From 1988-1990, CBS only televised the championship game. From 1991 until the end of their coverage in 2002, CBS televised one game on the first Saturday of the World Series besides the championship game.
Prior to 1988, the College World Series was a pure double-elimination event. Beginning in 1988, the tournament was divided into two four-team double-elimination brackets, with the survivors of each bracket playing in a single championship game. The single-game championship was made for broadcast television, with the final game on CBS on Saturday afternoon.
In 2003, the tournament was shifted entirely to cable on ESPN, which had begun covering all of the other games of the CWS since 1982 (and a partial schedule since 1980). The championship final became a best-of-three series between the two bracket winners, with games scheduled for Saturday, Sunday, and Monday evenings.