Marta Kostyuk

Where the 1940.9 rating comes from

From 325 matches played between 19 June 2017 and 16 November 2026, 313 of them rated, and from them alone. Every line below was written at computation time: nothing is recomputed to show this page.

How to read this

On the right: the change this match produced, then the value before → after. A line's arrival value is the next line's starting value, down to the starting rating given to every newcomer. A ±0.0 is a counted match that did not move the rating, a walkover for instance.

325 matches, from the most recent to the first

beaten by Ekaterina Alexandrova 0–1
16/11/26 · WTA 500 2026 · Second round · retirement · detail
±0.01940.9 → 1940.9
beaten by Maria Sakkari 1–2
16/11/26 · WTA 1000 2026 · Second round · detail
−18.81959.7 → 1940.9
14/09/26 · WTA 500 2026 · Second round · walkover · detail
±0.01959.7 → 1959.7
beaten by Liudmila Samsonova 1–2
14/09/26 · WTA 500 2026 · Quarterfinals · detail
−18.91978.5 → 1959.7
beaten by Linda Nosková 1–2
06/09/26 · WTA Grand Slam 2026 · Fourth round · detail
−14.11992.7 → 1978.5
04/09/26 · WTA Grand Slam 2026 · Third round · detail
+5.11987.5 → 1992.7
beat Sloane Stephens 2–0
02/09/26 · WTA Grand Slam 2026 · Second round · detail
+3.01984.5 → 1987.5
beat Storm Hunter 2–0
31/08/26 · WTA Grand Slam 2026 · First round · detail
+2.41982.2 → 1984.5
beaten by Coco Gauff 0–2
15/08/26 · WTA 1000 2026 · Quarterfinals · detail
−10.91993.1 → 1982.2
beat Sloane Stephens 2–0
14/08/26 · WTA 1000 2026 · Third round · detail
+2.71990.4 → 1993.1
beat Mirra Andreeva 2–1
14/08/26 · WTA 1000 2026 · Fourth round · detail
+11.41979.0 → 1990.4
beat Sofia Kenin 2–1
13/08/26 · WTA 1000 2026 · Second round · detail
+2.71976.3 → 1979.0
beaten by Iga Świątek 1–2
09/08/26 · WTA 1000 2026 · Fourth round · detail
−10.81987.2 → 1976.3
beat Madison Keys 2–0
07/08/26 · WTA 1000 2026 · Third round · detail
+10.01977.2 → 1987.2
beat Katherine Sebov 2–0
06/08/26 · WTA 1000 2026 · Second round · detail
+1.61975.6 → 1977.2
beaten by Linda Nosková 0–2
09/07/26 · WTA Grand Slam 2026 · Semifinals · detail
−14.91990.6 → 1975.6
beat Jasmine Paolini 2–0
07/07/26 · WTA Grand Slam 2026 · Quarterfinals · detail
+7.41983.1 → 1990.6
beat Ashlyn Krueger 2–0
05/07/26 · WTA Grand Slam 2026 · Fourth round · detail
+3.61979.5 → 1983.1
beat Emma Navarro 2–1
03/07/26 · WTA Grand Slam 2026 · Third round · detail
+6.41973.1 → 1979.5
beat Anna Blinkova 2–1
01/07/26 · WTA Grand Slam 2026 · Second round · detail
+2.71970.4 → 1973.1
beat Nadia Podoroska 2–0
29/06/26 · WTA Grand Slam 2026 · First round · detail
+2.01968.4 → 1970.4
beaten by Mirra Andreeva 0–2
04/06/26 · WTA Grand Slam 2026 · Semifinals · detail
−11.91980.3 → 1968.4
beat Elina Svitolina 2–1
02/06/26 · WTA Grand Slam 2026 · Quarterfinals · detail
+14.11966.2 → 1980.3
beat Iga Świątek 2–0
31/05/26 · WTA Grand Slam 2026 · Fourth round · detail
+15.71950.5 → 1966.2
29/05/26 · WTA Grand Slam 2026 · Third round · detail
+3.91946.6 → 1950.5
beat Katie Volynets 2–1
27/05/26 · WTA Grand Slam 2026 · Second round · detail
+4.01942.6 → 1946.6
25/05/26 · WTA Grand Slam 2026 · First round · detail
+2.81939.8 → 1942.6
beat Mirra Andreeva 2–0
02/05/26 · WTA 1000 2026 · Final · detail
+13.51926.3 → 1939.8
30/04/26 · WTA 1000 2026 · Semifinals · detail
+8.01918.3 → 1926.3
beat Linda Nosková 2–0
29/04/26 · WTA 1000 2026 · Quarterfinals · detail
+10.01908.3 → 1918.3
beat Caty McNally 2–0
28/04/26 · WTA 1000 2026 · Fourth round · detail
+5.71902.5 → 1908.3
beat Jessica Pegula 2–0
26/04/26 · WTA 1000 2026 · Third round · detail
+17.31885.2 → 1902.5
beat Yulia Putintseva 2–0
24/04/26 · WTA 1000 2026 · Second round · detail
+7.41877.8 → 1885.2
beat Veronika Podrez 2–0
13/04/26 · WTA 250 2026 · Final · detail
+3.61874.1 → 1877.8
beat Tatjana Maria 2–0
13/04/26 · WTA 250 2026 · Semifinals · detail
+2.81871.3 → 1874.1
beat Diane Parry 2–0
13/04/26 · WTA 250 2026 · First round · detail
+5.21866.1 → 1871.3
beat Caty McNally 2–1
13/04/26 · WTA 250 2026 · Second round · detail
+5.71860.4 → 1866.1
beat Ann Li 2–1
13/04/26 · WTA 250 2026 · Quarterfinals · detail
+6.81853.6 → 1860.4
beaten by Elena Rybakina 0–2
20/03/26 · WTA 1000 2026 · Third round · detail
−5.21858.8 → 1853.6
19/03/26 · WTA 1000 2026 · Second round · detail
+5.21853.6 → 1858.8
beaten by Elena Rybakina 0–2
06/03/26 · WTA 1000 2026 · Third round · detail
−5.71859.4 → 1853.6
beat Taylor Townsend 2–0
05/03/26 · WTA 1000 2026 · Second round · detail
+9.41850.0 → 1859.4
beaten by Elsa Jacquemot 1–2
19/01/26 · WTA Grand Slam 2026 · First round · detail
−20.51870.5 → 1850.0
beaten by Aryna Sabalenka 0–2
05/01/26 · WTA 500 2026 · Final · detail
−4.11874.5 → 1870.5
beat Jessica Pegula 2–0
04/01/26 · WTA 500 2026 · Semifinals · detail
+16.31858.2 → 1874.5
beat Mirra Andreeva 2–0
03/01/26 · WTA 500 2026 · Quarterfinals · detail
+13.71844.5 → 1858.2
beat Amanda Anisimova 2–0
02/01/26 · WTA 500 2026 · Third round · detail
+17.21827.3 → 1844.5
beat Yulia Putintseva 2–1
01/01/26 · WTA 500 2026 · Second round · detail
+7.71819.6 → 1827.3
beaten by Yuan Yue 0–2
30/12/25 · WTA 500 2025 · Second round · detail
−18.81838.4 → 1819.6
beaten by Karolína Muchová 1–2
06/10/25 · WTA 1000 2025 · First round · detail
−10.41848.8 → 1838.4

Only the matches the source publishes appear; what is missing is listed. The source gives the day, not the hour: two matches on the same day are ordered by a reproducible rule, which is not necessarily the real order.