The Redskins were surprised to learn that Tony Romo suffered a season-ending injury in their game.

News of Dallas Cowboys quarterback Tony Romo’s season-ending injury took the Redskins by surprise when they heard of it on Monday night. Although Romo hobbled through the final minutes of his team’s game against Washington, the Redskins didn’t realize how seriously injured Romo was at the time.

Romo is believed to need surgery to repair a herniated disk, and isn’t expected to play again this season for the Cowboys, who need a win over Philadelphia on Sunday to advance to the playoffs.

Romo came up injured during a fourth-quarter drive that ended with Dallas scoring a field goal. Redskins outside linebacker Rob Jackson narrowly missed sacking Romo, but did grab the quarterback’s foot as Romo eluded him. Romo walked gingerly after the play, and was seen grimacing at times even as he lined up under center.

“I had no idea,” Redskins Coach Mike Shanahan said on Tuesday. “I thought it was his ankle.”

Said inside linebacker Perry Riley, “I’ve seen the play that everybody has seen where Rob got his foot, but after that, I didn’t notice anything during his snaps or anything like that with other plays.”

Romo returned when the Cowboys got the ball back and led a nine-play, 87-yard scoring drive. On the final play of the possession (fourth-and-goal from the 10-yard line), Romo stepped up into the pocket and then threw a touchdown pass to running back DeMarco Murray to tie the score. Kicker Dan Bailey then made the point-after attempt to lift his team to the 24-23 victory.

Romo reportedly had some back issues during the week leading up to the game with Washington, but Dallas never listed him on the injury report. Shanahan said that he didn’t take offense to the lack of disclosure, however.

“The only thing that annoyed me was the play that he made at the end of the game,” Shanahan said, and then chuckled.