The 18-year-old secured her place in the history books by defeating Canada's Leylah Fernandez to become the 2021 US Open champion.
Ranked 150 in the world before play at Flushing Meadows, Raducanu won three qualifying matches to enter the tournament.
The teenager didn't drop a set on her way to glory and became the first British woman since 1977 to win a Grand Slam - Virginia Wade being the last at Wimbledon.
Wade was in attendance to witness Raducanu's achievement on Saturday and now Raducanu has shot up to No.23 in the world.
She is also the youngest player to win a Grand Slam since Maria Sharapova at Wimbledon in 2004 at the age of 17.
The odds of Raducanu replicating Sharapova's success on the grass cut has shrunk following her performances in New York.
Best is yet to come
While the result was a surprise to most, Raducanu's former coach Mark Petchey knows her abilities first-hand and likened her to Sir Andy Murray before claiming she could establish herself among the elite once she improves further still.
"From the first day that I met her at the National Tennis Centre, she does have something a little bit special," Petchey told Good Morning Britain.
"I think she reads a tennis ball. I can't really explain it in a scientific way when I've worked with Andy Murray for a year as well and obviously watching Andy from 16.
"He also had this ability to be able to pick up a tennis ball and in a sport that is played in fractions of seconds, obviously, that allows you to do very special things and Emma has that.
"I think everything could be improved; I think her service is still a work in progress. I think her net game is going to get even better as you get a greater understanding of where to be.
"I think her room for improvement is not just incremental gains, I think they are substantial and I honestly think she is going to rule the world."
Asked how she handles the new level of fame, Wade told BBC Breakfast: "That is probably the hardest thing these days, to handle that and so she's got to have very good advice on that.
"Just not to do too much and not to play too much because you don't want to play that much when there's so much expectation on you and then you get stale or you lose your motivation, so that is a balance that's difficult to get.
"I think for Emma, she needs to understand just how good she really is, but you have to constantly work at that to maintain it, she has to have that self-belief - if you believe that you're better than the others, you're going to beat them."