Divide the team into groups of four. Place members of each group between 60 and 90 feet apart depending on age. Place first person on the first base foul line and spread the balance of players towards left field. Infielders should be in the middle two relay positions so they can practice relay moves. Player at the beginning of the line has the ball. On coaches command the players throw down and back a predetermined number of times. If an overthrow occurs or a ball is missed, the ball must return to the start of the line and the throw made accurately before the ball can be advanced.