Cornerback Tracy Porter is best known for his interception return of Peyton Manning at the end of Super Bowl XLIV in 2010, but he started 16 games for the Raiders last season. (Mike Groll/Associated Press)

The Washington Redskins came to agreements with three players that could help their defensive unit.

The team announced the signing of defensive end Clifton Geathers, and people with knowledge of the situation confirmed that the team has come to terms with inside linebacker Darryl Sharpton and cornerback Tracy Porter.

Geathers, a 6-foot-8, 340-pound fourth-year pro, is the nephew of former Redskin Jumpy Geathers. Clifton Geathers, a sixth-round pick of the Miami Dolphins in 2010, appeared in 16 games for the Eagles last season, starting one of them. he recorded 13 tackles. He also has had brief stints with the Seahawks, Cowboys and Colts. He likely will compete for time as a backup lineman.

Sharpton presumably would fill the void at inside linebacker next to Perry Riley Jr. The fifth-year pro, drafted by Houston one pick ahead of Riley in 2010, Sharpton started the final eight games of the 2013 season for the Texans. He recorded 87 tackles and one forced fumble this season. The 5-foot-11, 235-pound Miami product had made 11 starts in 27 games from 2010-12.

A seventh-year veteran out of Indiana, Porter spent last season with the Oakland Raiders, starting all 16 games and recording 67 tackles, two interceptions and a touchdown. Porter has the ability to play both on the inside and outside, but he has battled injuries during his career, playing just one 16 game season.

A former second-round pick, Porter spent the first four years of his career with New Orleans before playing for Denver in 2012.

The Redskins have sought help for a secondary that last season struggled with consistency. Top cornerback DeAngelo Hall re-signed with the team earlier this offseason, and David Amerson returns for his second season out of N.C. State. But Josh Wilson, who had started opposite Hall, is a free agent.

Washington pursued Carolina’s Captain Munnerlyn and Baltimore’s Corey Graham. But Graham signed with his hometown Buffalo Bills, and Munnerlyn was scheduled to visit Minnesota today.

The Redskins also are hosting cornerbacks Brandon Browner and Walter Thurmond today and tomorrow, respectively.

Have a Redskins question? E-mail Mike Jones at with the subject line “Mailbag question” for him to answer it in The Mailbag on Tuesdays.

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