49ers building one of biggest single-season turnarounds in NFL history

The current San Francisco 49ers team has done an amazing turnaround. Where do they rank when it comes to NFL history?

2004 Chargers: From 4-12 to 12-4

 Mark Konezny/NFLPhotoLibrary

Marty Schottenheimer saw his team flips its mark from 2003 to ’04. The second season saw Drew Brees start 15 games. The Chargers’ run ended with a bitter playoff loss to the Jets.

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