Kelly says Notre Dame QB Rees is day to day with neck injury, expected to practice Tuesday

Notre Dame quarterback Tommy Rees throws a pass as Southern California linebacker Devon Dennard closes during the first quarter of a college football game on Saturday, Oct. 19, 2013, in South Bend, Ind. (AP Photo/Joe Raymond) (The Associated Press)

Notre Dame quarterback Tommy Rees walks off the field after Notre Dame's 14-10 victory over Southern California in an NCAA college football game Saturday, Oct. 19, 2013, in South Bend, Ind. Rees was knocked out of the game in the third quarter. (AP Photo/Joe Raymond) (The Associated Press)

Notre Dame coach Brian Kelly describes quarterback Tommy Rees as day to day after a neck injury caused him to miss most of the second half against USC.

But Kelly expects him to practice Tuesday.

Kelly says Rees was still sore Sunday, although feeling better. Rees was 14 of 21 for 166 yards and two touchdowns before being injured when he was sacked by linebacker Lamar Dawson.

Kelly adds Rees would have to practice a couple times this week to be ready to start Saturday for the Irish (5-2) at Air Force (1-6).

Under backup Andrew Hendrix, the Irish offense couldn't do anything against USC, managing just two first downs as he was 0 for 4. Kelly says he's not sure why Hendrix struggled so much, saying he needs to play better.