It always starts the same way. A quiet question at the end of practice. A whispered comment between matches at a tournament. Are we behind?

You hear it in the tightness of a parent’s voice. You see it in the way they scan the court, comparing their child to the kid two courts over who seems to hit harder, move faster, win more. The fear is real and it spreads quickly: that someone else’s child is further along, that a window is closing, that you have somehow already missed something irreversible.

But here is what more than two decades coaching in multiple countries has taught me. Your child is not behind. They are becoming themselves. And those are not the same thing.

Tennis development does not follow a timetable. There is no fixed age at which the forehand should click, the tournament wins should arrive, or the college offers should start coming in. There is only the player and the path they are on. Some find their rhythm at twelve. Others not until they are seventeen or eighteen. Both are real. Both are valid. And the ones who last are almost never the ones who peaked earliest — a pattern that research on elite athlete development has consistently confirmed, including a 2025 review published in Sports Health specifically examining junior tennis players. If you want to understand what the same research says about the physical cost of pushing too hard too early, Too Much Too Soon goes deeper into those findings.

The best players I have worked with did not grow in straight lines. They stumbled. They plateaued for months and then broke through in ways that surprised everyone, including themselves. What they had in common was not early success. It was someone who believed in them long enough to stop measuring them against a timeline that was never theirs to begin with.

So the next time you are sitting courtside and the fear starts creeping in, try shifting the question. Not how fast are they going, but what are they learning? Not where are they compared to others, but how far have they come from six months ago? The answers are almost always more encouraging than the comparison.

There is no finish line at age thirteen. There is no window that closes at fifteen. There is only the slow, uneven, genuinely fascinating process of a young person learning to compete. And that process cannot be rushed without cost.

Your child is not behind. They are just not done yet.