Washington waived punter Sam Irwin-Hill on Wednesday.
The move came soon after they selected Virginia Tech cornerback Adonis Alexander in the supplemental draft.
Irwin-Hill, 27, signed with the Cowboys as an undrafted free agent out of Arkansas in April 2017. Dallas waived him before the start of the regular season.
Washington signed Irwin-Hill in March.
In college, Irwin-Hill punted 104 times for 4,365 yards, a 42-yard average, in 25 games over two seasons.