Updating a previous item, Matt Maiocco of CSN Bay Area suspects that Michael Crabtree is missing training camp practices with a right calf injury -- not a sprained ankle. "Based on the Kinesio tape on the back of (Crabtree's) right lower leg," Maiocco tweeted, "it appears as if he has a strained calf muscle." The 49ers have declined to elaborate on the area or extent of Crabtree's right leg injury, so the beat writers had just been guessing. He's still considered day to day.