Coach Mike Shanahan said he was “very disappointed” with tight end Fred Davis and left tackle Trent Williams for the poor judgment they showed in failing multiple drug tests. “I think our whole team feels let down,” Shanahan said.

Shanahan said he learned of the initial failed drug test during training camp. He said it was “very disappointing” that the players continued to fail drug tests after that.

The coach said both players will have to prove themselves in the future. “They addressed the team and said ‘Hey, I screwed up.’ ... Now time will tell. ... We’ll find out very quickly if they’re going down the right path,” Shanahan said.

The Redskins practiced off-site Wednesday because of heavy rain and because their practice bubble -- due to be completed Nov. 1 -- is far from finished.

Shanahan said safety LaRon Landry (groin), punter Sav Rocca (ankle), and nose tackle Chris Baker (quad) all missed practice with injuries.

Linebacker London Fletcher (ankle) was among a group of players limited in practice.

Shanahan said Willie Smith and Sean Locklear are competing for the starting left tackle spot, and Tyler Polumbus is working as a backup left guard and backup right tackle.

More Redskins news:

Williams, Davis apologize to teammates

Sellers ready for larger role

Mayor wants Redskins back in D.C.