The Broncos continually fail to both score and prevent scores in the first quarter, setting the team up for an uphill battle late in the game. Heading into the half, the Broncos were only able to score a field goal and touchdown, far behind the 20 points the Raiders had put on the board.
The penalties racked up late in the game for Denver. To the tune of over 10 penalties for over 100 yards. That's insurmountable, unless the team is the Raiders, which had 23 penalties one week prior and managed to win.
But to a fledgling offense that needs every break it can get, and to a defense which needs to shore up its weaknesses, it's unacceptable.
4.) Nagging injuries.
Of course having Aqib Talib out hurt the Broncos, as the Raiders picked on Bradley Roby who served in his stead. But also, nagging injuries impacted others, like Brandon Marshall, who exited the game for several plays.
Importantly, the Broncos also lost Shane Ray, who had to be carted to the locker room, but was able to walk to the sideline on his own power.
It increasingly became easier for the Raiders to move huge chunks of yards as the defense wore down through the night.