I am deaf in one ear and played college tennis. I happen to be half-Korean also. I have known for a while that due to my deafness my balance is worse than the average persons and that is one scenario that is not mentioned in the article. I fail conventional balance tests where you close your eyes and have to stay up. I never thought about the sound of my opponents ball meaning anything as I couldn't decipher it clear enough to learn anything from that, but that might be useful. This article has made me realize that perhaps being deaf helped me with tennis. Perhaps it helped me read the game well as I had to rely on my vision and perhaps it resulted in me having better reflexes than I would have had if I wasn't deaf. I did have the best reflexes on the team fwiw but that's a small sample size (12 players). I struggled to hit overheads well compared to players at my level. I would feel disoriented when the ball was in the air and I was looking up and would be praying that my smash would go in lol. I felt I had less control over that shot compared to the people I was playing. I hope you might find my thoughts insightful on a small level :)