"The complete-the-square improves movement in all directions and is especially effective for improving defensive play," says Grover..

Start on the corner of the left side of the lane and the baseline. Sprint forward to the top corner of the key and laterally shuffe right across the top of the lane. Once you reach the opposite side of the lane, back pedal until you reach the baseline. Close the square by shuffing laterally left back to the starting position. Repeat this pattern four times to complete one rep.

Perform three reps of this drill with a three-minute rest time between reps. Like the 60-second sideline drill, decrease rest time to increase the diffculty of this drill as conditioning intensifes. Run the drill at least two to three days a week and on opposite days of the 60-second drill.