There are no walks or strikeouts. The ball must travel 10 feet or it is a foul. No fielder may cross the playing line until the ball is hit. Player stays on the base until the ball is hit. An inning is over when all the players have batted once.
Standard game is four innings.
Scores are not kept for the younger players. Safety helmets must be worn. 17 to 20 ounces. Softer than a standard baseball. Molded core or sponge rubber center.