TWIST offers a 6 & Under Instructional Slow Pitch League that primarily plays on Saturday or Sunday afternoons in May and June at the TWIST complex in the Washington Park. Reduced injury factor softballs are used in this league and girls have a choice of letting their coach pitch to them or hitting off a batting tee. All girls get plenty of playing time in this league. There are no won-loss records, no playoffs and no trophies for this league, but all players get a team t-shirt and visor to keep and receive a participation medal and ribbon at a year-end pizza party.

TWIST also offers a participatory 9 & Under, 12 & Under, and 16 & Under Slow Pitch League that provides competition between various teams. All girls get plenty of playing time and all games are played at the Washington Park. In these leagues, won-loss records are kept, play-offs are held at the end of the season and trophies are awarded to members of the top three teams. Participation trophies are awarded in the 9 & Under league only. Any player that completes three years of service will receive a free, personalized TWIST windbreaker in the 12 & Under program or a free, personalized TWIST jacket in the 16 & Under program.