Baylor quarterback Seth Russell will undergo season-ending surgery on the ankle he fractured in Saturday's game against Oklahoma, the team announced.

Russell departed early against the Sooners with what the team officially called a dislocated ankle, though the program announced the injury as a fracture in Sunday's news release.

Either way, it's the second straight year in which Russell has been hit with a season-ending injury. Last year, it was a broken bone in his neck - which required surgery - that cut Russell's campaign short.

"Seth worked so hard to come back from the neck injury, and it's not about losing the talent and production at quarterback, it's more just like having one of your own children hurt," interim coach Jim Grobe said. "It breaks your heart to see a really, really good guy get hurt like that. Just really, really sad because you love the kid so much."

Related: What could have been for Seth Russell at Baylor

Russell threw for 2,126 yards and 20 touchdowns in his senior season. He led the Bears to a 6-0 start, before three straight losses sent Baylor to a 6-3 mark.

The team said in its release that Russell will undergo season-ending surgery, but only officially ruled him out for the remainder of the regular season.

The Bears also announced that true freshman Zach Smith will get the start for Baylor against Kansas State on Saturday, which is senior day in Waco.