Several schools our son was interested in, including the school he committed to, use swimming for recovery. Most here are misinterpretting the level of water training. I am a former swimmer and former swim coach. An elite swimmer, especially distance swimmer, risks shoulder injuries. Aquatic training for pitchers is more for recovery. Many use aqua belts and do specific exercises. We are not talking swimming high quantity laps on an interval. There was a good article about UF using swimming with their pitchers on their website. Their strength and conditioning coach even had one of his pitchers train in the water during the summer at Cape Cod. I know that Auburn and Stanford use some swimming as well. I'm sure there are others.