Who is Tommy Gaul?? ...and is he really the back-up at C behind Ferentz, or would either Blythe/Boffeli move over in the event of an emergency?
i would guess boffeli would go to center if anything happened. i think whoever loses the boffeli/blythe battle could end up pushing tobin at the other guard along with macmillan. in the zone scheme it is more about having your 5 best ol than looking at each guy as only a guard or tackle.