Australian Open 2024 tennis: Coco Gauff edges Marta Kostyuk in surival of the fittest to reach first semi-final

The 19-year-old US Open winner comes out ahead of her Ukrainian opponent in a 3-hour, 8-minute quarter-final to stay unbeaten this seasonCoco Gauff outlasted Marta Kostyuk in a 3-hour, 8-minute marathon to reach the Australian Open semi-finals on Tuesday (23 January). Gauff progressed 7-6 (6), 6-7 (3), 6-2 against the world No. 37 in a…