QB Dayne Crist suffers injury

SOUTH BEND, Ind. -- Notre Dame quarterback Dayne Crist will miss the remainder of the season with a ruptured patella tendon in his left knee, according to NBC Sports.

Irish coach Brian Kelly said after the game that while the injury is serious, Crist's status is still unknown.

"I don't know for sure. I haven't gotten anything yet," Kelly said. "I believe ... the first report I got was a bruised knee then it was something with his patella tendon. I'll have to get more information before I confirm, deny what it is. It is a severe injury, I can tell you that just seeing Dayne briefly."

Kelly also said the Notre Dame career of leading rusher Armando Allen could be over because of a hip flexor injury that may need surgery.

Crist left the field in the first quarter of Saturday's 28-27 loss to Tulsa with the injury to his left leg. The injury likely occurred when Crist took a hit from linebacker Tanner Antle at the end of a 29-yard run. Down 7-0, Crist was knocked out of bounds by helmet-to-helmet contact but immediately grabbed his left knee. The junior's left leg was put in a brace and he was helped to the locker room by Irish training staff.

Following the 2009 season, Crist had surgery to repair torn ligaments in his right knee.

Freshman Tommy Rees came in, drove Notre Dame to the 10-yard line and connected on a touchdown pass to Michael Floyd. The PAT was blocked and returned for a two-point conversion, which gave Tulsa a 9-6 lead.

Rees finished with an Irish freshman record 334 yards and four touchdowns on 33-of-54 passing, but was intercepted three times, including one with under a minute to play on second down from the 8-yard line. Reese was trying to find Floyd in the right corner of the end zone, but Tulsa's John Flanders plucked the ball from the air with 36 seconds left to secure the upset.

Nate Montana will begin working as the backup to Rees.

Wes Morgan covers Notre Dame for ESPNChicago.com. Information from The Associated Press was used in this report.