Stephen Holder

After one of its more disconcerting performances of the season, the Indianapolis Colts' offensive line will look different on Sunday against the Washington Redskins.

The right side of the line will change completely based on Monday's injury updates.

Coach Chuck Pagano said starting right guard Hugh Thornton is "week to week" with a knee sprain, a revelation that comes on the heels of one of his poorest performances this season. Pagano stopped short of saying when Thornton would return, but it was clear the Colts are making contingency plans with Thornton ailing.

Meanwhile, starting right tackle Gosder Cherilus is expected back against Washington, Pagano said, helping to shore up a position that was a weakness against the Jacksonville Jaguars. Joe Reitz, who is better suited to play guard, started in place of Cherilus, who missed the game with a shoulder injury.

Thornton arguably has regressed this season, so whoever assumes the right guard job in his stead could make a case to keep it. Pagano said the candidates are A.Q. Shipley, Xavier Nixon and Reitz. Shipley and Nixon shared snaps in relief of Thornton against the Jaguars.

The Colts had a rough first half on the offensive line, with quarterback Andrew Luck under pressure, seemingly from all sides.

"We didn't start the game the way we wanted to start the game," Pagano said. "Credit Jacksonville. They've got a defensive front that is loaded with a bunch game wreckers."

In other injury news, Pagano was noncommittal about the return of tight end Dwayne Allen this week. Allen sat out Sunday's game with an ankle sprain, but the team needs to reevaluate him later this week. Cornerback Greg Toler (concussion) missed Sunday's game but seems likely to return, Pagano said. Cornerback Darius Butler (neck) is day to day while rookie cornerback Loucheiz Purifoy continues to be evaluated for a possible concussion after experiencing symptoms after the game.

The Colts signed free agent outside linebacker Victor Butler to the active roster and waived defensive tackle Kelcy Quarles.

Follow Star reporter Stephen Holder on Twitter: @HolderStephen.

Redskins at Colts, 1 p.m. Sunday, Fox