Losing Alex Mack was a crushing blow; like previously mentioned, he is an elite/all pro NFL center. His performance in the Saints game was about as dominating as anything I've ever seen by an NFL OL in the past few years.
Greco and McQ had a decent game vs PIT, but they were shih-tay in Jax. McDonald didn't dominate, but he wasn't a matador either. I'd rather have Greco at RG with an NFL-caliber center, than Greco at C with a backup G; we still have 4/5 of our starting OL.
Gerald McCoy has been pretty dominant this year, and I expect to see him in the Browns' backfield a couple times on Sunday. This TB front four can get after QBs, and with Lavonte David on the edge, we could have our hands full.
While I understand Pettine's limiting the number of Crowell's snaps vs OAK, it's easier to take if the in-game RBs are averaging more than 2ypc.