It was yet another upset win for Fernandez but hardly a shock considering she had already knocked out four-time Major champion Naomi Osaka in the third round and three-time Grand Slam winner Angelique Kerber in the fourth.

If there was any lingering worry that the fearless Canadian would buckle under the mounting pressure, Fernandez removed it by prevailing in a nerve-jangling third set tiebreak 7-5 to clinch a spot in the last four.

Rated one of the best players yet to win a Major, Svitolina might have fancied her chances of returning to the US Open semifinals against a 73rd ranked teen.

But Fernandez, who celebrated her 19th birthday on Monday, has shown that she is no ordinary teenager after registering a string of upsets that have made her a Flushing Meadows darling.