Tennis is another high-barrier sport in that the vast majority of people will need professional coaching to get to an elite level because that's what you're up against. Other than Mr. Williams and his two mega athletes, they're not coaching tennis in low SES environments and the kid who knows how to play is going to eat up the natural athlete who doesn't really know what they're doing.
In my yute, I was 50X the athlete Mrs. creep was relative to gender. Mrs. creep was an all-state tennis player. Other than the occasional hard serve I would accidentally come up with here and there, she mostly had me running all over the court knocking balls out of play all over the place. Made a fool ole creep.
You gotta start tennis young if you plan to play D1 at some place anybody has heard of.