Seahawks HC Pete Carroll said Friday that RB Chris Carson's status for Week 6 is uncertain due to a lingering neck injury. “This is a day-to-day thing with Chris. We have to see how he responds. The short week did not help him at all," Carroll said. "He’s got an old injury that you can see (in exams). It’s kind of, I don’t know if it’s chronic, but it occasionally pops up. It hasn’t been an issue in the past. He didn’t get hit, and that’s how he got hurt. It’s a condition he’s got probably from weightlifting and all of the stuff he’s done over the years. It could have been something a long time ago. It’s just flared up some, so we’re being real careful with him. He was too uncomfortable to play.” We'll keep an eye on Carson when the Seahawks get back to work next week. RB Alex Collins operated as Seattle's lead back with Carson out on Thursday night. Note that RB Rashaad Penny (calf) is eligible to come off IR in Week 7.