Offense gets a hard look during Vikings' first practice
John Sullivan (center) - Wikipedia
Raiders move to 2-0 in preseason with 26-20 win over Vikings
Minnesota Vikings Mentioned in Multiple PFF Articles
Twitter Post Reactions to Vikings & Titans Joint Practice Day 1!!!
Vikings center John Sullivan slims down with new diet
Minnesota Vikings' QB hopes rest with Shaun Hill
Right guard feels better for Fusco
Minnesota Vikings: Center John Sullivan faces no limitations – Twin Cities
Vikings release veteran center Sullivan
Old man' Joe Berger remains a key figure on Vikings offensive line
John sullivan vikings hi-res stock photography and images - Alamy
Photos: Vikings vs. Browns highlights
Rams' John Sullivan will return to his NFL roots in Minnesota on Sunday, but doesn't have nostalgia on his mind - Los Angeles Times
Vikings notebook: Hutchinson praises John Randle, Sports