The 2012 Oklahoma Sooners are loaded with underclassmen, but a crucial nucleus of seniors will be key to the team's success.
Offensively, Landry Jones' return, depth at tailback and experience up front paint a bright picture for the upcoming campaign. On the defensive side, seasoned veterans on the line and in the secondary set OU up to improve a bend-but-don't-break unit and perhaps return to elite status.
Of course, there are many non-senior Sooners who will be integral this season. But here are five seniors who must lead OU in 2012.