NOTES: Besides Lee and Sims, the Cowboys were missing starting DEs DeMarcus Ware and George Selvie in practice. Both are dealing with back issues. ... CB Morris Claiborne said he will miss his fourth straight game with a hamstring injury. His return was slowed because he was away from the team after the death of his father and the birth of his child. ... The Cowboys signed kick-return specialist Micheal Spurlock with Dwayne Harris (hamstring) expected to miss the Washington game and Terrance Williams also slowed by a hamstring issue. ... Dallas signed DT Frank Kearse off Tennessee’s practice squad and added LB Jonathan Stewart to its practice squad.