The 1994 49ers (Deion Sanders), '96 Packers (Reggie White), '00 Ravens (Rod Woodson) and '10 Packers (Charles Woodson) would be the other title winners with the most notable free-agent additions -- guys who were top-three players on those championship clubs. Sure, there are those that added major contributors -- like the '07 Giants, who had Plaxico Burress -- but by and large, the best teams of the past two decades have been built through the draft, by signing no-name free agents (like Vrabel or James Harrison) or, in rare instances, through trade (Marshall Faulk).