In recent years, few college lines have come so close, or dominated so thoroughly. If there is a weekend that validates Oklahoma’s claim as “Offensive Line U.,” this might be it. On Saturday, the No. 6 Sooners, led in part by two All-Big 12 offensive linemen, will take on No. 7 Baylor in the conference championship game. On Sunday, three Oklahoma linemen who started together only two years ago will reunite at New Era Field, where the Ravens and Buffalo Bills will face off in a battle of smashmouth offenses.