♪ Narrator: During a tense tiebreak in the first set, the umpire ruled McEnroe's serve out.

It would become one of the most iconic moments in tennis history.

Umpire: It was too long to the stripe.

The ball--the chalk came up all over the place.

It was a bit of a spread, Mr. McEnroe.

You can't be serious, man.

You cannot be serious!

That ball was on the line.

Chalk flew up.

It was clearly in.

[Fans applauding] How can you possibly call that out?

How many are you gonna miss?

So he's walking over.

Everyone knows it's in in this whole stadium, and you call it out?

Explain that to me, will you?

The linesman called a fault because the ball was on this side of the court...

The chalk came up.

It doesn't matter.

No, no.

The very fact is there is a spread of chalk, as you can see, Mr. McEnroe.

West: Tennis really does have to uphold authority in some shape or form.

McEnroe, voice-over: It's ironic because my dad represented me, and he was a lawyer, so he'd say, "Why do you question these calls?

You're better than them.

Just go out and play."

And he'd say it, like, "You're better than them!"

You know, he'd scream at me.

"But if you do question a call, just make sure you don't curse."

"Oh, OK." West: Fred Hoyles has been refereeing at Wimbledon for many years.

We're not going to have a point taken away because this guy's an incompetent fool.

You know that?

That's what he is.

Ross: You know, the Britishness of Wimbledon is kind of that stiff upper lip, "OK, that was "clearly a wrong call, but I won't say anything "because it would be untoward and might make others uncomfortable."

And McEnroe was like, "**** that."

[Mix of cheering and applause, booing] ♪ Threlfall: So McEnroe has lost the point.