Your child would play their sport all day, every day, and talk about it through dinner. This is a shelf for exactly that child: a soccer game in the rain, Michael Jordan when he was the shortest boy on the court, Venus and Serena on the public courts in Compton, baseball, roller derby, track, basketball, and figure skating. Any single one satisfies the whole thing, so pick by your child's age and by which sport they're mad about.
Every book here is for the same child, the one who cannot get enough of their sport, and they come at it from eight different angles, which is the point of a shelf. There's a soccer game for a three year old, two picture biographies for a child who wants real heroes, a baseball time-travel story for a reluctant eight year old, roller derby in comics, track and basketball for an older child who can take some weight, and figure skating for a child working out who they are. You reach for the one that fits the child in front of you tonight, and the sport is usually the fastest way to choose. What runs across the whole shelf is honesty about the work: nobody in these books is naturally gifted and finished. They all grind.