Iva Jovic ⁠and Alexandra Eala put their friendship aside for three hours at the US Open on Saturday before the 18-year-old American prevailed to reach the fourth round. The home hope’s 7-5, 3-6, 7-5 triumph at Arthur Ashe Stadium was a rare bright spot for the New York crowd, who had earlier watched China’s Zheng Qinwen overcome Madison Keys in stunning fashion. On the brink of losing the third set 6-0, Zheng rallied to complete a remarkable 1-6, 7-6, 7-5 victory. Jovic and Eala already shared...