NFL Week Five Surprise: Broncos Upset Eagles and Patriots Stun Bills

The final pair of undefeated squads in the NFL saw their perfect records broken during week five as both the Philadelphia Eagles and Buffalo Bills endured shocking losses on their own turf.

Denver's football team evolved from underdogs to headline-makers thanks to an spectacular comeback victory against the reigning Super Bowl champions Philadelphia, before hopping on a flight for Sunday's overseas contest.

The New England Patriots then visited Buffalo and ended Buffalo's perfect record with an impressive victory of their own in their first national television appearance in a full year.

Baltimore's team suffered a third straight defeat - their defensive struggles could be fatal for their play-off hopes - while Dallas, Indianapolis, and Detroit enjoyed decisive victories on yet another action-packed Sunday.

Broncos Defeat Champions

It wasn't just defeating the Super Bowl champions, but the manner of their 14-point comeback that made the Broncos' 21-17 victory in Philadelphia such a signature success.

Philadelphia had secured 10 games consecutively, 12 straight at home and 20 of their last 21 total before Denver's signal-caller Bo Nix engineered two touchdowns in five fourth-quarter minutes and a late field goal.

The Eagles are currently 4-1 but there is a big worry about the offence, which sits among one of the worst in the league. Receiver DaVonta Smith says they are not "in sync" with QB Jalen Hurts.

Denver's defence, which tackled Hurts on six occasions, had much to contribute with the outcome, and, combined with an established starting QB in Nix and elite coach in Sean Payton, they possess all the components to mount a legitimate playoff push.

The Broncos meet New York's Jets at Tottenham Hotspur Stadium on Sunday.

Primetime Patriots Upset Bills

Should the Broncos' victory was somewhat anticipated, few predicted the Patriots traveling to Buffalo and beating Josh Allen's Bills, but they accomplished it with huge character.

A first primetime game for Drake Maye produced a breakout performance as he directed a game-winning field goal drive in the final moments to win 23-20.

Maye was tough and made accurate passes at the right times, several to ex-Buffalo wideout Stefon Diggs, who delivered an outstanding performance for their coach's team.

Vrabel was expected to improve the situation in New England, but such a significant victory arrived earlier than many predicted.

New England's defensive squad bottled up Buffalo's offensive efforts during their surprising road victory.

Baltimore Postseason Hopes Over?

The season is becoming a nightmare for Baltimore, who were without multiple key defenders as they were hammered 44-10 by the Houston Texans.

It equaled their biggest loss at home, and dropping to 1-4 for this year means one of the preseason Super Bowl favourites have only a slim chance of making the play-offs.

The Ravens are currently 4-11 when missing superstar quarterback Lamar Jackson, who was hurt, but the real issue is a historically bad defensive unit that is the real problem - for a franchise that have been known for defensive toughness over the years.

Houston strolled to victory as Baltimore became the first team in modern NFL history to allow a minimum of 37 points in four of their first five contests. Their season is already over.

Lions, Bucs and Colts Reach 4-1

The Lions' running back duo Gibbs and Montgomery registered a touchdown in the same game for the 14th time - a shared NFL mark - as Detroit defeated the Cincinnati Bengals 37-24.

Victory made it four victories consecutively for the league's top scorers the Lions, but not one against opponents with a winning record.

A more surprising 4-1 team are Indianapolis. With Jonathan Taylor running in a hat-trick in their 40-6 hammering of Las Vegas and quarterback Daniel Jones appearing as a transformed player, they will be a tough match for any team.

Tampa Bay joined the four-win group with a thrilling 38-35 win in Seattle in which both teams traded nine scores in 10 impressive drives before the Seahawks faltered initially with a late turnover.

Chase McLaughlin kicked the game-winner with the last kick of the contest for the second time this year. Each of the Bucs' victories have been secured in the final moments.

Saints and Titans Get Help for Initial Victories

Given how the New Orleans Saints and Tennessee started this campaign, they needed help to secure their initial victories, and they got plenty thanks to some farcical mistakes from New York and Arizona.

Following a strong opening from first-year player Jaxson Dart, the Giants committed five turnovers - one was decisively returned for a touchdown - while also allowing Rashid Shaheed to find the end zone on an 87-yard catch and run as the Saints prevailed 26-14.

Arizona were more disastrous as they blew a substantial advantage primarily thanks to two massive mistakes.

Initially, Emari Demercado unexplainably dropped the football just before reaching the end zone for a long score.

More disastrous was to come when the Cardinals picked off Cam Ward close to their own goal line, then lost the football into the end zone for Tyler Lockett to score as the Titans ended a 10-game slide with a 22-21 victory.

Tyler Lockett scored among the most bizarre touchdowns we'll see this year.

That left the Jets as the sole victory-less squad remaining in the NFL after their bruising 37-22 loss by the Cowboys.

Jayden Daniels became the initial athlete in NFL history to eclipse 4,000 passing yards and 1,000 yards rushing in his initial twenty career games as he came back from being hurt to steer Washington to a notable 27-10 win at the Los Angeles Chargers.

Rico Dowdle was the standout performer for Carolina with 206 rushing yards in their exciting 27-24 victory over Miami.