Palomino:

Players seventeen and eighteen are able
to pit their skills against players from
other areas and to display their talents
for review by collegiate recruiters and
professional scouts. PALOMINO LEAGUE for players 17 and 18 can be created, providing an opportunity for older players to learn the finer points of game strategy and hone their playing skills.
Both Colt and Palomino play on the regulation diamond with bases at 90 feet and a 60.6 foot six pitching distance.
Where necessary or desirable, players from age 15 through 18 may be combined on teams for local league play. Separate tournaments are conducted. Colt tournament play is limited to players of league age 15 and 16, while players of 15 through 18 are eligible for Palomino tournament play.