Among the ten theatres named were Ohio's Cleveland Play House, which celebrates its 100th anniversary in 2015 and was home to Paul Newman, Alan Alda and Margaret Hamilton at the beginning of their careers, and Arena Stage in Washington, D.C., where The Velocity of Autumn, starring Estelle Parsons and Stephen Spinella, was performed prior to its Broadway run.

California's Berkeley Repertory Theatre, which was home to the world premiere of the Green Day musical American Idiot, was also named on the list, along with New Jersey's Paper Mill Playhouse, which presented the musical Honeymoon in Vegas prior to its opening on Broadway.

Steppenwolf Theatre Company, in Chicago, IL, has housed several productions before their Broadway runs, including Who's Afraid of Virginia Woolf? and This Is Our Youth, as well as the Broadway-bound play Airline Highway.

The list also included Yale Repertory Theatre, in New Haven, CT, which was home to Marie Antoinette before it played Off-Broadway in 2013, and the Guthrie Theater in Minneapolis, MN. San Diego, CA is home to La Jolla Playhouse, which has won 35 Tony Awards for productions sent to Broadway, including Jersey Boys, Memphis and Peter and the Starcatcher.

American Repertory Theater in Cambridge, MA, has sent several Tony-winning productions to Broadway, including Porgy and Bess and Pippin as well as 2013's acclaimed revival of The Glass Menagerie. The list also included the Alliance Theatre, in Atlanta, GA, which won the 2007 Tony Award for Outstanding Regional Theatre.