Complex sentence: The Mustang baseball team was coached by Tim McCune from 1990 until the fall of 2013 when he announced his retirement, the program was soon taken over by Jeff Harp for the 2014 spring season in which Harp only stayed for a season.
Split into simpler sentences: The Mustang baseball team was coached by Tim McCune from 1990 until the fall of 2013 when he announced his retirement. The program was soon taken over by Jeff Harp for the 2014 spring season in which Harp only stayed for a season.