The 21-year-old was a double break down and misplaced the primary set in opposition to World No. 5 Jessica Pegula, however Raducanu determinedly fought again to take the second with a tie-break, saving a match level within the course of.
Into the essential third, Raducanu common a powerful displaying to interrupt Pegula in as many video games, utilising the court docket in model.
And the Bromley tennis ace charged residence from there, recording a 4-6 7-6 (8-6) 7-5 victory for her first-ever win over a high 10 opponent.
She mentioned: “I’m fairly drained proper now however I need to thank everybody for getting me by way of some actually tough moments in that match.
“It’s extremely tough if you’re enjoying somebody who’s so on type, Jessica got here off the again of a terrific run in Berlin, little question she is feeling assured on the grass.
“I’m actually happy with how I managed to navigate some robust conditions, this match is among the extra significant ones to me.”
Raducanu faces one other robust take a look at in opposition to sixth seed Daria Kasatkina within the final eight however the wildcard will likely be stuffed with confidence after a stirring second-round success.
For the reason that event’s inception 50 years in the past in 1974, it’s the second time three or extra British gamers have made the quarter-finals on the south coast when Anne Hobbs, Virginia Wade and Michelle Tyler all made it to the final eight in 1978.
Katie Boulter and Harriet Dart joined Raducanu in girls’s singles as Billy Harris additionally secured his last-eight spot within the males’s singles.
After lacking the grass swing final yr to have three surgical procedures, Raducanu believes the energy of British tennis is coming into its personal with Wimbledon proper across the nook.
She added: “It’s actually good wholesome competitors, all of us see one another progressing into the following spherical and all of us simply need to be part of them, no person desires to be left behind.
“That’s the manner it ought to be, we ought to be pushing one another and that’s the case in males’s and girls’s, we’re all doing very well, particularly on the grass.
“It’s a testomony to how laborious we’ve been coaching and placing the work in and I believe we’re all doing a reasonably good job.”
For the most recent motion on the British summer time grass court docket season, try the LTA web site