It doesn't matter. I come from a sports background, too. As long as your comprehensive quality can keep up, it is still a good thing. Don't try to thin the calf. I want to thicken other parts of your body, such as thighs and upper body.
You are now 15 years old, 12. The score of 7 is good. If it develops well, senior three should be able to reach 1 1. About 3 o'clock.
Good luck.