@Curious have you heard or tried "shrimp squats" before? When my groin heals I'm gonna start doing them.
Imo calves are a lot to do with genetics, they may grow from playing tennis naturally but so will the rest of the leg. I think it's not as much bang for your buck doing calf raises vs something like unassisted shrimp squats (which is the entire leg basically).
Also check out zverev, super skinny everything but he's a great mover and a relatively uninjured guy for being so tall. Super skinny everything, but big ass quads. He would be doing all the most functional exercises possible, so imo quad size is a more relevant gauge of how strong and injury proof your legs are. Especially how much muscle meat hangs over above your knee cap when your leg is relaxed