SAN FRANCISCO - AUGUST 25: Mike Iupati #77 of the of the San Francisco 49ers blocks during a NFL game against the Minnesota Vikings, August 25, 2013, at Candlestick Park in San Francisco, California. (Photo by Tom Dahlin/Getty Images)
SAN FRANCISCO - AUGUST 25: Mike Iupati #77 of the of the San Francisco 49ers blocks during a NFL game against the Minnesota Vikings, August 25, 2013, at Candlestick Park in San Francisco, California. (Photo by Tom Dahlin/Getty Images)