The true American sports explosion took place in the 1970s. The examples of this are plentiful.
The NFL-AFL merger became complete in 1970 with 24 teams, and there were 28 at the end of the decade. The NHL went from 14 teams to 21. The NBA went from 14 teams to 22. The NCAA men's basketball tournament went from conference champions and invited independents (22 to 25 teams) to 48 at the start of the '80s.
Title IX came into effect and put women into the sports arena. The North American Soccer League boomed, then busted, but it made many more Americans familiar with this odd, hands-free activity.
The first World Series night game was played in 1971. The NCAA basketball title game was moved from Saturday afternoon to Monday night in 1973.
There are two happenings that had as much to do with these large changes in our SportsWorld as any other:
The launch of "Monday Night Football" at the start of the decade, Sept. 21, 1970, and the launch of ESPN at the end of the decade, Sept. 7, 1979.
"That wasn't the connection we made when we put this together, but that's a good thought," Chris Berman said. " 'Monday Night Football' turned sports into a prime-time attraction, and ESPN turned sports into a daylong attraction."
"Monday Night Football" moved from ABC to its cable partner, ESPN, in 2006. The series kicks off its 48th season Monday night in Minneapolis, with the Saints and the Vikings in the first game of a doubleheader.