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← Library of Schemes

defense

Box-and-one defense

Four defenders guard areas in a box: two farther from the basket and two nearer it. The fifth defender follows one selected scorer.

How it runs

Box-and-one: one follows the scorer, four guard space

X1 follows scorer 2. X2, X3, X4 and X5 guard a zone. Keep these jobs separate so the zone still covers the other players.

1–5 are players on offense. X1–X5 are defenders. Each number stays with the same player in every step; it does not lock that player into a position.

Four in a box; X1 stays with 2Half court diagram, frame 1 of 5: Four in a box; X1 stays with 2. 10 players, showing pass, defensive slide, cut.1234512345

Diagram 1 of 5

Four in a box; X1 stays with 2

1 passes to 3 on the left wing. X2 moves out to guard 3. X1 stays with 2 on the right. The other four start two high and two low in a box.

Diagram key

  • Offense
  • Defense
  • Coach
  • Neutral
  • Ball
  • Cone
  • Cut
  • Dribble
  • Pass
  • Screen
  • Hand-off
  • Shot
  • Def. slide

Use Previous and Next beside the court, or choose a numbered step. Arrows on the court show where players or the ball move. CoachAssist drew this example; it does not show every way to run the scheme.

This box-and-one selects a perimeter scoring target. The chaser’s assignment and the four-player zone must remain separate. It is not a promise to stop a star or ignore the other four attackers.

In this guide · jump to a topic

Starting spots and player jobs

One chaser and a four-player box

X1 follows the selected scorer; X2 and X3 start high, X4 and X5 lower. The chaser does not take ordinary zone-help jobs. On a wing catch by another attacker, the near high defender takes the ball; the other high defender protects the middle and the lower pair accounts for inside threats.

Source-backed summary; versions may differ.

Keep all five connected

Give the four-player group its own practice feedback

Use separate observers for the chaser and the box. The chaser reports whether the target received comfortably; the other observer reports open shots or inside catches by everyone else. Review both before calling the defense successful. Let the target move without receiving, so the four zone defenders must keep working while attention is elsewhere. Finish each repetition with the shot and rebound; denial of one player is not the end of the defensive possession.

CoachAssist suggestion—not the source’s exact practice.

Read the next attack

Basketball glossary

Open full glossary page

What to emphasize

  • CoachAssist practice idea: have the four zone defenders practice covering the other players while one defender follows the selected scorer.

Find and fix the breakdown

The other four attackers score easily

Problem: The team celebrates denying the target but loses cutters and second shots.

Try this correction: Review possessions without showing the target first. Ask the box defenders to identify the first unguarded non-target threat.

Check: Measure ordinary shot coverage and rebounds alongside target touches.

CoachAssist suggestion—not the source’s exact practice.

The chaser joins routine help

Problem: The target becomes free while two defenders stop a non-target.

Try this correction: Replay the moment the chaser left and ask whether the four-player box already had a planned response.

Check: The next repetition preserves the declared chaser job rather than adding another unspoken rule.

CoachAssist suggestion—not the source’s exact practice.

Versions and diagram differences

Box-and-one versus diamond-and-one

Changes: setup, coverage.

  • A diamond arrangement changes the four zone jobs. It is not merely a new number for the same defender.

When to use it: Diamond-and-one is a written-only alternative here; its complete rotations are not displayed.

Written variant · this option does not have its own walkthrough here.

Source-backed summary; versions may differ.

How to teach it

Choose the level that matches what your players can do now. These steps work for boys and girls. Start simpler if players need more practice.

Build it at the right level

Follow one moving attacker

Set it up: Use one attacker and one guided defender with an adult passer.

  1. Let the attacker move between two receiving spaces.
  2. Have the defender stay aware of both player and ball.
  3. Switch roles without grabbing or face contact.

Add more when: The defender tracks movement safely.

Check it in play
  • Legal space.
  • No full combination defense required.

CoachAssist suggestion—not the source’s exact practice.

CoachAssist wrote these teaching steps. They are not an exact copy of any coach’s practice plan.

What can go wrong and how to adjust
  • It is not diamond-and-one. Extra attention to one scorer leaves fewer zoners covering the rest of the floor.
Coaches and teams that use it

We have not confirmed a specific coach or team using this version. Teams may use the same name for different plays.

Drills for this scheme · steps and diagrams

The level selector changes the teaching steps above. It does not change these drills. Check the number of players, equipment and difficulty before using a drill.

Deny and Recover
Court diagram · view the drill first

Basketball glossary

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Builds a skill used in this scheme: Develops the assigned defender denying a designated scorer’s catch and following cuts; it does not define the four zone defenders’ coverage changes or the assigned defender’s screen coverage.

A defender tracks a controlled backcut and re-establishes denial when the receiver returns.

3–12 players · 4–8 minutes · basketballs

Purpose

A defender tracks a controlled backcut and re-establishes denial when the receiver returns.

Set it up

At least three players rotating through attacker, defender and waiting roles, plus a coach passer. One ball and one cutting route at a time. Spare balls and waiting players stay outside the active routes.

Run the drill

  1. Agree on a short timed interval and begin at walkthrough pace. Use one active ball and one group in the playing area; add controlled opposition only when players understand the routes and can stop safely.
  2. Start with the defender seeing the ball and the wing receiver.
  3. On the coach cue, the attacker cuts toward available basket space while the defender opens and tracks the route legally.
  4. The attacker clears and returns toward the wing; the defender moves into a denial position without grabbing or riding the cutter.
  5. Stop after the route, then rotate or rest before another repetition.
  6. End the repetition on a controlled finish, dead ball or coach stop. Clear the ball and landing area before restarting; rotate roles and rest within the planned interval, without extending it to reach a target.

Scoring

Optional: within a short coach-chosen timed interval, count sound decisions, controlled catches or completed defensive possessions. Stop at the planned time or sooner; no required makes, winning streak or exercise penalty. Rotate roles and allow rest regardless of the score.

Coach the details

  • Maintain useful vision and legal spacing; do not turn the movement into a collision race.
  • A defender who loses position recovers toward a safe assignment instead of reaching through the cutter.
  • Use comfortable passing and shooting distances and an appropriate ball. Progress by demonstrated control, not speed: keep eyes on the play, leave stopping/landing space, and stop if a route or loose ball creates a collision risk.

Ways to adapt the drill

  • Original CoachAssist display adaptation: these edited steps, workload limits and optional scoring are coaching adaptations, not a claim that the cited author prescribed this exact version.
  • The teaching-level selector does not automatically adapt these drills for age or ability. A coach must choose suitable roles, equipment, contact, space and progressions; simplify or defer anything the group is not ready to perform.
Zone Box Out - Call the Numbers
Court diagram · view the drill first

Basketball glossary

Open full glossary page

Builds a skill used in this scheme: Practices zone defenders identifying attackers to keep away from rebounds. It is not an alignment drill for four zone defenders and one defender assigned to a scorer.

Two defenders communicate which of five numbered attackers to account for on a shot.

7–12 players · 6–10 minutes · basketballs

Purpose

Two defenders communicate which of five numbered attackers to account for on a shot.

Set it up

Seven players: five numbered perimeter attackers and two lane defenders, plus a coach shooter. Begin with a held or gently tossed ball and controlled, non-contact positioning before live rebounds. Spare balls and waiting players stay outside the active routes.

Run the drill

  1. Agree on a short timed interval and begin at walkthrough pace. Use one active ball and one group in the playing area; add controlled opposition only when players understand the routes and can stop safely.
  2. The coach names two attackers; defenders identify their assignment aloud and move into legal rebounding position.
  3. Only those two attackers approach the rebound area at the agreed pace; the other three remain clear.
  4. When the coach permits a shot, defenders maintain position without holding, shoving or undercutting, then pursue a safely available rebound.
  5. Stop if paths converge dangerously; reset and rotate the two defenders.
  6. End the repetition on a controlled finish, dead ball or coach stop. Clear the ball and landing area before restarting; rotate roles and rest within the planned interval, without extending it to reach a target.

Scoring

Optional: within a short coach-chosen timed interval, count sound decisions, controlled catches or completed defensive possessions. Stop at the planned time or sooner; no required makes, winning streak or exercise penalty. Rotate roles and allow rest regardless of the score.

Coach the details

  • Locate, communicate and establish position; do not hit or turn another player by force.
  • Keep landing space clear. Controlled positioning is the objective, not rewarding a harder collision.
  • Use comfortable passing and shooting distances and an appropriate ball. Progress by demonstrated control, not speed: keep eyes on the play, leave stopping/landing space, and stop if a route or loose ball creates a collision risk.

Ways to adapt the drill

  • Original CoachAssist display adaptation: these edited steps, workload limits and optional scoring are coaching adaptations, not a claim that the cited author prescribed this exact version.
  • The teaching-level selector does not automatically adapt these drills for age or ability. A coach must choose suitable roles, equipment, contact, space and progressions; simplify or defer anything the group is not ready to perform.
Sources and what we could confirm

The sources support the system guide. CoachAssist created the practice steps and checks; they are suggestions, not tested programs or a coach’s full playbook. The linked drills practice parts of the system.

The main ideas are supported by the sources below. These sources do not cover every possible version.

  • Junk Defenses and Defending a Star Player

    James A. Gels · Coach's Clipboard · publication date not listed

    Public written coaching reference; undated unless specified. No linked paid video reviewed.

  • Box and 1 Defense – Complete Coaching Guide

    Basketball For Coaches · Basketball For Coaches · publication date not listed

    Public written chaser and high-post coverage reviewed. Organization credited; no individual byline or publication date established. Exact numbered movements are original.

Box-and-one defense · Library of Schemes · CoachAssist