Martina McBride will perform at the Andre Agassi Foundation's Grand Slam for Children benefit concert on Oct. 29 in Las Vegas. Michael Bublé, Jimmy Kimmel, Smokey Robinson and Train will also take part in the concert at Wynn Las Vegas to raise money for the Andre Agassi College Preparatory Academy, a tuition-free K-12 public charter school in Las Vegas, the tennis legend's hometown. The evening will also include a cocktail reception, gourmet dinner and live auction. Event sponsorships begin at $10,000. Additional artists will be announced at a later date.