Linebacker Derrick Johnson, who played with Kansas City for 13 seasons, signed a one-year contract with the Chiefs' hated AFC West rival, the Oakland Raiders, several media outlets reported on Friday.
Despite tearing his left Achilles tendon for the second time in two years late in the 2016 season, the 35-year-old Johnson came back to make 71 tackles and break up seven passes in 15 games for the Chiefs last season.