A dedicated player willing to work hard, learn the things they need to learn, and practice smartly can easily raise their game by much more than 50 points if they are committed to improving. For example, I have seen many dedicated players advance from 400 level to 550 level within a couple of years after putting in the necessary work. "Natural talent" and "starting young" are certainly factors, but I think they are often grossly overrated.
Now, going from 650 to 800 is another matter entirely. You need to have
everything it takes to play like a top pro to do this.
