Seattle Seahawks fans should be more than familiar with this concept by now, as they’ve been suffering through a decade-long streak of poor offensive line play. What little hope for improvement this season has to hinge on rookie Grey Zabel being great right out of the gate and right tackle Abe Lucas staying healthy after missing most of the last two seasons with knee pain. Seattle has a solid left tackle with Charles Cross but that’s just about the only sure thing this unit has going for it just six weeks removed from the start of the season. The worst of it is the situation at center and right guard, where there were multiple upgrades available in both free agency and the draft, but the Seahawks passed on all of them.