The Raiders have made a change in their secondary, claiming cornerback David Amerson off waivers and adding him to their 53-man roster, according to Ian Rapoport of NFL.com (via Twitter). Amerson was cut yesterday by Washington.

Amerson, a second-round pick in 2013, started 23 of the 31 regular season contests he played for Washington during his first two NFL seasons, taking over as one of the team’s starting cornerbacks last season. However, he didn’t play well in 2014, ranking dead last among 108 qualified cornerbacks in the NFL, according to Pro Football Focus’ data (subscription required). Per PFF, quarterbacks had a 140.2 rating and 10 touchdowns on 91 throws into Amerson’s coverage.

With Scot McCloughan now running the show in Washington, and some offseason tweaks to the roster, Amerson slid down the depth chart and wasn’t playing a crucial role for the club in the first two games of this season. Chris Culliver is also returning this week from a two-game suspension, making the 23-year-old Amerson even more expendable.

Amerson will get a shot to earn playing time in Oakland, where no cornerback has logged a positive grade so far this season, according to PFF.