I think they have the best line combo they are going to get. maybe dawson or JBB for kalis if kalis continues to disappoint.
if it turns out to be another miserable year in terms of run stats then IMO the RBs will deserve more blame than the Oline.
while not vintage MICHIGAN, the Oline is serviceable. it's on the RBs now.
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Sometimes people standing on third base think they hit a triple, but they didn't - Jim Harbaugh