49ers second-year RB Marcus Lattimore revealed early this week that he is dealing with soreness in both of his legs. Lattimore put a positive spin on it: "About 6-7 months ago, it would just be my left leg that would be sore. Now I'm balanced on both legs. Feeling good, man." Lattimore will not participate in the 49ers' rookie minicamp, and it's unclear when he'll be ready to practice. "(He'll be) going at the speed the doctors allow him and his body allows him to go," coach Jim Harbaugh said.