Although I'm still watching the o-line, I have to take back my assertion that they didn't protect the quarterbacks. MTSU had 2 sacks and only 4 tackles for loss. I can't find stats on pressure on the passers. So, I think they did just fine.
By contrast, MSU had 3 sacks and 11 tackles for loss, and VT had 2 and 5 respectively.
Clearly, the line is getting better each week.