Lessons Learned as Jim Knowles talks nickel position, depth chart mobility

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Jim Knowles by Matt Parker -- Lettermen Row -- — Ohio State defensive coordinator Jim Knowles speaks to the media after spring practice. He is in his second year with the program. (Matt Parker/Lettermen Row)

COLUMBUS — Ohio State defensive graduate assistant James Laurinaitis is the Buckeyes' assistant linebackers coach. But he offers more insight than his job title might suggest.