1980s
In 1980, 22 teams (all but the Atlanta Braves, Houston Astros, New York Mets, and St. Louis Cardinals) took part in a one-year cable deal with UA-Columbia (then owners of the USA Network). The deal involved the airing of a Thursday night Game of the Week in markets at least 50 miles (80 km) from a major league park. The deal earned Major League Baseball less than $500,000, but led to a new two-year contract for 40–45 games per season.
On January 5, 1989, Major League Baseball signed a $400 million deal with ESPN, who would show over 175 games in beginning in 1990. For the next four years, ESPN would televise six games a week (Sunday, Wednesday Night Baseball, doubleheaders on Tuesdays and Fridays, plus holidays).
NBC's Bob Costas believed that a large bulk of the regular season coverage beginning in the 1990s went to cable because CBS, the network that was taking over from NBC the television rights beginning in 1990, didn't really want the Saturday Game of the Week.
Read more about this topic: Major League Baseball On Cable Television