re: CBS only doing one night game question

It's not a matter of 'protecting' ABC, but rather ESPN. The SEC has a deal for primetime games on either ESPN or ESPN2. ESPN wouldn't want their nightly SEC game going up against the best game from the conference on CBS. CBS feels like they're in a good position with the 2:30 slot. So all three parties are happy. The SEC has the best tv deal (ignoring the money, CBS is getting a steal) of all the conferences.