NFL teams still undefeated: Eagles, Bills fall in Week 5 to end hopes of perfect season

Gilbert McGregor

NFL teams still undefeated: Eagles, Bills fall in Week 5 to end hopes of perfect season image

The 2025 NFL season is nearly 30 percent complete, as teams are playing their fifth game of a 17-game season during Week 5.

While some notable teams have stumbled out of the gates, a select few contenders have orchestrated flawless starts to the new season. Going undefeated may not be in the cards, but an undefeated season is not possible without a perfect start in the opening five games of the year

The defending champion Philadelphia Eagles became the first team to reach four wins in 2025, earning a statement win over the previously undefeated Tampa Bay Buccaneers. Philly was quickly joined by the Buffalo Bills, who moved to 4-0 by holding off the feisty New Orleans Saints.

In Week 5, the Eagles looked poised to continue their win streak, opening up a 14-point lead over the Denver Broncos at the start of the fourth quarter.

But the Broncos came storming back, downing their highly-touted opposition to snap their unbeaten start. Later that day, Buffalo saw its perfect start vanish courtesy of Drake Maye and Stefon Diggs' heroics.

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With that, here's a look at the state of the league's perfect sides after a wild Week 5 slate of games.

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NFL teams still undefeated

The 1972 Miami Dolphins can rest easy. Both the Eagles and Bills lost on Sunday, ensuring there are no perfect sides left in the NFL this season. 

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Gilbert McGregor

Gilbert McGregor first joined The Sporting News in 2018 as a content producer for Global editions of NBA.com. Before covering the game, McGregor played basketball collegiately at Wake Forest, graduating with a Communication degree in 2016. McGregor began covering the NBA during the 2017-18 season and has been on hand for a number of league events.