Have you called their organization to find out?
Looks like the second chance tryouts for the Rawlings Prospects national select 2008 squads are August 26, 2007 at Saint Louis University at 11:00am. Tryouts are for players entering grades 8-12. they have teams made up of 17-18U, 16U, 15U, and 14U.
See link below:
http://www.rawlingsprospects.com/index.php