The Seattle Seahawks have built their offensive identity around big, physical cornerbacks.

It's looking like they'll have to make a playoff push without them.

Starting left cornerback Richard Sherman and starting right cornerback Brandon Browner are facing four-game suspensions for violating the NFL's policy on performance-enhancing drugs, ESPN's Adam Schefter reported.

Seattle recently welcomed back cornerback Walter Thurmond from the physically unable to perform list. Veteran Marcus Trufant is also an option. Sherman was arguably the Seahawks' best defensive player this season. Browner went to the Pro Bowl after last season.

Seattle has five games remaining. The team has a 6-5 record after losing at Miami on Sunday.