"I'm not even thinking about, like, when I'm going home. I have no idea when I'm going home. I have no idea what I'm doing tomorrow. I'm just really trying to embrace the moment, really take it all in," Raducanu said.

"I definitely think it's the time to just switch off from any future thoughts or any plans, any schedule. I've got absolutely no clue. Right now, no care in the world, I'm just loving life."

So striking was her performance that it eclipsed headlines for world number one Novak Djokovic's attempt at a calendar Grand Slam, what many had presumed would be the main source of chatter on the plaza at the Billie Jean National Tennis Center.

There was no one perhaps more surprised by her run than Raducanu herself, as she told reporters she had her flight booked for the end of the qualifying rounds after finishing as the runner-up at the Chicago Challenger and contending in tournaments in Pennsylvania and California.