Mercury Morris can pop the champagne. With the Washington Football Team's 23-17 upset over the Pittsburgh Steelers on Monday, the 1972 Miami Dolphins can celebrate their achievement again.

Washington handed Pittsburgh its first loss of the 2020 season, ensuring that the '72 Dolphins would, for at least one more year, remain as the only team in the Super Bowl-era to pull off an undefeated regular season and playoffs.

Linebacker Jon Bostic intercepted a tipped Ben Roethlisberger pass with two minutes to go in the fourth quarter and Washington up by 3, essentially cinching the road victory for the WFT.

Washington, who entered the Week 13 matchup as seven-point underdogs, moved to 5-7 on the 2020 season, tied with the New York Giants atop the NFC East.

At 11-1, the Steelers — who were playing their third game in 12 days (this time against Washington) because of COVID-19 postponements, which some Pittsburgh players were not happy about — are neck-and-neck with the Kansas City Chiefs (11-1) for the No. 1 seed in the AFC.

The 1972 Dolphins went 14-0 and won all three playoff games. Led by Hall of Fame head coach Don Shula and QB Bob Griese, Miami capped off its historic season with a 14-7 victory in Super Bowl VII over … Washington (then known by a different name).

Alex Smith completed 31-of-46 passes for 296 yards and a touchdown on Monday evening for Washington, while Logan Thomas caught nine balls for 98 yards a TD.

Steelers QB Ben Roethlisberger attempted 53 passes, completing 33, and racked up 305 yards and two touchdowns, plus the costly interception to Bostic.

After trailing for the first three quarters, the Washington Football Team outscored Pittsburgh 13-3 in the final frame.

Pittsburgh will face the Buffalo Bills in Week 14, while Washington will face the San Francisco 49ers.