It's impossible to quantify the impact free agency has on a team, but adding players is all a part of the roster-building process. These five teams sit atop our post-free agency power rankings. 5. Seahawks: Adding Eddie Lacy and Luke Joeckel should help the offense 4. Cowboys: They remain a powerhouse thanks to Dak Prescott and Ezekiel Elliott. 3. Steelers: Retaining Le'Veon Bell and Antonio Brown highlight a relatively quiet offseason 2. Falcons: Dontari Poe and Jack Crawford address Atlanta's need for defensive line help 1. Patriots: A busy free-agency haul has Tom Brady's squad looking better than ever

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