The new US Open champion was unprepared for the reward. (Getty)

Sloane Stephens was flawless in winning the biggest match of her career, 6-3, 6-0 on Saturday. But her show of friendship with her final opponent, Madison Keys, was almost as memorable.

Comic relief came when Stephens found out that her winner’s check nearly doubled her career earnings.

Yes, the winner gets a whopping $3.7 million.

She really couldn't believe it. 

Jokes aside, the two friends paid tribute to each other, and Keys was all class in a very tough moment. 

"Sloane is truly one of my favorite people...If there's someone I have to lose to today, I'm glad it's her," Keys said. 

The new US Open champion reciprocated similar feelings for Keys.

Stephens deserves to lap up all of the attention after her incredible fortnight. 

Her celebration on Saturday night was followed by the customary champion's photoshoot, held this year in Central Park. 

Cloud 9 ????????

A post shared by Sloane Stephens (@sloanestephens) on

Stephens moves up to No. 17 for her efforts in New York.