"Seeing Ash Barty take out the Roland Garros championship means a lot", Mikayla said. "They are truly an incredible group of girls that I know I'll have a relationship with for the rest of my life and a friendship with for the rest of my life", she continued. She's pretty low-key and humble. "We'd done a 12-week training block and she was so out of shape it wasn't amusing", he said.
"That's kind of the next point, the next goal, the next situation I could see myself in", Barty said about the idea of trying to overtake Osaka for the top spot.
The 23-year-old Australian became the first woman from her country in 46 years to clinch the French Open singles title when she swept aside Czech teenager Marketa Vondrousova 6-1, 6-3 in the summit showdown of the Roland Garros on Saturday.
As Barty acknowledged after her win, Goolagong Cawley's extraordinary career paved the way for future generations of both Indigenous and non-Indigenous tennis stars. Her time away included a short stint as a professional cricketer - a game at which she excelled after picking it up from scratch, and loved for its team component. I don't think she is a one-slam wonder.
Barty, for her part, responded simply with "Sister".
So why does it take winning a Grand Slam for a champion like Barty to get the attention she deserves?
In 2011 she won junior Wimbledon and was victorious at the Nottingham Open a year ago in addition to reaching the decider at the Birmingham Classic 12 months earlier. "She now knows she's got one, that she can go for the others".
It was interesting to hear the verdict of Martina Navratilova, who also completed the French Open-Wimbledon double during her peak years of 1982 and 1984.
Australian scribe Leo Schlink discusses the men's tournament and Ash Barty's phenomenal run to the women's title.
Barty is the shortest player in the current top 10 and dwarfed by recent former All England champions Karolina Pliskova (1.86m), Garbine Muguruza (1.82m) and Serena WIlliams (1.75m).