A year ago, Bianca Andreescu was ranked outside the WTA's top 200 after losing in the first round of US Open qualifying.
Thanks to winning her first Grand Slam title at Flushing Meadows, Andreescu jumped 10 spots to a career-high No 5 in the rankings this week, while Ash Barty again replaced Naomi Osaka at No 1.
Andreescu's 6-3, 7-5 win over Serena Williams in the final continued the 19-year-old Canadian's rapid rise from 178th at the end of last season. She is the first woman in the Open era, which began in 1968, to win the US Open in her main-draw debut. This was only her fourth career appearance at any slam.
"I don't think I was ever as composed as I am now, or even a year ago. I would get really down on myself and I would get very negative thoughts going through my mind. I would smash rackets. I'd just yell at myself during matches. Actually not even during matches, even during practice, too," Andreescu said.
"But I found that way wasn't working to my advantage at all. So I started seeking some advice from other people.