Alex de Minaur got 28-time champions Australia off to a blistering start, but Thanasi Kokkinakis couldn't maintain the momentum Friday as they split their opening Davis Cup singles rubbers with Hungary. Twelve Davis Cup ties are being contested on Friday and Saturday, with the winners progressing to the finals, the first stage of which will be played in September with 16 teams. Croatia, Great Britain and Serbia are already through, with Davis Cup chiefs to decide next week who will replace defending champions Russia after they were axed over the invasion of Ukraine.