But Vukov refused to sit silently - and after appealing the WTA's ban - he won his case and rejoined Rybakina's team at the Cincinnati Open. And that is already having a positive impact on the Kazakh, who is through to the semifinal after ousting top seed Aryna Sabalenka 6-1 6-4.

Kazakhstan’s Elena Rybakina produced arguably the best performance of her season on Friday night. The 26-year-old defeated the reigning world number one, Aryna Sabalenka, in the quarterfinal of the

Elena Rybakina was praised by her old coach Goran Ivanisevic, with the Croatian stating that she should be winning more Grand Slams in the future. The 26-year-old can only boast one Grand Slam,

The day after Rybakina’s announcement, it emerged that Vukov had been suspended by the WTA Tour amid an investigation into a breach of their code of conduct. Vukov was handed a one-year ban in February, but he was cleared to resume coaching in the tour last week after a successful appeal.

Taylor Fritz is chasing his second Masters 1000 of his career in Cincinnati. He knocked out Emilio Nava and Lorenzo Sonego to