MASL 2 launched in 2017 to "provide an outlet for teams to either reorganize for a re-emergence in the MASL or an avenue for teams to compete in smaller markets in hopes of rising to MASL status."[1] It was announced that MASL 2 would have between 8 and 12 teams.[2]
The 2018–19 season brought the total number of teams participating in the season up from 10 to 15. Stockton, California, was announced as a market and held a team naming contest, but all news stories from the league website and all mention of the Stockton franchised were dropped. The league changed from having "Conferences" to "Divisions." Expanding from the Eastern and Western conference's the MASL 2 now had the Eastern Division, Mountain Division, and Pacific Division.
On February 25, 2021, MASL 2 announced the return of the RGV Barracudas FC to the league to compete in the 2021–2022 season.[3]
On March 11, 2021, MASL 2 officially welcomed the Cleveland Crunch to the league.[4]