MELBOURNE, Jan 23, 2024 (BSS/AFP) - US Open champion Coco Gauff overcame huge resistance from the unseeded Marta Kostyuk Tuesday to move into her first Australian Open semi-final.

The American fourth seed wore down the Ukrainian in hot conditions on Rod Laver Arena to clinch a scrappy encounter 7-6 (8/6), 6-7 (3/7), 6-2 in three hours and eight minutes.