Slated to serve as primary backup
Allen (coach's decision) will serve as the No. 2 quarterback in Thursday's Week 2 matchup against the Giants, Jeremy Fowler of ESPN.com reports.
The 25-year-old was a healthy scratch in Sunday's season opener, but he'll step in as the primary backup behind Taylor Heinicke because Ryan Fitzpatrick (hip) is expected to be ruled out for Thursday's game. Allen appeared in four games for Washington last year and completed 60 of 87 passes for 610 yards, four touchdowns and an interception.
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Gibson (shoulder) will play Sunday against the Bills.
Gibson (shoulder) was estimated as a full participant for Friday's practice and is expected to play Sunday at Buffalo, John Keim of ESPN.com reports.
Gibson (shoulder) was a full participant in Thursday's practice, Nicki Jhabvala of The Washington Post reports.
Samuel (groin) was running along the sideline during Wednesday's practice, Nicki Jhabvala of The Washington Post reports.
Gibson (shoulder) was a limited practice participant Wednesday, Rhiannon Walker of The Athletic reports.
Seals-Jones caught his lone target for a 19-yard touchdown in Thursday's 30-29 win over the Giants.
Brown caught three of six targets for 34 yards in Thursday's 30-29 win over the Giants.
Humphries caught seven of eight targets for 44 yards in Thursday's 30-29 win over the Giants.
McKissic caught five of six targets for 83 yards and took four carries for 10 yards and a touchdown in Thursday's 30-29 win over the Giants.
Thomas brought in five of seven targets for 45 yards in Washington's 30-29 win over the Giants on Thursday night.