Originally written on NFL Injury Report  |  Last updated 11/19/14

ST. LOUIS - OCTOBER 11: Adrian Peterson #28 of the Minnesota Vikings runs to his left toward the end zone in front of teammates Steve Hutchinson #76 and John Sullivan #65 during their NFL game against the St. Louis Rams at the Edward Jones Dome on October 11, 2009 in St. Louis, Missouri. The Vikings defeated the Rams 38-10. (Photo by Dilip Vishwanat/Getty Images)
Minnesota Vikings center John Sullivan underwent microfracture surgery on his left knee last week, according to Tom Pelissero of 1500 ESPN. The Minnesota Vikings' standout center underwent microfracture surgery on his left knee last week, according to two NFL sources. Sullivan underwent the procedure last Thursday. Dr. James Andrews performed the surgery, which is expected to carry with it a three- to four-month rehabilitation period. Pelissero estimates that this will sideline Sullivan for a “good chunk” of Minnesota’s offseason program. He is expected to make a full recovery by the time training camp begins in late July. Despite his knee issues, Sullivan was able to start all 16 games for the Vikings during the regular season. His exceptional performance earned him a spot as an alternate on the NFC Pro Bowl roster. Many around the league felt that Sullivan was more deserving of a spot than Green Bay Packers veteran center Jeff Saturday. Follow @TheNFLInjuryRpt !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="http://www.thenflinjuryreport.com//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-34100676-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })();
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