Jonathan Cooper joins the mix for Raiders at guard

ALAMEDA – Jonathan Cooper, a former firstround draft pick whose career has yet to take off with five different organizations, was signed by the Raiders Monday.

Cooper, 29, was the No. 7 overall pick out of North Carolina by the Arizona Cardinals in 2013. He is a veteran of 45 games and 31 starts, including four last season for Washington. In 2017, Cooper started 13 games at left guard on a very good Dallas Cowboys offensive line.

Other stops for Cooper include the 49ers (he didn’t make the team out of training camp) in 2018, Cleveland (five games with three starts) and New England (no action), the latter two both in 2016.

With veterans scheduled to report to training camp in Napa on July 26, Cooper joins a group that includes incumbent Gabe Jackson and veteran Denver Kirkland on the right side and free agent Richie Incongnito, Denzelle Good and and undrafted rookie free agent Lester Cotton on the left side.

Incognito was suspended two games by the NFL for being in violation of the league’s personal conduct policy, but will be present at training camp and through the four-game preseason. Incognito and Good are the favorites to replace Kelechi Osemele, who was traded in the offseason to the New York Jets.

Cooper was one of the final roster cuts by the 49ers last season after signing a one-year, $4.9 million contract and was slow to recover from off-season knee surgery.

Signed by Washington because of injuries on the offensive line, Cooper started Weeks 10 through 13 before being lost to a torn biceps.

To make room for Cooper on the roster, wide receiver Montay Crockett was waived.