Complex sentence: Sports Challenge was a sports-centered game show that aired in weekly syndication from 1971 to 1979, with a separate version that aired briefly on CBS weekends from May 20 to September 9,1973.
Split into simpler sentences: Sports Challenge was a sports-centered game show that aired in weekly syndication from 1971-1979. A separate version aired briefly on CBS Weekends from May 20 to September 9,1973.