Tennis news 2023: Holger Rune booed during loss to Jannik Sinner; Chair umpire issues ultimatum to rowdy Italian crowd in ATP Finals
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VAR' in tennis? US Open to use video technology to assist umpires and monitor player behaviour during tournament | Tennis News | Sky Sports
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Novak Djokovic says he did not overstep mark when touching umpire's shoe | Australian Open 2020 | The Guardian
Tennis umpire, 46, suspended while ATP investigates 'very sexy' remarks to 16-year-old ball girl - Yahoo Sports
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