Ukrainian 18-year-old Marta Kostyuk seriously endangered Naomi Osaka in the third round of the US Open, but experience prevailed on Arthur Ashe Stadium and the Japanese dominated the final stage of the match to win 6-3 6-7(4) 6-2.
Kostyuk’s strong and aggressive game convinced the world that she’s a Grand Slam champion material, as the 137th ranked player fought off six break points at 1-2 in the second set, pressured Osaka to win the tiebreak, and then had a big chance to go up a break in the third set.