Heyer's challenge in Seattle

If Stephon Heyer doesn't know it now, he'll find out this Saturday: in the playoffs, there is little margin for error.

One critical sack, or even a false start penalty, could derail the Redskins' chances of advancing to the NFC Divisional Playoffs.

As the Redskins prepare for Saturday's Wild Card matchup against the Seattle Seahawks, Heyer is certain to be a key player in the team's fortunes.

Since taking over at right tackle for Todd Wade in Week 15, Heyer has been solid.

He shut down future Hall of Famer Michael Strahan, slowed down speed rusher Kenechi Udeze and fended off Greg Ellis.

Now, in Seattle, Heyer takes on the NFC's top pass rusher in defensive end Patrick Kerney, who led the conference in sacks with 14.5.