Mark Murphy played eight years in the National Football League with the Washington Redskins.

Murphy was a Super Bowl champion in 1982. He was named a first-team All-Pro after leading the NFL in interceptions in 1983. And he was part of huge divisional rivalries with the Dallas Cowboys, Philadelphia Eagles and New York Giants.

So Murphy — who has been president and CEO of the Green Bay Packers since 2007 — has a deep appreciation for what the NFL’s greatest rivalry looks like.

That’s why Murphy — like many others — is remarkably impressed with what his Packers have done to the Chicago Bears over the past three decades.

When Green Bay defeated Chicago 20-19 on Sunday, it marked the Packers’ 11^e straight win in a rivalry that dates back to 1921. That is now the longest winning streak in the series’ 103-year history.

The Packers also improved to 51-15 since Brett Favre arrived in Green Bay in 1992. The Packers’ dominance over the past 30 years has helped them take a 108-95-6 lead (including playoffs) in a series that was largely controlled by the Bears for the first 70 years.

“I look at it from a broader perspective, especially in the 80s the Bears dominated us,” Murphy said. “But in the bigger picture, things fluctuate back and forth. But this run with Brett Favre and Aaron Rodgers has been huge. And Matt (LaFleur) hasn’t lost now. I’m quite surprised. It’s pretty incredible. ”

It certainly is.

Under head coach Mike Ditka, the Bears won twelve of fourteen games against Green Bay between 1985 and 1991 and took an 80-57-6 series lead. What has happened since then is nothing short of remarkable.

Mike Holmgren started the fun by going 12-2 against the Bears (.857) from 1992 to 1998. Holmgren also won his last 10 games against Chicago.

Ray Rhodes was 1-1 (.500), Mike Sherman was 8-4 (.667), then Mike McCarthy was a sensational 19-7 (.731), including a win over the Bears in the 2010 NFC Championship Game.

Joe Philbin was 0-1 as Green Bay’s interim head coach in 2018, and now LaFleur has taken things to another level: an incredible 11-0 against perhaps his biggest rival.

Since the start of the 1992 season, the Packers’ winning percentage against Chicago is a whopping .773.

“Before Favre, they were way ahead,” Murphy said of the Bears. “But we came back and it’s great for the league. A great rivalry and games like this just add to the mystique of the rivalry.”

The biggest key to Green Bay’s dominance was stability at the quarterback position.

Favre, who played 16 years in Green Bay and was a first-ballot Hall of Famer, went 22-10 against Chicago from 1992 to 2007, a .688 winning percentage.

Amazingly, Rodgers took it a step further.

Rodgers went 25-5 against Chicago, including a 12-1 mark in his last thirteen games against the Bears. Rodgers defeated the Packers’ oldest rival in the 2010 NFC Championship Game, beat them with the division on the line in the 2013 regular season finale and beat them in every conceivable situation.

In fact, only two quarterbacks in NFL history have at least 25 wins against a single franchise with a better winning percentage than Rodgers against Chicago.

• Tom Brady won 36-3 against Buffalo (.923).

• Pittsburgh’s Ben Roethlisberger was 26-3 against Cleveland (.897).

Jordan Love improved to 3-0 against Chicago as the Packers prevailed on Sunday. And even former backup Brett Hundley won 1-0 against the Bears when he filled in for the injured Rodgers in 2013.

“Man, it’s amazing,” Packers defensive tackle Kenny Clark said. “It’s the longest rivalry in NFL history, and the most bullshit during the offseason. That’s the core fan base, and players, or whatever the case may be. You hear most of the bullshit from the Bears, so to take it out on them and make history today is huge.”

Afterward, Murphy congratulated the players in a cheerful Green Bay locker room and soaked in Green Bay’s latest victory over its archrival.

Murphy will retire next summer, but knows he enjoyed the salad days in this rivalry. And he certainly went out with a bang on Sunday.

“It’s really exciting,” said Murphy, who was also athletics director at nearby Northwestern from 2003 to ’07. “We were very lucky. Obviously, a lot of credit to (former general manager) Ted Thompson and (current GM) Brian (Gutekunst) for a lot of this. It was definitely a lot of fun to take part in so many of these games.”