Complex sentence: When Bill Snyder arrived to coach at K-State in 1989, he turned the Wildcats from having the worst college football program in the nation to an above average team from the early 1990s to the early 2000s.
Split into simpler sentences: When Bill Snyder arrived to coach at K-State in 1989, the Wildcats had the worst programs in the nation. During his tenure K-State team went from worst to an above average team from the early 1990s to the early 2000s.