Head coach Jon Gruden is all about the grinders, and he's adding another one to his already improved defensive unit by bringing in a 12-year veteran defensive lineman. 

Now former Arizona Cardinal and 34-year-old Frostee Rucker will officially be joining the Oakland Raiders

Rucker, who was a captain last year for the Cardinals, started all 16 games for the team's former defensive coordinator James Bettcher. He racked up a total of 30 tackles and 1.5 sacks as a pure run-stopping beast.

In an effort to improve a Raiders defense that ranked toward the middle of the league in rushing yards surrendered per game with 108.9 in 2017, Gruden has paid a lot of attention to his defensive interior. The team drafted  Arden Key, P.J. Hall and Maurice Hurst to bulk up the line this year. 

A veteran presence like Rucker could do some good in helping to groom those young players. The third-round pick of the 2006 draft took the time to release a statement of his move via Twitter.

Rucker is highly reliable and a leader, so this is a transaction Raiders fans will welcome with open arms.