A weekly examination of the 49ers' ESPN.com Power Ranking:Preseason: 3 | Last Week: 3 | ESPN.com Power Ranking since 2002Could anything make San Francisco 49ers fans upset on Tuesday? They might even let this one slide.The 49ers dropped one spot in the latest Power Rankings, despite enjoying one of the most exciting victories in recent memories. The 49ers closed out Week 16 with a wild 34-24 win Monday night over Atlanta in what was likely the last game at Candlestick Park.