As of the 2018 season, the age cutoff for Pony baseball players nationwide is August 31st. Your player will be placed into a division according to their age on August 31st of the season year. For example, if your player turns 9 years old on July 21st, 2027 your player will be placed as a 9 year old (Mustang) in the 2027 season, even though he was 8 years old during the season.