Michael Crabtree (Achilles') is active and is expected to start in his season debut against the Rams on Sunday. Crabtree's Achilles' is 100 percent healthy after he tore it in May, but he's not yet in tip-top football shape. Crabtree is expected to play 60-65 percent of the snaps, making him a borderline WR3/4 for Week 13. Inactive for the 49ers are WR Quinton Patton, WR Jon Baldwin, CB Tarell Brown, OG Mike Iupati, TE Garrett Celek, DT Quinton Dial, and DL Tank Carradine.