<P> PONY Baseball and Softball is a non-profit organization with headquarters in Washington, Pennsylvania . Started in 1951, PONY organizes youth baseball and softball leagues and tournaments, as over 500,000 players annually play PONY in over 4,000 leagues throughout the United States and over 40 countries world - wide . The televised Pony League World Series held annually in August at Washington's Lew Hays Pony Field attracts teenage teams from around the world . Membership is open to children and young adults from age 4 to 23 and the leagues are organized in two - year age brackets with "an - under" programs . </P> <P> Children at the Washington, Pennsylvania YMCA named the organization PONY, which stood for "Protect Our Neighborhood Youth ." This later became "Protect Our Nation's Youth ." </P>

What are the ages for pony league baseball