• Loose balls that could have been the result of a fumble or an incomplete pass are now subject to video review. Or, as it will forever be known, "The Hochuli Rule."
• Video replay can be used to determine if a loose ball stayed in bounds or hit the sideline. This one stems from some weirdness in the NFC championship game when a kickoff was ruled to have gone out of bounds when it never had.
• No more rekicks after an illegal onsides kick (someone on the kicking team touches the ball before it travels the necessary 10 yards, etc.). It immediately becomes the other team's ball.
• The draft order has been reworked to reflect playoff results, not regular-season results. The most commonly-cited instance here is that the Chargers beat the Colts in the '08 playoffs, and thus, advanced farther than they did, but the Chargers, after having gone 8-8 in the regular season, still pick way ahead of the Colts, who went 12-4 in the regular season.
• There's a new waiver period during the first two weeks of training camp, and the postseason waiver period will begin after the NFL's final game, whether it's the Pro Bowl or the Super Bowl.
• If a fumble or lateral goes out of bounds, the clock will stop only until the referee signals ready for play.
• Forming a "wedge" on a kickoff return is no longer legal. If three or more players line up shoulder-to-shoulder within two yards of each other, it will be a penalty.
• On onside kicks, the kicking team can't have more than five players bunched together.
• A blindside block cannot be delivered with a helmet, shoulder or forearm to an opponent's head or neck. That'll be a 15-yard penalty.
• Contact to the head of a defenseless receiver will also draw a 15-yard penalty.
• A defensive player on the ground may no longer lunge or dive at the quarterback's lower legs. "The Brady Rule," 100 percent influenced by Bernard Pollard's (formerly) perfectly legal hit that sidelined Tom Brady for a full year. If you're going to sack a quarterback now, you've just got to do it while you're standing. Quarterbacks are the most vital ingredient to good football, so if it keeps more good quarterbacks healthy, I consider it a good thing.