Bill Belichick has consistently been one of the best coaches in the NFL. With quarterback Tom Brady by his side, Belichick has helped lead the New England Patriots to five Super Bowl wins over the last two decades. By now, Belichick has seen it all and will be more than well-equipped when the Patriots take on the Kansas City Chiefs on Sunday in the AFC Championship game. Despite the experience, Belichick still gets nervous before all of the games.

"Yeah, every week. They all count in this league," Belichick said according to ESPN. "Just let me know the next game that doesn't matter, so I can take that into account."

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It's not just the big playoff games that get Belichick nervous, but pre-season games as well. An interesting revelation considering pre-season games don't mean anything.

"Just let me know the ones that don't matter, I'll make sure I don't get excited for those," he said. "Nervous? Sure. You want to go out there and do well. There's an anxiety. We all have things in the game that we have to do. You want to perform them well, not let your team down, because everyone is counting on you to do your job, and you're counting on everybody else to do theirs."

Belichick will be coaching in his 13th AFC Championship game on Sunday which is an NFL record. Belichick and the Patriots are 804 in those games.