Katarzyna Piter

Where the 1393.4 rating comes from

From 120 matches played between 30 April 2007 and 23 February 2026, 119 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.

120 matches, from the most recent to the first

beaten by Shuai Zhang 0–2
23/02/26 · WTA 500 2026 · Qualifying — First round · detail
−4.61398.1 → 1393.4
beaten by Simona Waltert 0–2
02/02/26 · WTA 500 2026 · Qualifying — Qualifying competition · detail
−6.01404.1 → 1398.1
02/02/26 · WTA 500 2026 · Qualifying — First round · detail
+9.41394.7 → 1404.1
beaten by Kirsten Flipkens 0–2
10/01/22 · WTA 250 2022 · Qualifying — First round · detail
−4.91399.6 → 1394.7
beaten by Bernarda Pera 0–2
20/09/21 · WTA 500 2021 · Qualifying — First round · detail
−5.91405.4 → 1399.6
beaten by Katharina Gerlach 0–2
05/07/21 · WTA 250 2021 · Qualifying — First round · detail
−12.51417.9 → 1405.4
beat Nastasja Schunk 2–1
21/06/21 · WTA 250 2021 · Qualifying — Qualifying competition · detail
+16.61401.3 → 1417.9
beaten by Petra Kvitová 1–2
21/06/21 · WTA 250 2021 · First round · detail
−1.11402.4 → 1401.3
beaten by Marina Melnikova 0–2
05/04/21 · WTA 250 2021 · Qualifying — First round · detail
−12.01414.4 → 1402.4
beaten by Olga Govortsova 0–2
08/03/21 · WTA 250 2021 · Qualifying — First round · detail
−5.91420.3 → 1414.4
beaten by Jessica Pieri 0–2
04/01/21 · WTA 500 2021 · Qualifying — First round · detail
−10.01430.3 → 1420.3
beat Laura Ioana Paar 2–0
14/10/19 · WTA 250 2019 · Qualifying — First round · detail
+15.61414.6 → 1430.3
beaten by Chloe Paquet 1–2
14/10/19 · WTA 250 2019 · Qualifying — Second round · detail
−8.11422.7 → 1414.6
beaten by Renata Zarazua 0–2
20/05/19 · WTA 250 2019 · Qualifying — First round · detail
−9.81432.5 → 1422.7
beaten by Arantxa Rus 0–2
15/10/18 · WTA 250 2018 · Qualifying — First round · detail
−7.21439.7 → 1432.5
beaten by Martina Trevisan 1–2
16/07/18 · WTA 250 2018 · Qualifying — First round · detail
−9.31449.0 → 1439.7
11/06/18 · WTA 250 2018 · Qualifying — Qualifying competition · detail
−9.51458.4 → 1449.0
beat Barbara Haas 2–0
11/06/18 · WTA 250 2018 · Qualifying — First round · detail
+12.41446.0 → 1458.4
beat Myrtille Georges 2–1
21/05/18 · WTA 250 2018 · Qualifying — First round · detail
+11.81434.2 → 1446.0
21/05/18 · WTA 250 2018 · Qualifying — Qualifying competition · detail
+14.11420.2 → 1434.2
beaten by Zarina Diyas 0–2
21/05/18 · WTA 250 2018 · First round · detail
−4.51424.7 → 1420.2
beaten by Varatchaya Wongteanchai 1–2
17/07/17 · WTA 250 2017 · Qualifying — First round · detail
−10.31435.0 → 1424.7
beat Shuko Aoyama 2–1
22/05/17 · WTA 250 2017 · Qualifying — First round · detail
+12.81422.2 → 1435.0
beaten by Julia Boserup 0–2
22/05/17 · WTA 250 2017 · Qualifying — Qualifying competition · detail
−9.01431.2 → 1422.2
beaten by Natalia Vikhlyantseva 0–2
01/05/17 · WTA 250 2017 · Qualifying — First round · detail
−7.91439.0 → 1431.2
beaten by Océane Dodin 0–2
24/04/17 · WTA 500 2017 · Qualifying — First round · detail
−7.71446.8 → 1439.0
beaten by Danielle Lao 0–2
10/10/16 · WTA 250 2016 · Qualifying — First round · detail
−10.61457.3 → 1446.8
26/09/16 · WTA 250 2016 · Qualifying — First round · detail
+14.01443.4 → 1457.3
beaten by Hiroko Kuwata 0–2
26/09/16 · WTA 250 2016 · Qualifying — Qualifying competition · detail
−11.81455.2 → 1443.4
beat Riko Sawayanagi 2–1
19/09/16 · WTA 250 2016 · Qualifying — Second round · detail
+12.81442.4 → 1455.2
beat Park So-yeon 2–0
19/09/16 · WTA 250 2016 · Qualifying — First round · detail
+14.51427.9 → 1442.4
19/09/16 · WTA 250 2016 · Qualifying — Qualifying competition · detail
+14.61413.3 → 1427.9
19/09/16 · WTA 250 2016 · First round · detail
−7.51420.8 → 1413.3
beat Susanne Celik 2–1
11/07/16 · WTA 250 2016 · Qualifying — Second round · detail
+13.81407.1 → 1420.8
beat Miriam Bulgaru 2–0
11/07/16 · WTA 250 2016 · Qualifying — First round · detail
+15.61391.4 → 1407.1
beaten by Elitsa Kostova 0–2
11/07/16 · WTA 250 2016 · Qualifying — Qualifying competition · detail
−9.61401.1 → 1391.4
beaten by Cristina Dinu 1–2
16/05/16 · WTA 250 2016 · Qualifying — First round · detail
−8.21409.3 → 1401.1
beaten by Marina Erakovic 0–2
25/04/16 · WTA 250 2016 · Qualifying — Second round · detail
−4.61413.9 → 1409.3
25/04/16 · WTA 250 2016 · Qualifying — First round · detail
+15.71398.2 → 1413.9
beaten by Maryna Zanevska 0–2
18/04/16 · WTA 250 2016 · Qualifying — First round · detail
−9.01407.2 → 1398.2
beaten by Amandine Hesse 0–2
04/04/16 · WTA 250 2016 · Qualifying — First round · detail
−9.71416.8 → 1407.2
beat Zhang Yuxuan 2–1
29/02/16 · WTA 250 2016 · Qualifying — First round · detail
+13.71403.1 → 1416.8
beaten by Risa Ozaki 0–2
29/02/16 · WTA 250 2016 · Qualifying — Qualifying competition · detail
−7.71410.9 → 1403.1
beaten by Laura Pous Tió 0–2
11/01/16 · WTA 250 2016 · Qualifying — First round · detail
−10.51421.4 → 1410.9
beaten by Laura Pous Tió 0–2
04/01/16 · WTA 500 2016 · Qualifying — First round · detail
−10.41431.8 → 1421.4
beaten by Anett Kontaveit 1–2
28/09/15 · WTA 250 2015 · Qualifying — Qualifying competition · detail
−7.61439.4 → 1431.8
28/09/15 · WTA 250 2015 · Qualifying — First round · detail
+15.81423.6 → 1439.4
beaten by Liang Chen 1–2
21/09/15 · WTA 250 2015 · Qualifying — First round · detail
−11.61435.1 → 1423.6
beaten by Alexandra Panova 0–2
14/09/15 · WTA 250 2015 · Qualifying — First round · detail
−8.81443.9 → 1435.1
beaten by Maryna Zanevska 0–2
20/07/15 · WTA 250 2015 · Qualifying — Qualifying competition · detail
−9.71453.7 → 1443.9

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.