2. Start Corey Levin at right guard
Corey Levin is clearly the best backup interior lineman on the roster, but the question is whether Mike Vrabel would actually let Tim Kelly put the only three players with center experience all play on the field at the same time.
If Aaron Brewer was starting at center, Corey Levin was starting at right guard, and Daniel Brunskill was starting at right tackle, it would leave the Titans bench without a proven backup center.
Luckily, I think this is where the new practice squad rules would help the Titans. They could keep a fourth center on the PS in case there was an emergency and they needed someone to come in and play, but they could still start their best five offensive linemen without hesitation.
Jamarco Jones, Jordan Roos, and Jaelyn Duncan all were considered but Levin is better than all three right now.
If the Tennessee Titans feel uncomfortable with all of their center options on the field at the same time, they can let this offensive line play for a few weeks and then bring Radunz in to play right guard as soon as possible.