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2010 NFC South winner: Atlanta Falcons (13-3)
2011 common opponents: NFC East (Bears, Packers, Vikings and Lions), AFC South (Colts, Texans, Jaguars and Titans)
In 2010, the NFC South tied the AFC East for the most wins by any division with 36. The Falcons, New Orleans Saints (11-5) and the Tampa Bay Buccaneers (10-6) all had double digit wins and made the NFC South the only division to boast three teams with more than nine wins. If the Carolina Panthers (2-14) could have just won more than a league low two games, the South would have had the most wins in the NFL.
The Falcons were the division leaders for just about the entire season, with the Saints and the Buccaneers battling for the wild card spot that ultimately went to the Saints. Falcons' QB Matt Ryan was one of the most efficient QBs on third down in the NFL, and WR Roddy White led the league in receiving yards as well as catches. RB Michael Turner did his part too, and the Falcons easily won the division title with the best record in the NFC.
The Saints' defense fell apart on them, and the turnovers that won them the title just a year before simply weren't there anymore. They also lost three RBs during the course of the season, leaving them with no running game to speak of. It was all up to Drew Brees, who many thought had an off year, but he played great ball and still took his team to the playoffs.
The Buccaneers overachieved by most people's standards. Even Buccaneers fans were surprised at just how well they played last year. QB Josh Freeman is coming along well and becoming a fine QB. RB LeGarret Blount really impressed as well. He was a third day pick, but he really showed up to play in 2010, and the Buccaneers were right on the heals of a playoff birth.
With a couple more division wins, the Buccaneers could see the playoffs in 2011, and the Falcons don't show any signs of slowing down, especially with the addition of rookie WR Julio Jones to compliment Roddy White. That being said though, my money is on the 2009 champion New Orleans Saints to return healthy and strong in 2011, regaining their spot atop the NFC South.
2011 NFC South winner: New Orleans Saints