Free agency can propel an NFL team to a new level. Ask Cincinnati, which ran to the Super Bowl on the back of a defense mostly built by free agency. Players such as Trey Hendrickson, Vonn Bell, Larry Ogunjobi and Chidobe Awuzie all played key roles as the Bengals fought their way through the AFC. The Rams were able to stall them in the Super Bowl through contributions from guys like A'Shawn Robinson, Odell Beckham Jr. and Leonard Floyd -- all of whom joined the champs from the open market.