The 2025 NFL season is nearly 25 percent complete, as teams are playing their fourth game of a 17-game season during Week 4.
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 4-0 start through four games.
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.
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Here is a look at the group of perfect NFL teams through Week 4, with a few others looking to join the club in Sunday afternoon’s late slate.
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NFL teams still undefeated
Philadelphia Eagles
The defending Super Bowl champs just keep finding ways to win.
Philadelphia’s season already includes several statement wins, as it opened the season with a divisional win over the Dallas Cowboys before traveling to Kansas City to beat the Chiefs in Week 2. Weeks 3 and 4 have been just as thrilling, as the Eagles came back from 19 points down to hand the Rams their first loss, and followed that by staving off a comeback to hand the Buccaneers their first loss of the year.
Buffalo Bills
The Bills opened the season with a statement come-from-behind victory in primetime and have ridden that momentum through the next three weeks of the season. Buffalo avoided a letdown in Week 4, fending off New Orleans to earn a win.
It’s early, but the Bills are helping themselves greatly in the uber-competitive AFC.
San Francisco 49ers
The Niners put their perfect 3-0 record on the line with the Jaguars paying them a visit in the Bay.
San Francisco opened the season with a divisional win in Seattle and, despite losing QB Brock Purdy to injury, picked up gritty wins over the Saints and Cardinals. With Purdy returning to the field in Week 4, the 49ers will look to stay perfect.
Indianapolis Colts
Perhaps the most pleasantly surprising team on the list is Daniel Jones’ Colts, who opened the year with dominant wins over the Dolphins and Titans, which bookend a gritty Week 2 win over the Broncos.
Indianapolis faces yet another tough test as it travels to the West Coast to put its perfect record on the line against the Rams.
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