Defense
For defending throw-ins consider the grid above. All defenders should rotate to the ball & be in one of the 4 squares closest to the ball.
(above) The opponent’s R Defender has won the ball. Note how the defense rotates to the ball. The open space is over top the defenders, but that space is covered by the sweeper/keeper. The L Forward is left in open space because that diagonal pass, which is about 50 yards in the air, is extremely difficult to place when the defensive pressure is so great. In addition, the pass would be very difficult to control. Our R Midfielder would run down the defender if the pass were successful.