Two free agent pickups from San Francisco will try to give a spark to the Green Bay Packers defense on Sunday against the Baltimore Ravens at Lambeau Field. Defensive lineman Quinton Dial is back at practice after missing two games with a chest injury that’s been bothering him since late September — and defensive coordinator Dom Capers says Dial has played against the run very well in his limited time. Outside linebacker Ahmad Brooks deflected a pass last week at Chicago in his first action after missing three games with a bad back.