Figure out where you are on the field. If you're past 15 or so yards, the ball is going down the field. When you're in great position, you're able to control the receiver.

We used a racquetball and threw it off the wall as hard as we could, then tracked it down with our eyes and feet. Nike has new balls that bounce all sorts of different directions and really help you learn to track the ball and move your feet to react quickly.

The two biggest things to understand when you're tracking the ball as a defensive back is your position on the field and understanding that once the ball is in the air you become the receiver. Too many young defensive backs worry about the receiver catching it or what the receiver is doing instead of focusing on what they should be doing. Just go out and make the play yourself, don't worry about him. Know where the ball is and attack it. Put yourself in position to bat it or catch it and make the play.

Figure out where you are on the field. If you're past 15 or so yards, the ball is going down the field. When you're in great position, you're able to control the receiver.

I’m going with Darrelle Revis.

I play a lot of basketball and racquetball, as they're both great for your feet and hand eye coordination. Other drills can help as well, such as simply catching a football in distant positions from different heights and velocities.

You need to just understand where the ball is and how to use your body. Timing your jump the right way is crucial. Learn how to use your body to shield the receiver and box him out, again, much like a rebound. Trying to beat a receiver to a ball can be a lot like you're posting him up. Rebounding is great practice because you can employ those skills - body position, leverage, timing - a lot more than you might in a football game or practice if the quarterback doesn't look your way.