Last season the Raiders had four games that started at 10am Pacific time. But at no point last season did the Raiders change their practice schedule to try to acclimate to playing at an earlier time. They would lose all four of those early start games.
It’s proven that you perform better when you take the test at the same time as you learned the information. And your bodily clock is very real. Practice when you play and you’ll be better off. Gruden didn’t subscribe to that last season and it may have had his team ill prepared for the game.