The injury list continues to grow for the University of Wisconsin football team's defense.

Senior linebacker Jonathan Casillas hurt his left ankle during practice Thursday morning and was seen wearing an immobilizer boot later in practice.

``It's not serious, but we might miss him for a couple weeks,'' UW coach Bret Bielema said.

Other key UW defensive players out with injuries include linemen Jason Chapman (knee), Kirk DeCremer (back) and Mike Newkirk (shoulder); and cornerbacks Allen Langford (knee) and Aaron Henry (knee).

Junior linebacker Elijah Hodge (knee) returned to practice Thursday. 

 ``They originally told us that he wasn't going to probably scrimmage Saturday,'' Bielema said of Hodge, ``but based off of what I saw today ... he felt good.''