You just now noticed that?
I have twins playing on my team. Both very sweet kids, but completely different personalities. Their dad is constantly trying to offer "advice" during games. The one twin becomes noticeably upset but does her best to try to hide it. The other doesn't seem affected by it at all. I asked her during one game how she was able to tune him out so effectively. Her response "Oh, did he say something to me? I didn't hear him". Just found it interesting how differently they handled the situation...