Sign-up for Spring Intramurals has Begun St. Thomas Newsroom December 14, 2011 The sign-up for spring intramurals has begun. The registration system has changed; starting spring semester an online-registration system – IMLeagues – will be used for all intramurals. To play intramurals you will need to create an account on IMLeagues.com. Registration directions can be viewed here. For more information email Zachary Johnson.