One coach stands 20' from home plate down the 1st base line another
coach stands 20' down the 3rd base line. Each coach will need a catcher.
Split the team up with half of the players at the SS position and half
at the 2B position. The coach standing down the 1st base line hits
ground balls to the players at SS. The coach along the 3rd base line
hits to the players at 2B. Balls are fielded and thrown back to the
catcher assisting the coach that hit ball. After a few times through the
line, have the players switch position. You can also have each player
run to the back of the other line after fielding each ball.