A young ballplayer was cheered for hitting a home run, but his dance moves also deserve applause. Billy plays in the League of YES, a baseball club in New York for people with special needs because he has Down syndrome. While his slugging skills are impressive, he really killed it with his celebratory dance just before crossing home plate. He even borrowed a move from the famous "Backpack Kid." InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.