Week 1 of NFL regular season definitely entertained fans with some huge moments and some downright shocking plays. From the Bears’ impressive upset of the Indianapolis Colts to the “He-done-it-again” winning performance of Jets QB Brett Favre, Sunday did not disappoint. That is, unless you’re a New England Patriots fan.

The New England win margin was low this past Sunday, only topping the Kansas City Chiefs by a touchdown in their 17-10 win. The reason for the low margin? The injury to Tom Brady. With the leader of the Patriots sidelined, the potent Patriots turned their trust to Matt Cassell who ultimately led the Patriots to victory.

But fans and players are concerned about the extent of the Brady injury. After Chiefs safety Bernard Pollard collided with Tom Brady’s knee in the first quarter, Brady left and never returned. Word about the injury in the Patriots’ locker room is guarded at the moment, but NFL Network’s Adam Schefter reports that the injury is season-ending. It is not confirmed at the moment, but it is believed that Brady may have torn his ACL, a particularly bad type of leg injury to any football player. However, Brady will undergo MRI scans on Monday to determine the extent of the injury.

For the Patriots and Cassell, on the other hand, the show must go on and the players will need to find leadership in Cassell.

San Diego Chargers were on the receiving end of some good news about their AFC Championship game against the New England Patriots when their prized running back LaDainian Tomlinson returned to practice.. The Chargers came out victorious in their game against

Tomlinson’s return was a huge boost to Norv Turner. Fellow teammate and quarterback Phillip Rivers suffered a sprained medial collateral ligament in his right knee. The quarterback is deperately anxious to return for their game against the undefeated Patriots, but his status for the game is questionable. Star tight end Antonio Gates did not practice for an entire week before the recent game against the Colts, and may do the same for the Patriots game. Quarterback Billy Volek could be handed his first start since 2005 after a promising performance by against the Colts .