defense
Gallo's aggressive 2-3 emphasizes disrupting catches and forcing difficult two-point shots. Guards move toward the basket against drives, position between the ball and receivers near the free-throw line, and take over perimeter receivers from forwards so those forwards can return toward the basket. The center has a separate job containing catches near the free-throw line.
The public Joe Gallo interview describes wing handoffs in an aggressive 2-3 zone. This opening illustrates those jobs; it is not a full Merrimack rotation chart.
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.
Diagram 1 of 4
Meet the pass to the wing
1 passes to 2. X5 moves up from the lower right to prevent an open shot. X2 calls out while moving over to take 2.
Diagram key
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.
Clips may use a different version. Check each match note; links open in a new tab.
The Zone Defense That Eliminates Threes
By hoopvision68 · Coach: Joe Gallo
Merrimack film analysis: how Joe Gallo's zone limits threes, with Gallo explaining the high-low coverage. Also compares other teams' zones.
The player loads only after you choose play.
Source: Hoop Vision: Merrimack zone defense analysis
Link reviewed 2026-09-08
How Joe Gallo Guards Common Actions in His 2-3 Zone Defense!
By Championship Productions · Coach: Joe Gallo
Joe Gallo teaches coverage of common actions in his Merrimack 2-3 zone. This is a public clinic preview; the full course is sold separately.
The player loads only after you choose play.
Source: Championship Productions: Joe Gallo zone defense clinic excerpt
Link reviewed 2026-09-08
Merrimack College - "No 3s" Zone Defense
By Slappin' Glass · Coach: Joe Gallo
Merrimack zone film breakdown covering slides, stunts and peel switches. This is a public teaser; the complete breakdown requires membership or purchase.
The player loads only after you choose play.
Source: Slappin' Glass: Merrimack zone defense public preview
Link reviewed 2026-09-08
Limited public scope: this is not a complete Merrimack installation. Gallo’s public interview and clinic outline do not establish every drive, skip, overload or baseline rotation. Paid instruction was not reviewed.
Joe Gallo describes a 2-3 matchup with guard-forward exchanges, forward pressure on outside catches, guards helping against drives and fronting the high post, and a central “goalie” role. Our example selects a lower defender meeting a wing until a guard takes over; it does not supply the missing branches.
Source-backed summary; versions may differ.
Before using the team name in practice, write two columns: rules established by reviewed instruction and decisions your staff still needs to resolve. Include a quick reversal, a drive before the exchange, a baseline receiver and an overloaded side. Leave an unresolved row blank. A generic zone response can be taught separately, but label it as your own choice rather than filling a gap in Gallo’s system by assumption.
CoachAssist suggestion—not the source’s exact practice.
When: The lower defender meets the catch.
Do this: The guard takes over before that defender returns lower.
Then: The example restores coverage after a return pass; it does not authenticate every continuation.
Source-backed summary; versions may differ.
When: A drive, skip or overload goes beyond the public example.
Do this: Stop the teaching repetition and identify the exact unanswered job.
Then: Use a separately named generic coverage already taught by your staff, or obtain the original coach’s instruction before claiming a Merrimack answer.
CoachAssist suggestion—not the source’s exact practice.
Problem: Players are told to “play Merrimack” but cannot say who takes the next receiver.
Try this correction: Ask each defender to explain the current exchange in ordinary words. Remove the scheme label from the drill until that small task is clear.
Check: A player can identify both the incoming and released defender.
CoachAssist suggestion—not the source’s exact practice.
Problem: An improvised response works once and is described as Gallo’s rule.
Try this correction: Record it as a staff proposal with its starting conditions. Review whether it also handles a different pass before adopting it locally.
Check: The attribution remains narrower than the team’s own experiment.
CoachAssist suggestion—not the source’s exact practice.
Changes: coverage.
When to use it: The displayed exchange is available; additional Merrimack versions remain unverified, not secretly included.
Written variant · this option does not have its own walkthrough here.
Source-backed summary; versions may differ.
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.
Set it up: An adult guides one stationary attacker and two defenders with generous space.
Add more when: The exchange is clear without hurried movement.
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.
The 2020 interview excerpts and clinic outline describe this aggressive zone. The full audio and paid video were not reviewed.
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.
Practices this scheme: The documented five-defender communication rehearsal prepares Gallo’s assignments at controlled movement speed.
Practice calling every defensive job while moving at a controlled pace.
5–15 players · 5–12 minutes · basketballs
Practice calling every defensive job while moving at a controlled pace.
Five defenders use the team’s zone alignment; a coach indicates ball locations. Spare balls and waiting players stay outside the active routes.
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.
Practices this scheme: The documented five-defender/eight-attacker drill tests connected Gallo zone responsibilities against extra attackers; retain the full thirteen-player requirement.
Rehearse zone communication against eight stationary passing targets.
13–39 players · 5–12 minutes · basketballs
Rehearse zone communication against eight stationary passing targets.
Thirteen players: eight stationary passing targets at point, wings, corners, high post and short corners against five zone defenders, one ball. Targets hold their spaces; this is not eight cutters attacking the same lane. Spare balls and waiting players stay outside the active routes.
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.
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.
Joe Gallo · Championship Productions · 2020
Public instructional outline read; paid 79-minute clinic not reviewed.
Joe Gallo, interviewed by Chris Oliver · Basketball Immersion · 2020-09-09
Published interview excerpts and topic index read, not full audio.
