In the Soccer Bowl playoffs, the Cosmos defeated Spring and Fall regular season champion Miami FC in the semifinals via penalty kick shootout.

For the next two seasons using a mix of first team and reserve players, Cosmos B, playing games at both Mitchel Athletic Complex and Rocco B. Commisso Soccer Stadium, finished the regular season first in the North Atlantic Conference and won the conference playoff championship both times.

In 2019, the team qualified for the NPSL National Championship but fell to fellow NASL cast-off Miami FC, 3–1, at Mitchell.

In June of that year, team owner Rocco B. Commisso completed the purchase of Serie A side ACF Fiorentina.

[7] On November 21, 2019, the Cosmos were announced as the newest member of the National Independent Soccer Association with plans to begin to play the following year.

[40] The regional tournament is set to act as both a pre-season and chance to "provide a platform for professional and amateur independent clubs to play together on a national stage."

Source: Match reports All eight NISA teams qualified for the 2020 Fall tournament, which will be hosted at Keyworth Stadium in Detroit, Michigan, beginning on September 21 ending with the final on October 2.