Vikings' John Sullivan reportedly has knee surgery

- Around the League Writer
- Published: Feb. 6, 2013 at 05:46 p.m.
- Updated: Feb. 6, 2013 at 06:02 p.m.
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John Sullivan of the Minnesota Vikings was arguably the NFL's premier center in 2012. He's likely to miss the majority of the team's offseason program after undergoing knee surgery.











