5 days ago In the five years since Raducanu stunned the world by winning the US Open, a question has often been posed by those seeking answers about her progress - or lack of it.
Why did she not continue with the guy who guided her to that unfathomable victory?
At the time, the split was often portrayed as a natural parting of the ways at the end of Richardson's contract - as he wanted to focus on his job at the Ferrer Academy.
Richardson later disputed that narrative,, external indicating he would have been happy to carry on.
It was also suggested Raducanu wanted a coach with greater experience of the WTA Tour.
Wherever the truth lies, enough water has passed under the bridge for the pair to attempt to revive their spectacular winning formula.
Raducanu played with an aggressive fearlessness during that unforgettable run at Flushing Meadows, taking returns early and hustling her opponents as she did not drop a set.
She has rarely played with the same intent, belief and freedom since.
After a dismal Australian Open second-round exit in January, she discussed at length how she yearned to play in "a way more similar to how I was playing when I was younger".
Raducanu feels more relaxed - and therefore plays better - when she is surrounded by long-time confidants who she trusts implicitly.
Therefore, it seems natural that the carousel nature of her appointments - having gone through several full-time coaches, as well as a series of ad hoc guidance - goes back to almost the very start.
After previously turning to Nick Cavaday and Mark Petchey, who have both known her since she was a child, Richardson is the latest familiar face who will attempt to help her kick-start a career which has failed to live up to its early promise.
English (US)·