Believe it or not D-1 teams hold these things called "practices" before their games. They don't just show up at the games like your rec league team, they actually play together beforehand to try to improve their team and indvidual skills before and after their games.
Now, I'm not saying I believe Uthoff is the best player on the team, but if he were there's no reason people close to the basketball team wouldn't be able to tell this from one of these "practice" sessions. Now I know this probably sounds really crazy to you too, but there were people at Iowa St last year who felt Royce White was their best player before he had seen the floor in a single D-1 game, crazy right?