Washington Redskins head coach Mike Shanahan has admitted that if his side fails to win the Super Bowl this season their campaign will have been a "failure".

The Redskins reached the playoffs last season but were knocked out in the Wild Card round when they were defeated by Seattle Seahawks.

Despite still having quarterback Robert Griffin III on the sidelines during pre-season, Shanahan is confident that his team can deliver.

"We have a team that you're going to be proud of," Shanahan told reporters. "They have set the expectations: anything short of a Super Bowl is a failure."

Shanahan won two Super Bowls during his tenure as head coach of Denver Broncos.