‘The Dolphins also agreed to a two-year contract with Sammy Morris, a pass-catching running back who played the past four seasons in Buffalo. Morris, 6 feet and 220 pounds, had 14 catches for 100 yards and 19 rushes for 70 yards last season. He could replace fullback Obafemi Ayanbadejo, who left for Arizona, or back up Ricky Williams if Travis Minor leaves as a restricted free agent. Morris is considered an excellent special-teams player, with 38 career tackles.’