When the 2001 New England Patriots ran out of the tunnel as a team (instead of an offense or a defense) prior to the Super Bowl and proceeded to defeat the star-studded St. Louis Rams, a new era of team football had begun.
Never before had the concept of team taken such center stage. While many NFL players make their teammates better players, there are a stubborn few who bring their teams down.
These players are very talented, but their baggage prevents them from going to teams. Other players don't want to have these guys as teammates.