The game of football is won in trenches. The teams with the best oline and dline will give us the most trouble.
UT returns 6 OL's with starting experience.
But... is the game of football won in the trenches? Last year UT had one of the best OL's in the country and couldn't make a bowl game. This year they had one of the worst OL's in the country and made a bowl game. Last year they started 4 Sr's on the DL with 3 of them being former 4* recruits and were just not very good. This year with undersized guys who weren't very highly recruited plus a converted LB and a Fr... they were among the SEC's best in sacks.
I'm not busting your chops. I'm just saying that the "football is won in the trenches" cliche belongs to the leather helmet era of football. Line play is just a start. In the modern era, you have to have more.