Dolphins add tackle and fullback

— -- DAVIE, Fla. -- The Miami Dolphins agreed to contracts with tackle John St. Clair and punter Matt Turk, and signed fullback Sammy Morris to a two-year deal. St. Clair, who played the last four seasons with St. Louis, agreed to a two-year, $2.6 million contract. Turk agreed to re-sign when offered a three-year, $2.65 million deal. The 6-foot-4, 310-pound St. Clair was a third-round pick in 2000. He started 13 games at right tackle in 2002 but played a reserve role last season after the Rams acquired Kyle Turley. Morris, who played his first four NFL seasons in Buffalo, will back up Rob Konrad and play on special teams. Also, the Dolphins are one of several teams interested in receiver David Boston, who is on the trading block. In Miami, he would be reunited with receivers coach Jerry Sullivan, who worked with Boston in Arizona and helped him reach the Pro Bowl in 2001. A trade might require restructuring the seven-year, $47 million deal Boston signed before he fell out of favor in San Diego.