WACO, Texas -- Baylor's new-look defense was in for a test against TCU's offense, but it looks like new coordinator Phil Bennett's side of the ball took an early blow.

On a 38-yard pass from Casey Pachall to Josh Boyce, Baylor cornerback Tyler Stephenson fell down behind the play and looked to be in serious pain.

Trainers attended to him for a couple minutes before helping him off the field. He was unable to put any weight on his left leg.

Stephenson, a sophomore, is the Bears' starting corner. Sophomore K.J. Morton is behind him on the depth chart.

On the play after Stephenson's injury, TCU's Matthew Tucker ran for a 4-yard touchdown and put the Horned Frogs up, 13-7 with 5:46 to play in the first quarter.