Australian Alex de Minaur has been hailed for a classy gesture immediately after winning the Washington Open final in extraordinary circumstances.

De Minaur miraculously saved three championship points before defeating Alejandro Davidovich Fokina 5-7 6-1 7-6(3) to capture one of the biggest titles of his career.

WATCH THE VIDEO ABOVE: Alex de Minaur consoles opponent after winning final.

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The seventh seed came back from 2-5 down in the deciding set and saved match points on his own serve at 4-5.

Davidovich Fokina was in tears after the match as he struggled to comprehend how he failed to win.

As the shattered Spaniard sat on his bench, De Minaur came over and consoled his beaten opponent.

He can be seen saying words of encouragement to his rival and putting his arm around his shoulder.

Fans quickly praised De Minaur for the move.

“Not sure what you can even say in this moment if you’re Alex, but consoling him like this literally makes my heart happy,” one fan said.

“What a guy! Alex,” another said.

“Demon is a class act,” another said.

“All class from Demon. Heartbreaking for ADF for another finals loss. Positive takeaway for ADF is it’s only a matter of time till he wins his first career title!” another said.

Davidovich Fokina looked set to win the match earlier in the third set, but de Minaur produced his trademark scrambling with an incredible passing shot that came after a miraculous lob that landed right on the line.

It continued an unwanted trend for Davidovich Fokina, who missed out on two championship points in Delray Beach this February and lost the Acapulco final in March.

“You’re way to good to not have one of these (trophies). It’s coming for sure,” de Minaur said to his opponent.

“You deserved it today. I just got lucky. You are a hell of a competitor, a hell of a player. No one on the tour wants to play you. This is not the end, this is only going up for you.”

The Spanish 12th seed was broken early in the opening set but responded immediately for 2-2. He gained the advantage again in the 11th game before serving it out.

It lit a fire under the Aussie, who raced through the second set in just 36 minutes, winning 6-1.

But de Minaur dropped serve to trail 4-1 in the decider, before breaking back when Davidovich Fokina was serving for the title at 5-3.

He scrambled from 0-30 and on his opponent’s third match point a desperate lob clipped the sideline and helped de Minaur turn the point and final around.

De Minaur will return to world No.8 on the back of reaching the final.

“It’s something about this court. I did it in 2018 ... and honestly, I just kind of knew I could do it,” said the Aussie, who saved four match points against Andrey Rublev that year but lost in the decider.

“I just backed myself and I told myself to commit no matter what and if I lost this match it was going to be on my terms. Today it went my way. I’ve had a couple of brutal ones not go my way, so I’m glad this one went my way.”

- With AAP