The Pacific Coast League (PCL) was established in December 1902 as an outlaw baseball league, at least that’s what it was labeled by the Northwest League at the time. Both survived, of course, with the PCL becoming one of the continent’s top minor leagues.
Formed: November 28, 1955 – The Mississippi-Ohio Valley League re-brands as the Midwest League First Game: April 29, 1956 Seasons: 70 & Counting (as of 2026)
Formed: Disbanded: October 16, 2019 (Merged with and became part of the Frontier League) First Game: Final Game: September 14, 2019 Seasons: 15 States &
Formed: 1957 – Re-Branded from the PONY League Dissolved by Major League Baseball: 2020 First Game: Last Game: September 10, 2019 Seasons: 63 States &
Formed: June 14, 1995 Status: Active Official Website: www.atlanticleague.com First Game: May 20, 1998 (Somerset Patriots @ Atlantic City Surf) Seasons: 25 & counting (as of
