A weekly examination of the 49ers' ESPN.com Power Ranking:Preseason: 3 | Last Week: 7 | ESPN.com Power Ranking since 2002The San Francisco 49ers have clearly put their early-season trouble behind them. After getting blown out by a combined 56-10 in Weeks 2 and 3 by Seattle and Indianapolis (it was the first time the 49ers had lost consecutive games under coach Jim Harbaugh), the team has straightened itself out.The 49ers have won three straight, by a combined score of 101-34.