the Browns and the AAFC were nascent entities and faced tough competition from the NFL. "I just went up there to see what would happen", center Frank Gatski said many years later. Cleveland's first regular-season game took place September 6, 1946 at Cleveland Municipal Stadium against the Miami Seahawks before a then-record crowd of 60,135. That contest, which the Browns won 44–0, kicked off an era of dominance. With Brown at the helm, the team won all four of the AAFC's championships from 1946 until its dissolution in 1949, amassing a record of 52 wins, four losses and three ties. This included the 1948 season, in which the Browns became the first unbeaten and untied team in professional football history. The Browns had few worthy rivals among the AAFC's eight teams, but the New York Yankees and San Francisco 49ers were their closest competition. While the Browns excelled on defense, Cleveland's winning ways were driven by an offense that employed Brown's version of the T formation, which emphasized speed, timing and execution over set plays. Brown liked his players "lean and hungry", and championed quickness over bulk. Graham became a star under Brown's system, leading all passers in each of the AAFC's seasons and racking up 10,085 passing yards. Motley, who Brown in 1948 called "the greatest fullback that ever lived", was the AAFC's all-time leading rusher. Brown and six players from the Browns' AAFC years were later elected to the Pro Football Hall of Fame: Graham, Motley, Groza, Lavelli, Willis and Gatski. The Cleveland area showered support on the Browns from the outset. Meanwhile, the Browns unexpectedly had Cleveland to themselves; the NFL's Cleveland Rams, who had continually lost money despite winning the 1945 NFL championship, moved to Los Angeles after that season. The Browns' on-field feats only amplified their popularity, and the team saw average attendance of 57,000 per game in its first season. The Browns, however, became victims of their own success. Cleveland's dominance exposed a lack of balance among AAFC teams, which the league tried to correct by sending Browns players including quarterback Y. A. Tittle to the Baltimore Colts in 1948. Attendance at Browns games fell in later years as fans lost interest in lopsided victories, while attendance for less successful teams fell even more precipitously. The Browns led all of football during the undefeated season in 1948 with an average crowd of 45,517, but