SoonerNation links: Coveted DB commits

Bob Przybylo: In-state defensive back Kevin Peterson commits to the Sooners.

PrzybyloInsider: Despite the commitment of Kevin Peterson, Oklahoma’s defense needs players that can make an instant impact in 2012.

Brandon ChatmonInsider: Linebacker analysis.

Video: More analysis of Oklahoma's linebackers.

PrzybyloInsider: Juco tight end Brannon Green talks about his official visit to Oklahoma.

RecruitingInsider: In-state running back Alex Ross is recovering from a collarbone injury.

PrzybyloInsider: Opening the mailbag.