World number 1, an outspoken vaccine sceptic, will have visa appeal heard in court on Monday; has asked to be moved from Australian detention hotel to facility where he can train

Nine-time Australian Open winner had been granted a medical exemption from organizers, but border officials said he failed to provide appropriate evidence; tennis star to appeal

Karatsev and partner defeat world no. 1 Djokovic at semifinal, will face another Russian duo in battle for gold

Canadian player given standing ovation as he leaves Centre Court, says he outplayed Serb in parts of the match but praises rival as an 'incredible guy'

Serb to meet Matteo Berrettini in final as he chases record-equalling 20th major championship; praises young opponent: 'We're going to see a lot of him in the future

'Obviously he's the best player in the world but I think anything is possible,' Canadian tennis player says ahead of match against defending champ

Succeeding in first ever doubles tournament, rising star and Russian partner Elena Vesnina now have sights set on playing together at Tokyo Olympics starting next month

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Karatsev, who plays for Russia but grew up in Israel, knocks the world's no. 1 player out of the semifinals of the Serbia Open tournament

Former 'journeyman' who captivated world tennis, Aslan Karatsev rises to 42 in world rankings, banks $850,000, as 1st debutant ever to reach Australian Open semifinals