‘The 49ers ranked fifth in 2011 and 2012, and second in 2013 in percentage of total yards gained on the ground. The figures were 41.1 percent (2011), 43.0 (2012), and 42.5 (2013). In 2013, only the Bills ranked higher as they led the NFL with 42.6 percent of their total offense coming via the ground game. San Francisco’s 6,736 combined rushing yards were the second-highest three-year total in franchise history.’