How old is he? What level?
This is going to sound hard to believe, but he is 18, has only played for 1.5 years, bypassed high school tennis (combination of covid restrictions and the coach being apprehensive about giving a "beginner" a fair shot against his favorites) and now plays for a local junior college that has a great tennis tradition, with a good chance to play at a good 4 year school, maybe even a good D1.
He was a good basketball playeri n high school but basketball kind of abandoned him and he asked me (I am a former Pac-12 player and D1 coach who coninued to play competitively into my late 40s) if I could teach him to play tennis. So I did my best to do that using ball machines and creative training techniques and whatever wisdom had accumulated in my old brain, and he responded so well (10 hours a day will do that; he loves to work hard) that it wasn't long before I felt he needed professional reinforcement that was beyond my ability (I've had health issues that prevent me from playing myself).
He is also a great student of the game, watches a lot of classic matches on video to figure out what players did and why they did it. So anyway, he does not surrently have a UTR rating cus UTR just isn't really a thing where we live, but last year the y had him at an NTRP 4.5, I'd say at the moment he is likely a 5.0 or thereabouts. He is certainly better than I ever was. I would describe him as an aggressive all court player whose key shots are reliant on power and precision. Great serves (he is 6'4",) two handed backhand, natural flat baller, great instincts, no fear.
No, he's not the savior of American tennis, but it wouldn't surprise me at all if he has some kind of future in tennis beyond college, whether it be playing, coaching or whatever. Nice thing about having only played for a year and a half is that there isn't much chance of burnout like with some kids who have been playing long and hard since they were 3.