Porter tweaks hamstring; Carey returns

DAVIE, Fla. -- Miami Dolphins linebacker Joey Porter is nursing a hamstring injury, while tackle Vernon Carey has returned to full drills.

Porter was limited in practice Thursday with an injury coach Tony Sparano described as "a little hamstring tweak." Porter has missed only six games in his 11-year NFL career, and none since 2006.

Carey took part in all drills after being limited Wednesday because of a sore right knee. The Dolphins play Sunday at San Diego.