NORMAN — In February, Oklahoma signed two offensive tackles and four defensive tackles to inject additional depth into those dangerously thin units.
OU coaches also moved junior Chuka Ndulue inside from defensive end to tackle before spring practices started.
At this point in the summer, though, the Sooners are still awaiting two junior-college transfers — defensive tackle Quincy Russell and offensive tackle Josiah St. John — and lost freshman-to-be defensive tackle Kerrick Huggins, whose grades forced him to begin his college football career elsewhere.
Ndulue's DUI arrest late last month didn't help, either; such indiscretions have typically resulted in one-game suspensions under coach Bob Stoops.
Russell and St. John each signed with OU out of Trinity Valley Community College. Russell originally signed with Texas out of high school, but went the junior-college route because of grades.
Ironically, Huggins announced via Twitter earlier this summer that he'll play at Trinity Valley this fall.
The Sooners' defensive tackle group last season was senior-dominated, with just redshirt freshman Jordan Phillips joining the regular rotation.
Phillips, now a sophomore, redshirt freshman Jordan Wade and junior Torrea Peterson — rarely used to this point — were OU's only three defensive tackles entering spring practices, forcing Ndulue and junior defensive end Rashod Favors inside to tackle.
Ndulue and Phillips were OU's starting defensive tackles in April's spring game.
The only senior who regularly contributed on last year's offensive line was tackle Lane Johnson, who was selected fourth overall in the 2013 NFL Draft. Projected starters Tyrus Thompson and Daryl Williams each have several career starts, but the depth behind them is troubling, making St. John's expected arrival all the more important.
The Sooners also signed freshman offensive tackle Christian Daimler and freshmen defensive tackles Matthew Romar and Charles Walker, all of whom are participating in summer workouts in Norman.