In an event commemorating Raducanu and other British champions from Flushing Meadows, she went to court with the Duchess of Cambridge in London.
Kate is a patron of the Lawn Tennis Association (LTA), and Raducanu called it a “perfect day for some tennis”.
Raducanu stunned the tennis world when she won the US Open in an extraordinary series in which she didn’t drop a set.
She became the first ever qualifier – male or female – to win a grand slam title, after coming in 150th place in the world.
However, at Friday’s event, she announced that she split with coach Andrew Richardson after her win.
Richardson accompanied Raducanu to the US Open and coached her on her remarkable journey to the grand slam title.
She says she is now looking for a more experienced coach.
“Where I was after Wimbledon, I was around 200 in the world, and at that point I thought Andrew would be a great coach to test, so we went to the States, but I didn’t even dream of getting the US Open and with the run I did and now I’m 22nd in the world, which is pretty crazy for me,” she said.
“I feel like at this stage in my career and when I’m playing the best players in the world, I realized that now I really need someone who’s had that WTA Tour experience at the highest level, which means I looking for someone who has been on that level and knows what it takes.
“And especially now, because I’m so new to it, I really need someone to guide me who’s already been through that.”