1. I think it would be better if the back button in a player stat's window is moved to the top right instead of the current position on the top left.
When I view someone's or my stats, a lot of it is to just look at previous games they played. Constantly moving my mouse to the top left to see their next game is not very efficient.
2. I also believe the last game you viewed should be highlighted to make navigation easier in viewing games.