. Played at the Orange Bowl in Miami, Florida, after the NFL Championship game, it benefited the players' pension fund. Philadelphia lost its opener, at home, to Cleveland, 41–24. After that, the Eagles went on a 9-game winning streak. The breakthrough came in Week Six (October 30), when the unbeaten (3–0–1) New York Giants lost at home to St. Louis, 20–13, and the Browns and Eagles were both at 4–1. In Week Seven, New York beat Cleveland, 17–13, and the Eagles beat Pittsburgh 34–7. The Eagles kept on winning, finishing 10–2 and on top of the Eastern Conference. The Western Conference race was one in which Baltimore, Chicago, Detroit, Green Bay and San Francisco all had a lead at one time. The Bears fell back after a Week Six loss to the 49ers, 25–7. In Week Seven, the 4–2 Colts and the 4–1 Packers met on November 6 in Green Bay. Baltimore, which had lost an earlier match, won 38–24, to take the lead in the Western. In Week Ten, the Colts lost at home to San Francisco, 30–22, and began a streak of defeats. Baltimore's 20–15 loss to the Lions, and Green Bay's 41–13 win at Chicago, tied the Colts and Packers at 6–4 in Week Eleven. After the Packers' 13–0 win at San Francisco, their record was 7–4, while the Colts, Lions and 49ers were all at 6–5. San Francisco and Detroit both won the next week, the former beating Baltimore 34–10, but the Packers won as well, beating Los Angeles 35–21 for the Western title. The Eagles would go on to beat the Green Bay Packers 17-13, and lay claim to the 1960 NFL
Championship. The game marked the lone playoff defeat for Packers coach Vince Lombardi before his Packers team established a dynasty that went on to win five NFL championships, including both the inaugural Super Bowl and Super Bowl II, in a span of seven years.