The Oakland Raiders added a veteran to bolster the defense.
Defensive tackle Ahtyba Rubin signed a free-agent deal, his representation announced Monday on Twitter.
The team later confirmed the signings on Tuesday.
The 6-foot-2, 310-pound Rubin, who entered the league in 2008 as a sixth-round pick with the Cleveland Browns, will provide depth to the Raiders' defensive line.
He previously spent seven seasons in Cleveland (2008-14), two seasons with the Seattle Seahawks (2015-16) and played two games for the Denver Broncos and 10 games with the Atlanta Falcons in 2017.
On his career, the 31-year-old Rubin has appeared in 143 games with 107 starts.
The Raiders are signing former Cardinals defensive lineman Frostee Rucker to a one-year deal, a source told NFL Network's Tom Pelissero.
Rucker played six seasons in Cincinnati (2006-2011), one year in Cleveland (2012) and five seasons in Arizona (2013-2017). He has a career 176 tackles, 21.5 sacks and one interception.