The Seahawks have placed starting nickel cornerback Jeremy Lane on the Injury Reserve with designation to return, the NFL's new de facto short term injured reserve list. Marcus Burley, acquired from the Colts for a future sixth-round pick at roster cut-downs, is the next man up, and will get the start in the slot until Lane is back -- which will be, at the soonest, Week 11 at the Chiefs. Short term IR designated players must sit out at least eight weeks.
I say "starting nickel corner" above for Lane because while technically-speaking, he is not a starter for Seattle's defense, he and backup Marcus Burley played 57 of the Seahawks 62 snaps in Thursday's game, so it's obviously an important position, particularly against pass-heavy or spread-offense type teams.
The Seahawks filled the vacated roster spot by signing veteran cornerback Josh Thomas. Thomas was a fifth rounder for the Cowboys back in 2011 and had been with the Panthers the last couple of seasons, where he appeared in 38 games and started 10. From what I can gather, he produced mixed results in his time there, but obviously couldn't make it onto their roster this season.
The Seahawks also reportedly hosted former Tampa Bay Buccaneer and Virginia University of Lynchburg CB Keith Lewis and former Jaguars CB Mike Harris today, along with a few others, including apparently Josh Thomas. It will be interesting to see if Lewis lands on Seattle's practice squad at some point.
For now -- it's a tough loss to see Lane gone for the next eight weeks. He looked strong against Green Bay before leaving when he aggravated his groin injury. Groin injuries can take a while to completely heal so obviously the Seahawks want to take the slow approach to getting him back and ready for the stretch run.