Marta Kostyuk

Marta Kostyuk is a 24-year-old Ukrainian professional tennis player on the WTA Tour, competing right-handed. She currently holds a ranking of 9 in WTA singles with 3910 points as of 5 October 2026. Since tracking began on 22 May 2026, she has improved from rank 15 to her best position of 9, first reached on 29 September 2026.

During the 2026 season, Kostyuk played 12 tournaments with a record of 31 wins and 10 losses across 41 matches according to Tennis Post's match data. She won the Madrid title and reached the final in Brisbane. At the Grand Slams, she reached the semi-finals of the French Open and Wimbledon, while exiting the US Open in the round of 16.