A weekly examination of the 49ers' ESPN.com Power Ranking:Preseason ranking: 3 | Last Week: 10 | ESPN.com Power Ranking since 2002The San Francisco 49ers' short journey out of single-digit rankings is over after a 35-11 win at St. Louis in Week 4. Last week, the 49ers fell to No. 10 after dropping to 1-2. It was the team's lowest ranking since Week 5 of 2011. The 49ers were never ranked lower than No. 5 last season.Now, they appear to be on the right track again.