The big-hitting 19-year-old showed no signs of intimidation playing against one of her idols and was instead a picture of poise as she dismantled Swiatek’s serve early on to grab control of the match and never looked back.

“I don’t know what to say, I mean, complete just disbelief right now and I am on cloud nine,” Eala said in her on-court interview.

“It’s forever in my heart.”

Swiatek, who was playing the match with added security after being verbally abused by a spectator at the weekend, failed to hold serve throughout the first set while Eala was swinging freely as she unleashed winners from all over the court.

Five-times Grand Slam champion Swiatek hit a staggering 19 unforced errors in the opening set and then received some advice from her coach before briefly leaving the court.

In the second set Eala managed to overturn a 4-2 deficit and then held her nerve while Swiatek tried to serve out the set at 5-4 before ultimately closing it out with her eighth break of the match.

For Eala, the victory over Swiatek marked the third Grand Slam winner she had knocked out of the women’s draw after earlier wins over Australian Open champion Madison Keys and 2017 French Open champion Jelena Ostapenko.

Up next for Eala will be the winner of the day’s other quarterfinal between American fourth seed Jessica Pegula and 2021 US Open champion Emma Raducanu of Britain.

On the men’s side Serbian fourth seed Novak Djokovic, who is seeking a record seventh Miami title, caps the evening session against American 24th seed Sebastian Korda for a spot in the semi-finals.

Bulgarian 14th seed Grigor Dimitrov will face Argentine Francisco Cerundolo in the day’s other quarter-final while German top seed Alexander Zverev faces Frenchman Arthur Fils in a last-16 clash that was postponed due to rain on Tuesday.