49ers second-year RB Marcus Lattimore is participating in rookie minicamp. Lattimore was expected to sit out minicamp with soreness in both of his legs, but the 49ers have cleared him to practice on a limited basis. While it's a good sign that he's healthy enough to return to the field, Lattimore remains questionable for the start of training camp. Lattimore can participate in rookie camp because he spent all of 2013 on the reserve/NFI list.