QB Allen week to week with injured throwing arm

Bills rookie Josh Allen is out indefinitely after hurting his right throwing arm and leaving Buffalo in a quandary at quarterback.

Without providing many details, coach Sean McDermott would only list Allen as being “week to week” on Monday, a day after Allen hurt his elbow in the third quarter of a 20-13 loss at Houston. McDermott said he will know more about the nature of Allen’s injury after meeting with team doctors.

The injury to the first-round draft pick leaves McDermott having to decide between having turnover-prone backup Nathan Peterman or newly signed 12year veteran Derek Anderson start in Buffalo’s game at Indianapolis on Sunday. McDermott wouldn’t provide a hint as to who would start in Allen’s place.

Peterman threw two interceptions, with his first returned for the deciding touchdown with 1:23 left against the Texans.

Including a brief playoff appearance, the second-year player has been intercepted on 10 of his 82 career attempts. And he is best remembered for throwing five interceptions in the first half of a 54-24 loss at the Los Angeles Chargers last season.

Anderson was signed only a week ago after spending the entire offseason away from football. The 35-year- old attempted only eight passes in three appearances with Carolina last season, and hasn’t started a game in nearly two years.

Allen was hurt while being struck from both sides by Whitney Mercilus and Jadeveon Clowney. Mercilus struck Allen’s throwing arm just after the quarterback released the ball for a 39-yard completion to Kelvin Benjamin.

Allen bent down and grabbed his arm in pain and stayed in for one more play — an incompletion to Zay Jones — before going down to one knee.