Crabtree (calf) returned to practice Thursday, Matt Maiocco of CSN Bay Area reports. Crabtree's participation level is unknown, but his presence bodes well for active status heading into Week 1 in Dallas. Although his odds for taking the field should be clarified by the release of Friday's injury report, he missed 10 days of training camp 2010 with the first calf injury of his career. If he sits Sunday, the bulk of the targets would land in the hands of Anquan Boldin and Vernon Davis.