Redskins offensive tackle Trent Williams and tight end Fred Davis are facing four-game suspensions following a lockout-related drug-test settlement between the league and the NFL Players Association, according to sources. Williams and Davis were two of 11 players that tested positive for recreational drugs shortly after the lockout ended this summer, according to the sources. As part of the settlement, the other nine positive tests by unidentified players will be nullified. Williams and Davis are considered repeat offenders, according to the sources, and would have faced one-year bans under normal circumstances.