The Buffalo Bills lost starting guard Andy Levitre during the start of free agency Tuesday. On Day 2 Buffalo lost Levitre’s backup, Chad Rinehart, to the San Diego Chargers.

Guard has suddenly become an area of concern for the Bills. Buffalo lost two guards in two days. Rinehart was potentially a cheaper insurance policy for the Bills if Levitre left. But San Diego scooped up Buffalo's backup guard on Wednesday.

The Bills need quality offensive linemen to protect their new quarterback, whoever that may be, and create running lanes for dynamic tailback C.J. Spiller. The Bills have several swing players who are part-time guards, but no long-term solution to pair with starter Kraig Urbik.

Buffalo has enough cap room to seek out a replacement guard in free agency. The NFL draft also is a possibility -- even as early as the first round. University of Alabama guard Chance Warmack is viewed as one of the top guard prospects of the past 10 years. Warmack could be on Buffalo’s radar at No. 8 overall following the events of the past two days.