As long as left guard Ben Grubbs is out of the lineup, the Ravens' running game will struggle.
Grubbs is the Ravens' most versatile and best offensive lineman. He is athletic, versatile and runs well. He can make blocks into the second level or overpower an opponent if necessary.
Mark LeVoir is an adequate replacement, but he can't run like Grubbs. Former Dallas center/guard Andre Gurode is another possibility to replace Grubbs, but his knee still might be questionable.