NEW YORK, June 21, 2012 /PRNewswire/ -- Today, AT&T* and Entertainers Basketball Classic (EBC) announced an official sponsorship agreement for the 2012 tournament at Rucker Park that will enhance the visitor experience at one of the city's premier sporting events.  Each Wednesday during the regular season will be "AT&T Day" at the street ball tournament, which has hosted elite college and pro basketball players throughout its history.