Seattle's longtime fullback Mack Strong has a neck injury that will end his career. Seahawks coach Mike Holmgren said Monday that Strong woke up Sunday feeling tingling in his hands. After getting hit hard twice early in Sunday's loss to Pittsburgh, Strong felt his hand and arm going numb, Holmgren said. An examination determined he has a pinched nerve in his neck. It won't require surgery, but Strong told reporters at Seahawks headquarters here that it will end his career. The two-time Pro Bowler turned 36 this month, and has spent 15 seasons with the Seahawks.