STILLWATER, Okla. -- Oklahoma tried using defensive back Javon Harris.

Baylor quarterback Robert Griffin III and receiver Kendall Wright made it obvious that wasn't going to work earlier in the season. Apparently, neither will using experienced senior Sam Proctor.

Oklahoma's Tony Jefferson, who most often plays a nickel back position, is playing deep safety, something Bob Stoops has said a handful of times he has no intention of doing. Joseph Ibiloye replaced Jefferson underneath at the nickel back.

Jefferson might be Oklahoma's most instinctive defender outside of lineback Travis Lewis, and having him back there could help. Brandon Weeden hit Tracy Moore underneath for a 52-yard gain to set up a touchdown, but so far, Oklahoma's been solid over the top, where the Bears gave the Sooners big trouble.

It's definitely something to keep an eye on.