NFL teams that went undefeated in December 

Kansas City Chiefs quarterback Patrick Mahomes
Kansas City Chiefs quarterback Patrick Mahomes

The NFL's December Invincibles:#4-#7

#4 - Kansas City Chiefs

Kansas City Chiefs quarterback Patrick Mahomes
Kansas City Chiefs quarterback Patrick Mahomes

The Kansas City Chiefs have the longest active winning streak in the NFL. They have won their last eight games in a row, including all four in December. They defeated the Denver Broncos, the Las Vegas Raiders, the Los Angeles Chargers and the Pittsburgh Steelers. They went 3-0 against the AFC West division.

The Chiefs have been dominant on both sides of the ball during their recent success. They outscored their opponents 140-56 in December, averaging a 35-14 victory. They are the hottest team in the NFL since opening the season with a mediocre 3-4 record.

#5 - Los Angeles Rams

Los Angeles Rams Matthew Stafford and Cooper Kupp
Los Angeles Rams Matthew Stafford and Cooper Kupp

The Los Angeles Rams entered December with a three-game losing streak. They rebounded in a big way by winning all four of their games in the month. They defeated the Jacksonville Jaguars, the Arizona Cardinals, the Seattle Seahawks and the Minnesota Vikings. By defeating the Cardinals, they took over control of the NFC West divisional race.

Quarterback Matthew Stafford has had a strong season but has been outshined by Cooper Kupp, one of the top offensive players in the NFL this year. Kupp leads the league in a ton of statistical categories, including his 132 receptions, 1,767 receiving yards and 14 receiving touchdowns. He is one of the favorites to win the 2021 Offensive Player of the Year award and a dark horse for the NFL MVP award.

#6 - Miami Dolphins

Miami Dolphins wide receiver Jaylen Waddle
Miami Dolphins wide receiver Jaylen Waddle

The Miami Dolphins are the comeback story of the year so far in 2021. They won their first game of the season against the New England Patriots but followed it with seven consecutive losses. The season looked lost for them, but they turned things around and are currently on an active seven-game winning streak. It is one of the biggest turnarounds in NFL history.

Included in their current winning streak is the undefeated month of December. They won all three of their games: against the New Orleans Saints, the New York Giants and the New York Jets. Their defense has been the key to their hot streak. They are allowing just 11.7 points per game during their active winning streak.

#7 - Philadelphia Eagles

Philadelphia Eagles quarterback Jalen Hurts
Philadelphia Eagles quarterback Jalen Hurts

The Philadelphia Eagles struggled through the first part of the 2021 NFL season but have come on strong recently. They have won five of their last six games, including a perfect 3-0 record in December. They defeated the Washington Football Team, the New York Giants and the New York Jets. They averaged a 31-15 victory during their undefeated month.

The biggest key to the Eagles success has been their rushing attack on offense. They used a committee approach while averaging 163.2 rushing yards per game this season, the most in the NFL. Jalen Hurts is one of the best rushing quarterbacks this year. He has accumulated 740 rushing yards. Only Lamar Jackson, with 767, has more among all quarterbacks this season.

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