Damon and his wife were pulled over at around 1:23 a.m. on Feb. 19 in Windermere, Fla. after cops say he was swerving on the road and driving erratically.

Once a cop stopped Damon ... body cam footage captured the 47-year-old ex-Yankee and Red Sox outfielder admitting to drinking before getting behind the wheel.

Then, an intense standoff between the officer, the ex-MLB star and the baseball player's wife ensued.

In the video, you can see the officer ordered Damon and his wife, Michelle Mangan-Damon, to stay in the car, but neither complied ... and a pushing and shoving squabble broke out.

At one point, the officer grabbed Mangan-Damon's wrist ... before Johnny got involved to separate the two.

The bumping and pushing got so heated, the officer's body camera was actually knocked to the ground.

Fortunately for all parties, backup arrived, and officers were able to settle down the scene.

Damon and his wife repeatedly talked about their support for cops, mentioning over and over, "Blue lives matter."

And, at one point, Damon brought up his affinity for Trump to a cop, saying "Hey, bro, I'm a good f***ing guy. I know people are trying to target me because I'm a Trump supporter."

Damon was then asked to complete some field sobriety tests ... but you can see on the video, it doesn’t look like he exactly passed any of them with flying colors.

Damon was ultimately arrested and booked on multiple charges, including driving under the influence and resisting arrest without violence.

A police report later showed cops said Damon's blood-alcohol level was .30, nearly FOUR TIMES the legal limit.

Damon's wife was also arrested after the stop, and booked on charges of battery on a law enforcement officer and resisting arrest with violence.

Court records show Damon pled not guilty to his DUI charge last month. He's due back in court in May.