Williams, right, blocks a Saints defender in the first game of the season. (John McDonnell/Washington Post)

Williams returned to the game late in the second quarter.


The Washington Redskins lost starting left tackle Trent Williams to a right knee injury on their second offensive play of the game.

 Down 7-0 following a 73-yard touchdown pass from Cincinnati’s Mohamed Sanu to A.J. Green, the Redskins got the ball at their own 17, and rookie Alfred Morris gained 10 yards off right tackle on his first carry.

 On the next play, Morris gained 12 yards on a run to the left, but Williams, who was engaged with a defender, fell and writhed in pain at the end of the play.

 Trainers attended to Williams, who limped off the field under his own power. After he was checked on the trainer’s table, Williams tested the knee by getting into a three-point stance and then tried to shoot off the line. Williams grimaced in pain with each attempt headed to the locker room.

 Jordan Black took Williams’ place at left tackle.

The Redskins also had an injury on defense as cornerback Cedric Griffin pulled a hamstring and is listed as questionable to return.