Imagine the scenario. Two juniors on the sand. The smaller one serves short into the middle. Both stay back. The opponent picks a corner and lands one in the empty front court. Easy point.
“One of you, up!” I call out after the rally. They glance back at me with blank stares.
Two rallies later, her partner serves. Both back again. This time the opposing reception comes off the arms badly and floats back across the net — nobody is there to attack it, and it drops on our side on the first touch. Another point against us.
I have been telling these two the same thing for four weeks. The cones are out. I have drawn the diagram in the sand. I have given the speech about pressure at the net — first calmly, then with what I’d call professional irritation. It works for two points. Then both back again. Always both back.
For most of those weeks I assumed the problem was in them. They weren’t listening, or they were too cautious, or they hadn’t internalised the tactics yet. I would have told you, if you’d asked, that I was working on it.
Eventually I had to admit something less flattering. They were doing the thing that made sense from where they stood. Both back is the safer choice — maximum reaction time, no decisions to make. And in any given rally, the punishment doesn’t come labeled. The opponent picked a corner. Their reception slipped over and nobody was there for it. The hitter timed it well. Each rally has its own visible reason for the loss, and none of those reasons say you should have been at the net. When both-back works out — the hitter mishits, the opponents lose the rally on their own — that doesn’t tell them anything either. The local picture — this rally, this hitter, this set — keeps telling them staying back was fine.
What the local picture hides is the aggregate. The set that drifts over the net and lands, with nobody up to put it away. The set so tight even a low block would be better than no block. The way the hitter takes their time when they know nothing is up there, picks a corner, takes a free swing. A blocker doesn’t have to make contact to do work — just being there changes the opposing setter’s set, the hitter’s swing, the shape of the rally. None of that gets credited to the blocker in the kid’s local picture. Over a session it adds up and costs them. Within any single rally, it’s invisible.
They had also never felt what was good about being at the net. They’d been told. That’s different.
The issue wasn’t that I needed to tell them better. The issue was that telling — any amount, any tone, any volume — was the wrong tool. So I changed the game instead.
The session
Below is the session — five steps, one court, about an hour. Same court, same kids, different rules. I said nothing about positioning.
A note before you start: if you haven’t already watched the team default to both-back in match play, run 5–10 minutes of normal 2v2 first, with no constraints and no coaching. You need a baseline — and you need clean data to ask honest questions about it later. Once you’ve coached, you’ve poisoned the well.
1. Net touches pay
Normal 2v2 from serve. One rule: if a net-side player on your team touches the ball before you win the rally — block touch, redirect off the hands, anything legal — the point is worth double. No instruction about who goes forward, no technique input, no diagram. Just: net involvement pays.
2. Front space is expensive
Keep 2v2. Add a rule on top of the first: if the receiving team wins a rally with the ball landing in the front third, two points. Both staying back becomes actively expensive — the front court is open and the opponents can see it. The serving team has to solve that problem itself.
3. Pressure zone
Mark a zone roughly 2–2.5m from the net. Bonus on the rally if, by the moment the opponent’s setter touches the ball, one of you is in that zone, and the team either wins or forces an easy ball. “Pressure success” isn’t only blocks — it’s a hitter forced into a roll shot or a pokey instead of a clean swing, a high easy ball back, a defender digging because the front player changed the angle.
4. Triple ball, with a one-touch rule
By the time the first three constraints have done their work, the kids are functional in serve-receive — non-server up, server defending. But junior rallies usually end at the serve — service error or ace. The ones that survive the serve usually end at the first attack. Either way, the transition problem — both players have moved during the rally, the rule no longer tells anyone who’s up — never surfaces, because the rally never gets there.
Triple ball is the standard fix for that. After the served rally ends, the coach feeds extra balls into play to keep practice going past the natural junior endpoint. By itself, it just produces more reps.
To make those extra reps surface the transition problem specifically, layer a rule on top: when the coach throws the free ball to one side, that side gets one touch only. They have to send it back over, not set up a proper attack. The other side, having received a clean ball, sets up and attacks back. The one-touch side now has to defend that attack — the same front-court / back-court work they’ve been learning in serve-receive, except neither player was pre-positioned for it.
What surfaces in the second-ball play is the transition problem: both players moved during the one-touch return, neither is pre-positioned for what comes back. The convention that worked at serve-receive (non-server up) doesn’t tell them who blocks this attack. They have to find another way.
The “another way” depends on how the team blocks. With a designated blocker, it’s trivial — the blocker blocks. With split blocking, a common convention is that whoever just attacked stays forward and blocks the counter; they’re already moving toward the net. Which rule the team picks matters less than that they pick one — and that both players know it before the rally starts. The constraint surfaces the question; the convention is the team’s answer.
5. Fade the rules
Remove the bonuses. Play normal 2v2 — no commentary, no corrections, no scoring tweaks. Watch whether someone goes to the net without being told. The silence is part of the test: any coaching now puts the question back in the verbal channel the whole session was built to escape.
That’s the session. The numbers and bonus sizes are mine — adapt them to the level you’re working with.
Within a few rallies of the first constraint, the smaller one started drifting toward the net when her partner served — when she was the non-server, the one whose job it is to be up. Not committed. Looking back at her partner, looking at me to see if I was going to say something. I wasn’t.
A few rallies later she was at the net when the opponent attacked. She got a hand on it. Her partner dug what came off. They won. Double.
By the third or fourth time we ran the serve-receive sequence, both of them were going up after their teammate’s serve without thinking about it. Server back, non-server up — the convention they’d been told a hundred times, now happening because the game rewarded it.
How I talked during the session
I said little during play — the constraints did most of the work. What I did say was questions, mostly between games rather than inside them.
Instead of you’re standing too far back: where did the ball want to go — could you have reached it from there?
Instead of watch the hitter’s shoulder: what was she showing you before she hit?
Instead of good block!: what did you see that told you to commit?
Instead of one of you, up! — nothing. The scoring asked the question for me.
The questions take longer than commands. They don’t fix the rally we just played. They are a worse tool for winning the next point. They are the only tool I know for the rally a month from now, when I’m not standing there.
What this doesn’t do
Some kids don’t go forward in session one. Or three. The pattern has variance.
Sometimes both staying back IS the right answer — weak attack, scramble, somebody is gassed. The goal isn’t a rule, it’s a read.
This doesn’t teach blocking technique — hand shape, jump timing, reading the setter’s hand. Separate problem, separate session. What the constraint games teach is the wanting to be there. Everything else assumes the wanting is free, and it isn’t.
Triple ball is moving more slowly than the serve-receive constraints did. The non-server up rule that resolved the easier case doesn’t tell them what to do once the rally has extended past first attack, and the constraints that DO work in that second-ball world are still taking sessions to figure out. The alternative — telling them what to do mid-rally — won’t survive any better than telling them what to do at the start did.
The constraints were not the hard part. Being quiet long enough for them to work was.
Further reading
What you just read has a name in the literature — the constraints-led approach, commonly abbreviated CLA, and one strand of the broader nonlinear pedagogy. The body of the post never needed to say so; you don’t need the term to run the session. But if you want to read your way in, the practitioners below are the doors I’d walk through first.
Practitioner-friendly starting points:
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Rob Gray runs The Perception & Action Podcast and has built the single best entry point on the web for coaches who want to read about skill acquisition and the constraints-led approach. His CLA Resources page is the place to start. His book How We Learn to Move turns the same material into a coach’s manual; there’s a useful review on Coaching Volleyball that explains who it’s for.
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Mark Lebedew writes At Home on the Court, the most CLA-aware volleyball coaching blog I know of. A representative piece: “Coach’s Rules or Game Rules?”
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John Kessel has been writing the “Stop Teaching” series for USA Volleyball for over a decade — same sensibility as everything above, from a practitioner who pushes against drill-based instruction and toward game-based learning. The provocative titles are deliberate; each piece challenges a specific conventional coaching habit. A few entry points:
If you want to go deeper into the source material:
- Renshaw, Davids, Newcombe & Roberts (2019) — The Constraints-Led Approach: Principles for Sports Coaching and Practice Design (Routledge) — the practical book on applying CLA in real coaching contexts.
- Karl Newell (1986) — Constraints on the Development of Coordination — the original chapter that laid out the task / environment / individual taxonomy. Foundational. Dense; read after a practitioner intro.
- Gabriele Wulf (2013) — Attentional Focus and Motor Learning: A Review of 15 Years — meta-review of external-focus research. Why “deliver the ball to the antenna” works better than “raise your elbows.”




