BRISTOL, Conn. and PITTSBURGH, May 2, 2012 /PRNewswire/ -- ESPN announced today that GNC Holdings, Inc. (NYSE: GNC), the nation's leading specialty retailer of health, wellness and sports nutrition products, will be the presenting sponsor of the 2012 ESPNHS Games. The Games - a three-week long elite and competitive level event featuring the premier high school sports talent in the country - will take place from July 9-30 at ESPN Wide World of Sports Complex at Walt Disney World in Lake Buena Vista, Fla.