Smith (concussion) won't play Sunday against the Dolphins, Andrew Callahan of the Boston Herald reports.
Fellow tight end Hunter Henry (knee) is listed as questionable, but if Henry's able to suit up, Smith's absence may afford him more playing time against a Dolphins defense that's allowed 10 touchdowns to tight ends, which is tied for the most in the league. Smith's last opportunity to return before the end of the regular season will come in Week 18 against the Bills.