4-star DE Ron Tatum III flips commitment from Texas to Oklahoma

Lincoln Riley is already making moves.

The new Oklahoma head coach secured the services of Ron Tatum III on Monday, as the four-star defensive end announced he's decommitting from Texas in order to join the Sooners.

Tatum seemed set on playing for Tom Herman and Co. back in April, but the pass-rusher and Oklahoma native must have been swayed by Riley taking over the head coaching duties in Norman.

The No. 77-ranked recruit on the ESPN 300 for the 2018 class also ranks as the No. 2 player in Oklahoma, and the eighth overall defensive end.

Riley's head coaching tenure for the Sooners isn't even a week old but the fact he's flipping commitments from the program's greatest rival has to be pleasing fans thus far.