Sooners' position needs in 2014

NORMAN, Okla. -- Signing day for the Class of 2013 is quickly approaching, but it's never too early to take a look at Oklahoma's needs for the Class of 2014. Obviously, those will change as the Sooners' 2013 class arrives on campus and begins to prove its viability. Yet there are some positions that appear to be clear priorities for the Sooners in 2014. Here's a look at some of those:

Interior offensive line

Center Ty Darlington, guard Kyle Marrs and guard Nila Kasitati are the lone underclassmen along OU's interior line. The Sooners appear set for 2013, but the long-term future is unclear.