Gauff tops Kostiuk in Australian Open semis
MELBOURNE: US Open champion Coco Gauff overcame huge opposition from unseeded Marta Kostyuk on Tuesday to reach her first Australian Open semi-final. The American fourth seed wore down the Ukrainian in sweltering conditions at Rod Laver Arena to take an unassailable 7-6 (8/6), 6-7 (3/7), 6-2 encounter in three hours and eight minutes. She will face either defending champion and runner-up Aryna Sabalenka or ninth-seeded Barbora Krejcikova on Thursday for a place in the final. After showing ominous form to compete in the last eight, she was far from convincing by the performance of the 19-year-old, who struggled on serve
