Dolphins signed S Tyrone Culver to a two-year extension through 2011.
It’s essentially a new three-year, $3.225M deal. Culver, 26, has never started a game in three pro seasons, but contributes on special teams and in dime packages. Culver makes up for a lack of standout physical skills with smarts and instincts. He’d step in if anything happened to FS Gibril Wilson.