Tim Grover spent more than two decades training Michael Jordan, Kobe Bryant, and Dwyane Wade. Three of the most obsessive competitors the game has ever seen.
And after all that time, he noticed something that changed how he thought about talent.
It wasn’t the gap between great and average that fascinated him. It was the gap between great and relentless — and why only some players ever crossed it.
He called it the Cleaner/Closer/Cooler framework. Once you understand it, you’ll see it everywhere in your gym.
The Three Tiers
“Cleaners don’t need to be told what to do. They know. And they can’t stop — even when there’s no game.” — Tim Grover, Relentless
Coolers are solid players who do their job — but they wait to be told. When the game gets hard, they look to the bench. When the environment turns bad, their performance drops. They need the right conditions to perform. Good teammates. Fine players. Not the ones you’re counting on when it matters most.
Closers can deliver under pressure. They’ve prepared. They’re confident. They’ll take the big shot when the moment calls for it — but they need momentum, a timeout to reset, or a role they’re comfortable in. Most elite players operate at this level. It’s a very high bar.
Cleaners are different at the operating system level. They don’t wait for right conditions — they create conditions. They don’t run on external fuel. They’re the ones who show up harder after a bad game, not softer. Grover observed that Cleaners don’t know how to stop, even when there’s no game, no crowd, and no coach watching.
Michael Jordan. Kobe Bryant. You probably have a feel for what that looks like.
How to Use This as a Coaching Tool
The mistake is deploying this as a ranking system. Don’t pull your players together and announce which tier they’re in. That creates resentment and doesn’t help anyone get better.
Use it as a private diagnostic.
When something goes wrong — a blowout loss, a losing streak, a bad call — watch how each player responds at the next practice. Who comes in quieter and more focused? Who needs to be rallied? Who shows up early and just works?
We had a point guard who was our most talented player — smooth, confident, great in practice. We got blown out by thirty one night and I expected him to come in the next day fired up, with something to prove. He didn’t. He came in quieter than usual and asked to get in early shooting work before anyone else arrived. Didn’t say a word about the loss. Just worked. That told me more about him than any game he’d ever played.
What you’re watching for isn’t effort — it’s the inability to stop. The player who’s in the gym when there’s no coach there to see it is showing you something about their operating system.
The Question to Ask Instead of the Label
Not “which tier are you?” — that’s a label, and labels shut down growth.
Ask this instead:
“Which tier are you performing at right now — and what’s the gap to the next level?”
That’s a development question. And how a player answers it tells you almost everything about their basketball mental toughness.
The Cooler will tell you they’re already a Closer. The Cleaner will tell you what they’re working on.
Building Mental Toughness Through Your Environment
You can develop Cleaner-tier habits even in a player who doesn’t naturally show them. Three approaches that actually work:
Put them in self-directed situations. Design drills where there’s no coach calling the right move. No timeout in a game will solve a defensive breakdown for them. Their mental model has to run at game speed without your voice guiding it.
Celebrate the process, not just the outcome. The player who asks the hard question in film, who stays late without being told, who holds a teammate to the standard without being asked — acknowledge those things publicly. Culture follows what you celebrate.
Track response patterns over time, not one moment. Don’t evaluate mental toughness on a single game. Watch the pattern across the season. The players who consistently show up more focused after every setback are your developing Cleaners.
The Pitfall to Avoid
Grover is careful about one thing, and I want to be careful about it too: the “some people are just built that way” read.
Don’t let that close off your coaching effort for your Closers.
Plenty of players develop Cleaner-tier habits over time when the environment demands it and the coaching supports it. The tiers are a diagnostic lens for where someone is right now — not a ceiling.
Frequently Asked Questions
What is basketball mental toughness? It’s the ability to maintain high performance through adversity — not just in crunch time, but consistently, when conditions aren’t ideal. It shows up most clearly in how a player responds after a setback, not just during the big moment. A player who raises their standard after a blowout loss has mental toughness. A player who shrinks does not.
Can you teach mental toughness to athletes? Yes — but not through speeches. It’s built through designed adversity in practice: situations where players have to self-direct without coaching input, respond to setbacks without a rally cry, and hold a standard when no one’s watching. The environment develops it. The talk just frames it.
How do you identify mentally tough players in tryouts? Watch how they respond to correction, not how they perform when things are going well. The player who takes a correction and immediately adjusts — without sulking, without making excuses — is showing you something real. Also watch the last five minutes of the hardest drill you run. Who’s competing the same way they competed in the first five?
What’s the difference between confidence and mental toughness? Confidence is believing you can execute. Mental toughness is continuing to compete when execution breaks down. A confident player performs well when they’re playing well. A mentally tough player competes the same way regardless of how the last possession went.
How do you coach a player who quits when things get hard? Start smaller than you think you need to. Put them in situations where they can succeed under mild adversity first — not maximum pressure. Gradually increase the difficulty. The player who “quits” under pressure usually does so because they’ve never been taught to expect adversity and work through it. They’ve only ever been pulled from situations when they start to struggle.
Related Reading
- Basketball Team Culture: What Your Players Do When You’re Not There
- Shooting Confidence: Why the Mental Game Matters
- The Coachability Question Phil Jackson Asked at Every Training Camp
- How to Improve Basketball IQ
Go deeper: Get the full system in Youth Basketball Coaching: Practice Drills for Ball Toughness — available on Amazon in paperback and Kindle.
