A kid who was the best player on the team in April can look lost by September — clumsy, slow, missing shots they never missed. Often nothing is wrong except four inches. Here's what the adolescent growth spurt does to coordination, why it's temporary, the injuries it makes more likely, and how parents and coaches should respond.
Here's a story every youth coach has watched: the best player on the team in spring comes back in fall three inches taller and can't do anything. Shots that were automatic clang. Footwork is a half-step late. The kid knows it, gets frustrated, and starts pressing. Parents wonder what happened over the summer. What happened is the summer.
During peak adolescent growth, the long bones of the arms and legs lengthen faster than anything else can keep up with. The nervous system is still running movement programs calibrated for a shorter body. Lever lengths change, center of mass moves, and the timing that made the jump shot work is now slightly off in a way the kid can't consciously fix. Researchers sometimes call this "adolescent awkwardness," and it's a real, documented phase, not a lapse in effort.
It's temporary. As growth slows, the body recalibrates, and the skill comes back — usually better, because it now runs on longer levers. The kids who come out the other side ahead are the ones who kept training through the dip instead of quitting during it.
Bones grow faster than muscles and tendons lengthen, so everything gets tight at exactly the moment the kid is running more. The growth plates — the soft areas near the ends of bones — are vulnerable during this window. That's why conditions like Osgood-Schlatter (pain below the kneecap) and Sever's disease (heel pain) cluster around this age. They're usually not dangerous, but they are real pain, and pushing through them is the wrong move. Pain at a growth plate means reduce the load and see a doctor if it persists.
Don't bench the kid for a temporary coordination dip, and don't read it as effort. Go back to fundamentals — the basics are how the nervous system relearns the body. Praise process over outcome for a few months. And watch for the kid who's limping or rubbing a knee between drills; they often won't tell you.
A note on recruiting, since someone will ask: this phase is one more reason early evaluations are unreliable and early specialization is risky. The thirteen-year-old who looks clumsy may be the one with the most growth left. Coaches who recruit at the college level know this. Families get told it less often.
This article is general information, not medical advice. Persistent pain in a growing athlete should be evaluated by a physician.