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← Library of Schemes

defense

Triangle-and-two defense

Two defenders each follow a selected scorer. The other three guard areas in a triangle. Gels starts one farther from the basket and two nearer it; against two guards at the top, he may turn the triangle around.

How it runs

Triangle-and-two: cover the corner with a lower defender

X1 follows scorer 2, and X2 follows scorer 3. The other three form a triangle: one high and two near the basket. Some teams turn that triangle the other way up.

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.

Three guard space; two follow scorersHalf court diagram, frame 1 of 3: Three guard space; two follow scorers. 10 players, showing pass, defensive slide.1234512345

Diagram 1 of 3

Three guard space; two follow scorers

1 passes to 4 in the corner. X5 moves from the lower right to guard 4. X3 starts high and moves toward the space X5 leaves beside the paint.

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 triangle-and-two selects two perimeter targets. Three remaining defenders share the zone jobs. It is not box-and-one with an extra chaser, and the high-post response is different.

In this guide · jump to a topic

Starting spots and player jobs

Two chasers, one high defender, two lower defenders

X1 and X2 follow the chosen targets; X3 starts high, X4 and X5 lower. For other attackers, X3 covers catches above the free-throw line and a near lower defender covers catches below it. The opposite lower defender protects the inside receiver and basket.

Source-backed summary; versions may differ.

Keep all five connected

Make three zone defenders account for real people

Run the triangle group first against three attackers while the two chaser-target pairs remain visible at the side. Ask the triangle defenders which two threats cannot be covered by the same person. Then add the moving target pairs without changing their jobs. Let the offense attack where the triangle is thinnest. Review whether the first closeout leaves a lower receiver free rather than assuming a three-point shape automatically protects the paint.

CoachAssist suggestion—not the source’s exact practice.

Read the next attack

Basketball glossary

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What to emphasize

  • CoachAssist practice idea: teach the three zone defenders how to move together. Separately, teach the two defenders following scorers how to get around screens.

Find and fix the breakdown

Players import the box-and-one middle trap

Problem: A chaser or lower defender joins X3 without an agreed coverage and exposes another target.

Try this correction: Walk the middle entry with all five named jobs visible. Compare it directly with the box formation on a separate repetition.

Check: Players can explain which defender no longer exists in the high line.

CoachAssist suggestion—not the source’s exact practice.

The lower pair loses the weak-side rebound

Problem: Both lower defenders follow the first catch and nobody identifies the far attacker.

Try this correction: Finish a short segment with deliberately varied shot locations. Ask the lower pair to name different opponents before the shot goes up.

Check: The target-chasing jobs do not excuse the triangle from rebounding.

CoachAssist suggestion—not the source’s exact practice.

Versions and diagram differences

An inverted triangle changes the lower coverage

Changes: setup, coverage.

  • Changing the triangle’s orientation changes who reaches high and low catches.

When to use it: An inverted version is a written-only lead, not a fully verified alternate rotation sequence on this page.

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

Track one player while seeing the ball

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

  1. Move the receiver between open spots.
  2. Have the defender show where the ball and receiver are.
  3. Alternate roles and avoid holding.

Add more when: Tracking works without staring at only one object.

Check it in play
  • Safe body position.
  • Small, manageable passing distances.

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
  • Clarify the orientation and assignments. A loosely named triangle defense is not necessarily triangle-and-two.
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 following cuts for each defender assigned to one of the two designated scorers. The drill has only one attacker-defender pairing and does not install either triangle orientation.

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: Supports zone defenders communicating rebounding assignments; it does not supply the coverage changes for three zone defenders and two defenders assigned to scorers.

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.

  • Triangle and 2 Defense – Complete Coaching Guide

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

    Public written two-chaser and middle-entry responsibilities reviewed. Organization credited; no individual byline or publication date established. Geometry is original.

Triangle-and-two defense · Library of Schemes · CoachAssist