Redskins offensive line coach Bill Callahan, center, reviews plays on a tablet with tackles Ty Nsekhe, left, and Takoby Cofield during a preseason game against the Browns on Aug. 13, 2015. (David Richard/Associated Press)

The Washington Redskins have signed 13 players to reserve/future contracts over the past week, including three on Tuesday. The team’s latest moves added defensive linemen Corey Crawford and Kamal Johnson and linebacker Derrick Mathews.

Austin Reiter, center, working with Bill Callahan, right, and Arie Kouandjio, was a seventh-round draft pick in 2015. (Pablo Martinez Monsivais/Associated Press)

The team now holds the rights for these players — all were not on active rosters at the end of the 2015 season — heading into the next NFL calendar year. On Monday, the Redskins signed running back Mack Brown, wide receiver LaRon Byrd, offensive tackle Takoby Cofield, defensive lineman Anthony Johnson, cornerback Al Louis-Jean, center Austin Reiter and linebacker Lynden Trail to reserve/future contracts, as well. All 10 players spent time on the Redskins practice squad this season.

Washington signed defensive linemen Christo Bilukidi and Jerrell Powe and linebacker Desmond Bishop to reserve/future contracts last week.

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