Dorsey (arm) was placed on season-ending injured reserve Saturday, Matt Maiocco of CSNBayArea.com reports. Dorsey spent most of the year on short-term on IR after undergoing biceps surgery in August, and he did not end up playing after being activated late last month. Cornerbak Marcus Cromartie and guard Andrew Tiller were added to the active roster, with NaVorro Bowman (knee) moved to IR along with Dorsey.