New defensive coordinator Derek Mason met with the entire defense and his new staff. The Cowboys have a full-time linebackers coach for the first time since Glenn Spencer left. Oklahoma State could sign three new players on Feb. 2.

We pick back up with our postseason series on Oklahoma State football as we needed to wait until head coach Mike Gundy hired a defensive coordinator to look under the hood of the defense.

Want to know more about Oklahoma State's new defensive coordinator? More on Mike Gundy's choice is a true player's coach? Eli Lederman of the Tulsa World writes an award caliber piece about Derek Mason and how he feels about his players.

Oklahoma State's new defensive coordinator Derek Mason is on campus and was touring the West End Zone on Thursday and it appears he has filled the vacancy of Koy McFarland.

Mason has brought in 29 four star defensive prospects in his time as defensive coordinator and head coach since 2011

We tapped into Derek Mason's past as head coach at Vanderbilt and a reporter that observed him up close to find out who the Cowboys new defensive coordinator is.

Oklahoma State sent out a release on new DC hire Derek Mason, which included comments from both Derek Mason and head coach Mike Gundy.

Here's a look at all the places Derek Mason has coached at throughout his coaching career.

The last week has been an experience for former Auburn defensive coordinator Derek Mason. A former head coach at Vanderbilt, Mason finds himself a free agent of his own doing, and the possibility of bringing his talents to Oklahoma State.

According to a pair of recruits that Pokes Report spoke with, they were told to keep their eyes open because it was likely Oklahoma State could announce their new defensive coordinator Sunday.

On top of trying to manage the January recruiting effort, a junior day coming up on Saturday, and working to keep players from going in the portal, Oklahoma State head coach Mike Gundy is looking to finalize his choice for defensive coordinator.