Throwing for 400 yards in an NFL game used to be next to impossible. Offenses were built on a running game http://www.seahawkscheapshops.com/cheap-authentic-phil-haynes-jersey , and teams rarely stretched the field. Rules also used to favor defenses far more than they do now, so big plays were few and far between. The game of football has completely changed now though, as the rules heavily favor offenses. Jams at the line of scrimmage are rarer, any tug is usually called defensive holding and coaches have drawn up more sophisticated offenses, allowing their quarterbacks to throw far more passes than they ever have. We also can't overlook just how freakishly athletic receivers are today compared to 30 years ago.These all factor in to why a lot of quarterbacks are able to routinely throw for over 400 yards a game. It's not just the elite pivots of the league that do it either. Once in a while, you'll see a QB who's struggled most of his career come out and shock the world by making big play after big play.Today, we're going to look at some quarterbacks who by all accounts were very mediocre to average quarterbacks but managed to find that anomaly of a day where they looked like stars at the position. A common theme of this list is that the player wasn't able to do it again, or they still lost the game despite throwing for 400 yards.Here are the worst QBs in NFL history who managed pass the 400-yard mark in a single game. Offseason Christmas came earlier this week as the NFL released its schedule, and NFL fans are now circling the top games on their calendar Ugo Amadi Jersey , while planning trips to see their teams play.Every year, we get a bunch of awesome NFL games. But we also know some of the most intriguing games don't pan out. Such is life, but we actually, in my opinion, have the most loaded-looking NFL schedule in years.The league's toughest division, the NFC West, faces the much-improved AFC West. The NFC East, home to four legendary NFL Franchises, will face the AFC North Christian Wilkins Jersey , which features three Super Bowl contenders: The Baltimore Ravens, Cincinnati Bengals, and Pittsburgh Steelers. What more can we complain about?Also, we'll see rare quarterback matchups like Andrew Luck vs. Aaron Rodgers, Tom Brady vs. Carson Palmer, and Tony Romo vs. Ben Roethlisberger. Sunday Night Football has stacked up the most intriguing matchups and will give us NFL fans a treat to watch late at night.And nothing is better, of course, than opening night. The Denver Broncos will open up their quest for a repeat against the Carolina Panthers, the team they topped to win Super Bowl 50. Can Cam Newton exact revenge? Spoiler alert: This game is somewhere on our list. You'll have to scroll down to find out where.I would like to say that I tried balancing out how many times the elite teams appeared on this list. You could take every Denver http://www.dolphinscheapshops.com/cheap-authentic-michael-deiter-jersey , New England, Green Bay, Carolina, Arizona, Cincinnati, and Seattle game and place them on here. I also didn't bother putting on the Los Angeles Rams home opener, or any of the London games, because I don't expect those contests to be that thrilling.My list was based on what I expect to be the best games. Here are the 15 must-see NFL games in 2016.