The first USL Cup featured teams exclusively in
USL League One; however,
USL already intended to expand the cup beyond just that league. The format of the
2024 USL Cup allowed a balanced league schedule for the
2024 USL League One season, with each team playing each other twice and also preserving the length of the season. Previous to the creation of the USL Cup, the league had regularly played an unbalanced schedule of 28–32 games, often playing other teams in the league three times. O'Neill emphasized in USL's announcement of the tournament that the creation of the USL Cup would "open up more possibilities for the competitive structure going forward." The announcement also hinted that the tournament could be a precursor to a
promotion and relegation system within the professional levels of the USL. The 2025 edition of the USL Cup saw the addition of USL Championship clubs to the competition, keeping a similar format to the previous year's edition. == Competition format ==