The Raiders opened up two roster spots today after placing defensive end Maxx Crosby and running back Sincere McCormick on injured reserve, per Ian Rapoport of NFL Network. They filled one 53-man roster spot by signing defensive end Andre Carter II off of the Vikings’ practice squad. The other was filled with the promotion of practice squad running back Chris Collier to the active roster. 
The Crosby move is no surprise after reports that he would undergo season-ending surgery on his ankle. Carter won’t likely add much on defense for the Raiders, but his addition adds much-needed depth along a beleaguered defensive line.
The loss of McCormick hurts a team that has struggled mightily in the run game this year. The Raiders currently rank dead last in the NFL in rushing offense.
After going undrafted out of UTSA in 2022, McCormick finally made his NFL debut this season and earned two starts in place of an injured Alexander Mattison, even remaining the starter last week when Mattison returned. He earned his first start after rushing for 64 yards on 12 carries in Week 12, a total Mattison had only reached once all season and that Zamir White failed to reach in any of his starts. McCormick followed that up with a 78-yard rushing performance in his first NFL start the next week.
With McCormick out, Mattison should retake starting duties with Ameer Abdullah continuing in his backup role. Collier will add depth behind those two and sixth-round New Hampshire rookie Dylan Laube.
In addition to all the active roster updates, Las Vegas signed defensive end Ovie Oghoufo and running back Isaiah Spiller to the practice squad.