San Francisco 49ers coach Jim Harbaugh relayed before training camp anecdotal evidence speaking to receiver Anquan Boldin's professionalism. So serious about his job was Boldin, the coach said, that sitting next to the 11th-year veteran in the lunchroom wasn't always the most interactive social experience."The guy isn't a small talker," Harbaugh said.Harbaugh noted that Boldin's serious approach to his work was good for the 49ers' younger players.