Oakland Raiders OG Gabe Jackson has exclusively played left guard in four years of college and two years with the team, but he will play right guard this season after the club signed OG Kelechi Osemele in the offseason and re-signed OT Donald Penn to play tackle. ‘I think from our standpoint we’re looking for the best combination, we feel he’s got the power you really covet for a right guard,’ head coach Jack Del Rio said Wednesday, June 1.