So anything over 55-60 minutes, would mean a lower practice rating? If this is the case, it seems a bit low. If your best players start one game and perform well, that would mean close to a max of 48 mins from just one game. That would mean they could hardly play in the next couple games. If they do play and do well then the minutes will go well over 60 mins. In my first game played, my team did very badly yet the starters still played 30-40 mins.