The only federal restrictions applying to sports events shown on superstations and other imported signals was the so-called "same-game rule," enacted by the FCC in June 1975 to prohibit cable systems from retransmitting a sports event through a distant signal within a 35 miles zone around the city of the home team's arena if the game is not airing on a local television broadcaster, with a subsequent amendment requiring the broadcast rights-holder to inform local cable systems of game deletions no later than Monday of the preceding calendar week of the proposed deletion. (