NBC televised the NFL Championship Game until 1963. The contract for the title game was separate than the regular season contracts held by CBS, which started televising NFL games in 1956. Prior to 1962, each team had its own individual television contract. (This was in contrast to the American Football League as well as established practice in college football, both of which forced all of their members to participate in a collective television contract. As the legality of such a collective contract was still in question at the time, and would eventually be declared illegal in 1984, the NFL did not pursue such a contract until Congress explicitly allowed for the NFL to do so, with conditions, in the Sports Broadcasting Act of 1961.) NBC held individual team contracts with the Pittsburgh Steelers and Baltimore Colts in 1959, 1960 and 1961. While the games were blacked out in Pittsburgh and Baltimore, they were broadcast on other NBC stations. In some cases, the game broadcast was seen on CBS in the visiting team's home region. NBC covered eleven games in 1960 and 13 games in 1961 in a "Game of the Week" format. NBC would take one week off due to its coverage of the World Series. During this era, NBC broadcast pre-recorded and edited hour-long broadcasts of NFL games in the off-season under the title "Best of Pro Football".