The San Francisco 49ers have signed RB Marcus Lattimore to a four-year deal. Lattimore (6-0, 232) was the second of the 49ers two fourth-round draft picks (131st overall) in this year's draft out of the University of South Carolina. Lattimore holds the South Carolina school records for most rushing touchdowns (38) and total touchdowns (41). In 29 games (28 starts) over three seasons with the Gamecocks, he finished with 2,677 career rushing yards and 555 carries to rank sixth and fourth, respectively, in school history. A three-time All-SEC selection, Lattimore was also named the SEC Freshman of the Year in 2010 when he set the Gamecocks single-season touchdown record (17).