Congratulations on setting your radar high enough to avoid the ground clutter. It's a safe rule of thumb to protect your family against anything that tries to quantify them.
You want 100% of your son's motivation to improve to be coming from
within. Rankings are a distraction at best. At worst, they can derail his natural personality growth and sense of self. Everybody knows the main task of adolescence is to answer the question "Who am I?" You want your son to have the normal, natural struggles to answer that question. You don't want him tempted to take the short cut that so many have: "I know who I am--I'm the 3rd ranked PF in my region!"
If his rankings become part of his motivation, he's getting into a bad place where he can begin losing the fun of the game, and burnout becomes a looming possibility down the road. It's like the junior tennis syndrome, which changes parents as well as the players.
Two maxims that might help him retain a healthy focus in the midst of this swirl of attention, that sounds like will only grow larger and louder:
Only compete with who's on the court with you, and on the other team.
Compare yourself to who you were yesterday, not to who someone else is today.*
*Jordan Peterson's 12 Rules for Life: An Antidote for Chaos
