Examining the San Francisco 49ers’ Super Bowl Window

The San Francisco 49ers' Super Bowl window has been a divisive topic of discussion this offseason. 

The Niners have been the victim of tough luck on the NFL biggest stages, losing by a combined 12 points in their last three playoff runs—twice falling in the NFC title game and once in the Super Bowl. Many wonder how much longer the Red and Gold can continue to be Lombardi Trophy contenders with so much heartbreak in their recent history.

Is there any historical evidence that suggests teams struggle to extend their regular-season dominance to a fourth straight season? ...

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