 Three Tucson-based teams (the Mexican All-Stars, the Diamondbacks, and the Rockies) would leave the league after the 2000 season, largely due to travel concerns, followed by the White Sox two years later.All three teams have since relocated their spring training complexes to the Phoenix metropolitan area and the Diamondbacks and White Sox have reinstated their rookie league teams.The start of the 2020 season was postponed due to the COVID-19 pandemic before ultimately being cancelled on June 30.