NEW YORK — The San Francisco 49ers sent quarterback Alex Smith to the Kansas City Chiefs and acquired wide receiver Anquan Boldin from the Baltimore Ravens in trades announced Tuesday pending physical examinations. In exchange for Smith, the 49ers get an undisclosed 2013 draft choice, and a conditional pick in the 2014 NFL Draft from Kansas City, the team said on the first official day of the new National Football League calendar. Smith, the No. 1 pick of the 2005 draft by San Francisco, had been the starter for the Niners before losing his job to Colin Kaepernick, who shined after filling in when Smith suffered a concussion last season. — Reuters