I wonder if the "tiredness" is the cumulative effect of playing all those games every year. Maybe mental tiredness as well as physical. It did hurt the team that there was no bench that could change the way the game was played. The championship team had Corliss and Memo and James. The past couple of years prior to this season, the bench was really weak. There are many factors one of which is the "switch" thing and competition adjusting to Pistons play.