This is the only thing I can really find on this guy
9. Minnesota Vikings (7)
PB – 13th, RB – 6th, PEN – 8th
Stud: It might not be the coolest thing to say, but there’s no denying that over the past two years the best center in the league has been John Sullivan (+27.3).
Dud: The Vikings made a big mistake in keeping Brandon Fusco (-11.8) in the starting lineup when they had better options on the bench.
Summary: The only criticism of this line is that Geoff Schwartz didn’t get nearly enough playing time. That aside, what more could you want from this line? They kept their quarterback upright, and in Sullivan and Phil Loadholt they have two of the most punishing run blockers in the league at their positions. Trending upwards, with rookie left tackle Matt Kalil being exactly as advertised.
https://www.profootballfocus.com/blo...nsive-lines/3/
Well if it's a criticism that he didn't get enough play time, he must be pretty good. Sounds like he has some talent.