49ers, UDFA. Stanford: Well built but average size.

Positives: Adequate acceleration and change-of-direction skills. Fair concentration. Great track speed. Fairly strong upper body.

Negatives: Suspect hands. Dances too much as both a returner and receiver. Holds ball too loosely in traffic. Injured much of 2010. Had three concussions from 2010-2011. Missed bowl game because of concussions. Suspect balance making cuts.

Projection: Doesn’t seem to have enough skills to start in the NFL, but could contribute if he avoids concussions. His concussion history is also too much of an issue to ignore. Won’t contribute much, if at all, with Moss, Manningham, Crabtree, and Jenkins ahead of him on depth chart.