February 6th, 2013 
Matt Loede 
Posted in Vikings center John Sullivan won’t be around for much of the offseason after he had microfracture surgery on his left knee last week.
The surgery took place last Thursday, and right now the team is hopeful that he will be ready by the start of training camp.
Sullivan was on the injury report for a knee issue just once during the 2012 season.
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Hope he’s back in time and as well as ever. Sullivan is a very integral and important part of the Vikings O-line. One of THE most important parts.