Being happy for someone else is a skill, and we practice it
We see this constantly. A child is hanging back, not sure they can do the thing, and another child says their name or tells them they can do it. Then they do it.
It is not subtle either. The energy of the whole group lifts, the session gets louder, and everybody has more fun, coaches included.
That is what we mean by sportsmanship at Mini Me Sports: being genuinely glad for the child next to you, and building them up out loud.
Here is why it counts as a skill instead of good manners. It asks a three year old to notice that another child did something, feel good about it, and say so, all while they are still standing in line waiting for their own turn. Being happy for someone who just got the thing you want is hard for adults. It is a real ask at four.
And it has to hold no matter what. Whether the other child got it on the first try or the tenth. Whether they are your favorite person that day or not. Whether you are having a good session or a rough one.
So we build it into the session. We use names. We ask them to clap for whoever is up. We notice out loud when a child encourages somebody without being asked. We end every session with the whole group yelling the cheer together, so the last thing they do is something they do for each other.
Here is what to try at home.
Be happy out loud for someone who is not your child, while your child is standing there. A sibling who finally got their own shoes on, a friend at the park who lands something. Say what they actually did instead of "good job." Children pick up the noticing first, and the words come later.
Your child is more likely to build somebody up if they have watched you do it.