Claiborne (hamstring) has been ruled out for Sunday's game in Miami, Armando Salguero of the Miami Herald reports.
With Claiborne unavailable, Byron Jones figures to primarily work as a cornerback, which should free up some extra snaps for safeties Jeff Heath and J.J. Wilcox. Claiborne isn't particularly good, so his absence isn't cause to significantly downgrade the Dallas defense.
Romo will miss the remainder of the season after being diagnosed with a hairline fracture to his left clavicle Friday, Brandon George of The Dallas Morning News reports.
Romo's clavicle won't actually require surgery but he'll still need to sit out the rest of the season after sustaining the break during Thursday's loss to the Panthers. Matt Cassel will seemingly take over from here on out as the Cowboys fade out of playoff contention after Romo's second left clavicle injury in just a matter of months.
Hall logged just 18 snaps on defense Week 10 against the Saints, but his presence will provide added depth to the Washington secondary. Per Tarik El-Bashir of CSN Washington, Hall could see some snaps at safety, which makes sense considering starting strong safety Trenton Robinson is inactive.
Knighton was able to log a limited practice Friday, and that was enough to warrant an active status Sunday, despite seeing a migraine specialist earlier in the week. His presence will certainly be welcome against a run-heavy Carolina offensive unit.
Morris (ribs) is listed as probable for Sunday's game against the Giants.
A full practice participant throughout the week, Morris is expected to play through the rib injury that knocked him out of a Week 11 loss to the Panthers. There's some chance the pain will flare up again during Sunday's game, but the bigger issue is that he's part of a three-man committee, in a matchup that should favor the Washington passing game.
Roberts will suit up for the contest after logging a full week of practice, but isn't expected to play a major role. The 5-foot-11 wideout played just nine offensive snaps the last time he was active Week 9 against New England.
Robinson (shoulder) is listed as probable for Sunday's game against the Giants.
Robinson hasn't played since Week 9, and even if he manages to suit up, he won't necessarily return to an every-down role. Will Compton, who has filled in capably alongside Perry Riley, is the best IDP option of the bunch, but should probably only be used if Robinson can't play.