Basketball defense drills: shell, closeout and box out

Most basketball defense drills are versions of three jobs. One defender gets to the ball under control. Four or five defenders move together on every pass so that a drive meets help. And when the shot goes up, somebody finds a body before anybody looks for the ball. The closeout, the shell and the box out train those three jobs, in that order, and a team that does all three well is hard to score against whatever system it plays.

This guide covers each drill, the coaching points that matter, and how to progress from a walk-through to live play.

The order to teach them

1. Closeout. One defender, one shooter. The individual skill every other drill depends on.
2. Box out. The end of every defensive possession. Without it, a good stop is a second shot.
3. Shell. Four defenders moving together, then closing out and helping as a unit.
4. Advantage situations. Defending outnumbered in transition, when the shell has not had time to form.

You can teach the first two from U10. The shell usually works from around U14, and younger players can learn the same ideas 2-on-2 or 3-on-3.

The closeout drill

A defender starts in help under the basket. The coach passes to a shooter on the wing, and the defender closes out to a marker a step off the shooter, high hand up. Then he recovers to help and closes out again to the corner.

The coaching points, in the order players get them wrong:

• Leave on the pass, not on the catch. Half a second late is a step too far away.
• Sprint, then chop. Sprint the first two-thirds, then short, quick steps the rest of the way. A defender who sprints all the way flies past the shooter.
• High hand, low hand. The high hand goes to the shooter’s shooting hand, the other stays low for the drive.
• Hips down, weight back. A closeout that arrives leaning forward gives up a free drive.
• Shot first, then drive. Take away the shot, then slide to contain.

The corner closeout is shorter and flatter, because the shooter is closer to the basket and the angle is different.

Which side of the shooter you take away is a team rule. The drill as drawn takes away the baseline. A no-middle defense does the opposite and closes out to send the ball baseline, into the help. Neither is wrong; teaching both is. Pick one and close out the same way in every drill.

Progressions. Let the shooter play 1-on-1 with at most two dribbles once the closeout is clean. Then have the coach pass to either side, so the defender has to read the pass. Then start the defender on the opposite block, so the closeout is longer.

The box out drill

Two defenders guard two offensive players on the wings while the coach shoots from the top. On the shot, each defender finds his man, makes contact, pivots into him and holds, then goes and gets the ball.

The sequence has names because players need to hear it the same way every time: find, hit, get.

• Find. See your man the moment the shot goes up, before you look at the ball. This is the step almost every young player skips.
• Hit. Step into him with the forearm and chest, then reverse pivot so your back is on his chest. Make contact first; the rebound comes second.
• Hold. Wide base, low hips, elbows out, hands up. Hold for a count.
• Get. Go and take the ball at its highest point with two hands, chin it, pivot away from pressure and outlet.

Score it: a point to the offense for every offensive rebound, a point to the defense for every box out and catch. Have the coach miss long on purpose sometimes, so the box out has to last. Then move to 3-on-3 with the coach shooting from different spots. The box out drill page has every phase.

The shell drill

Four offensive players stand on the perimeter. Four defenders guard them, and every time the ball moves, every defender moves with it. The shell is the drill where a group of individual defenders becomes a team.

The positions, by distance from the ball:

• On the ball: pressure, with a hand active.
• One pass away: in the gap, ready to help on a drive and to recover. Teams that deny play higher, with a hand in the passing lane; pack-line teams play lower and sag into the gap. That is your choice, made once.
• Two passes away: in the help line, able to see man and ball. Point one hand at each.

The rule that makes the shell work: move on the flight of the pass, not when it is caught. By the time the receiver has the ball, every defender should already be on his new spot. Then talk on every pass: “ball”, “help”, “I have the drive”.

Once the movement is automatic, add a drive.

On a baseline drive, the on-ball defender stays on the hip, the low man meets the driver before he reaches the lane, and the next defender sinks to cover the rim behind him. This is the rotation that decides most half-court possessions, and the shell is the place to rehearse it.

Progressions, roughly one per week:

1. Walk it. No dribbles, the offense passes on a count.
2. Pass at game speed, still no dribbles.
3. Allow drives to the baseline and the middle.
4. Add pass and cut: the defender jumps to the ball and denies the give and go.
5. Play it live once the offense has made three passes.
6. Add screens: down screens first, then ball screens.

A useful scoring rule: the defense has to get three stops in a row to rotate to offense. Stops come quickly when the shell is good and slowly when it is not, which is exactly the feedback you want.

Defending outnumbered

The shell assumes the defense got back. In transition it often did not. Continuous 3-on-2, 2-on-1 teaches the tandem: the top defender stops the ball, the bottom defender takes the first pass, and the top defender drops to the rim.

Then the two defenders go the other way 2-on-1, which keeps everyone running. Our guide to conditioning drills with the ball uses the same drill as the backbone of a conditioning block.

A 15-minute defense block

Minutes	Drill	Focus
0–4	Closeouts, wing and corner	Sprint, chop, high hand
4–8	Box out, 2-on-2 then 3-on-3	Find your man first
8–15	Shell, at this week’s progression	Move on the flight of the pass

Put it after the warm-up and before the scrimmage, so the scrimmage can reward what the block taught. A rule like “a point for every box out the coach sees” sends the drill back into the game.

Common mistakes

• Closeouts that fly by. Usually the defender sprinted all the way. Teach the chop.
• Moving after the catch. The shell is one beat late. Say “on the pass” until they hear it in their sleep.
• Silent defense. If nobody talks in the shell, nobody will talk in a game.
• Boxing out and watching. The box out ends when the defense has the ball, not when contact is made.
• Never adding the drive. A shell that only passes on the perimeter teaches positions, not defense.

Drawing your defense drills

The closeout, the shell, the box out and the 3-on-2 are in the SlongeHoops drill library, with a diagram for every phase and the coaching points on the drill card. Open any of them in the app to change it, for example to start the shell in a different alignment or to add a screen. Or draw your own in the drill designer: put down the markers, add up to twelve players a side, and drag from each player to show the slide, the closeout or the cut.

One honest note: in a drill, defenders go where you draw them. The simulated defense in the app, which positions defenders by itself according to the coverage you pick, is built for plays and is still in Beta. For a defensive drill, drawing the rotations yourself is the point anyway.