2 teams. Per pair 1 ball and 1 pawn. Player A stays on his spot. Player B starts with the pawn, which is about 10 meters away. Player B runs to player A. Player A throws (with 1 hand) the ball to player B. Player B keeps running until he has caught the ball and then stops. B throws the ball back and runs to the pawn to start the exercise again. after 10x change.