World number one Aryna Sabalenka has overcome Mirra Andreeva's stern challenge to book a Brisbane International final berth against qualifier Polina Kudermetova. US makes United Cup final Photo shows Tomáš Macháč and Taylor Fritz shake hands after their singles match at the United Cup. The US is through to the United Cup final after Czechia's Tomáš Macháč abruptly withdraws from …