https://www.nytimes.com/athletic/60...no-vukov-wta-ban-report-elena-rybakina-coach/
"Portia Archer, the chief executive of the WTA Tour, informed them of the decision on January 31. Archer issued Vukov a three-page summary in which she stated that Vukov has violated the tour’s code of conduct by calling Rybakina 'stupid' and telling her that without him she would 'still be in Russia picking potatoes,' according to a source briefed on the investigation who has reviewed the letter and is in contact with Rybakina’s camp.
"Archer also stated in the letter that investigators had concluded Vukov had made Rybakina cry and subjected Rybakina to mental abuse and pushing her beyond her physical limits, which caused Rybakina to become ill.
"Perhaps most importantly, Archer said she had concluded that Vukov had harassed Rybakina her [sic] by refusing to leave her alone during the U.S. Open in the weeks following her dismissal of him, when he sent her multiple texts. In addition, he violated the 'no contact' directive that was part of the WTA’s provisional suspension of him."