Trent Williams said the Redskins played their worst game of the year against Pittsburgh. (John McDonnell/The Washington Post)

With the Redskins having fallen to 3-5 and one game remaining before their bye week, Washington Redskins left tackle Trent Williams called next Sunday’s game against the Carolina Panthers a “must win.”

 The Redskins play at home, where they try to avoid their first three-game losing streak of the season. After the game against Carolina and their bye, the Redskins play three straight NFC East games – against Philadelphia, Dallas and New York.

 “It’s a must-win,” Williams said. “Put it like that. I don’t know if the season’s at stake, but we have to do everything in our power to get this win.”

 Williams called the loss to the Steelers the Redskins “worst game of the year.” The Redskins did struggle mightily; for the first time all year, they didn’t have a shot at victory as the game neared its final minutes.

 Previously, the Redskins had the ball with a chance to orchestrate a game-clinching drive in six of their seven contests. (Washington held a significant lead against New Orleans in the opener).

 But this week, the Redskins struggled to move the ball, mustered a season-low 12 points (well below their average of 28.7), dropped ten passes and had seven penalties for 55 yards.

 “It’s very frustrating when you don’t even have a chance when it comes down to the end of the game,” Williams said. “It comes down to it as simple as this: They played a great game, and we didn’t.”