Jang Su-jeong

Where the 1447.1 rating comes from

From 54 matches played between 17 September 2012 and 15 September 2025, 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.

54 matches, from the most recent to the first

beaten by Talia Gibson 1–2
15/09/25 · WTA 500 2025 · Qualifying — First round · detail
−10.41457.5 → 1447.1
beaten by Kyoka Okamura 0–2
28/10/24 · WTA 250 2024 · Qualifying — Qualifying competition · detail
−11.21468.7 → 1457.5
beat Che Sin-yu 2–0
28/10/24 · WTA 250 2024 · Qualifying — First round · detail
+12.61456.1 → 1468.7
beaten by Anastasia Zakharova 0–2
28/10/24 · WTA 250 2024 · First round · detail
−10.21466.3 → 1456.1
beaten by Yuliia Starodubtseva 0–2
24/09/24 · WTA 1000 2024 · Qualifying — Qualifying competition · detail
−8.91475.2 → 1466.3
beat Sachia Vickery 2–0
23/09/24 · WTA 1000 2024 · Qualifying — First round · detail
+17.21458.1 → 1475.2
beaten by Ajla Tomljanović 1–2
16/09/24 · WTA 500 2024 · First round · detail
−4.11462.1 → 1458.1
beat Sofia Kenin 2–0
09/10/23 · WTA 250 2023 · First round · detail
+20.91441.2 → 1462.1
beaten by Emina Bektas 0–2
09/10/23 · WTA 250 2023 · Second round · detail
−10.01451.3 → 1441.2
beaten by Mai Hontama 1–2
11/09/23 · WTA 250 2023 · First round · detail
−10.91462.1 → 1451.3
beaten by Viktoriya Tomova 0–2
20/02/23 · WTA 1000 2023 · Qualifying — Qualifying competition · detail
−8.51470.6 → 1462.1
beat Anna Kalinskaya 2–1
20/02/23 · WTA 1000 2023 · Qualifying — First round · detail
+20.71449.9 → 1470.6
beaten by Magdalena Fręch 1–2
06/02/23 · WTA 500 2023 · Qualifying — First round · detail
−7.11456.9 → 1449.9
beaten by Zhu Lin 0–2
30/01/23 · WTA 250 2023 · Second round · detail
−7.51464.5 → 1456.9
beat Katie Boulter 2–1
30/01/23 · WTA 250 2023 · First round · detail
+19.71444.8 → 1464.5
beaten by Zhu Lin 0–2
19/09/22 · WTA 250 2022 · First round · detail
−9.51454.3 → 1444.8
beaten by Danka Kovinić 1–2
17/01/22 · WTA Grand Slam 2022 · First round · detail
−8.51462.9 → 1454.3
beaten by Ulrikke Eikeri 0–2
16/09/19 · WTA 250 2019 · Qualifying — First round · detail
−14.11477.0 → 1462.9
beaten by Valeria Savinykh 0–2
09/09/19 · WTA 250 2019 · Qualifying — Qualifying competition · detail
−14.61491.6 → 1477.0
beat Susanne Celik 2–0
09/09/19 · WTA 250 2019 · Qualifying — First round · detail
+9.51482.1 → 1491.6
beaten by Priscilla Hon 1–2
17/09/18 · WTA 250 2018 · First round · detail
−10.11492.2 → 1482.1
beaten by Zhang Yuxuan 1–2
10/09/18 · WTA 250 2018 · Qualifying — Qualifying competition · detail
−14.41506.7 → 1492.2
beat Ellen Perez 2–1
10/09/18 · WTA 250 2018 · Qualifying — First round · detail
+12.41494.3 → 1506.7
beat Danielle Lao 2–0
10/09/18 · WTA 250 2018 · Qualifying — Second round · detail
+13.11481.1 → 1494.3
beaten by Magda Linette 0–2
23/07/18 · WTA 250 2018 · First round · detail
−8.51489.6 → 1481.1
beaten by Wang Xinyu 1–2
01/01/18 · WTA 250 2018 · Qualifying — First round · detail
−12.91502.6 → 1489.6
beaten by Shelby Rogers 0–2
09/10/17 · WTA 250 2017 · First round · detail
−6.71509.2 → 1502.6
beaten by Nicole Gibbs 0–2
18/09/17 · WTA 250 2017 · First round · detail
−9.41518.7 → 1509.2
beaten by Luksika Kumkhum 0–2
11/09/17 · WTA 250 2017 · Qualifying — Second round · detail
−11.11529.7 → 1518.7
beat Himari Sato 2–0
11/09/17 · WTA 250 2017 · Qualifying — First round · detail
+10.51519.3 → 1529.7
beaten by Kristýna Plíšková 0–2
24/07/17 · WTA 250 2017 · First round · detail
−6.91526.2 → 1519.3
27/02/17 · WTA 250 2017 · Qualifying — Qualifying competition · detail
+14.51511.7 → 1526.2
beat Ling Zhang 2–0
27/02/17 · WTA 250 2017 · Qualifying — First round · detail
+9.31502.4 → 1511.7
beaten by Elina Svitolina 0–2
27/02/17 · WTA 250 2017 · First round · detail
−2.01504.4 → 1502.4
beaten by Ashleigh Barty 1–2
09/01/17 · WTA 250 2017 · Qualifying — First round · detail
−8.31512.6 → 1504.4
beaten by Bethanie Mattek-Sands 0–2
02/01/17 · WTA 500 2017 · Qualifying — First round · detail
−8.41521.0 → 1512.6
beaten by Irina-Camelia Begu 0–2
19/09/16 · WTA 250 2016 · First round · detail
−5.41526.4 → 1521.0
beat Shuko Aoyama 2–1
12/09/16 · WTA 250 2016 · Qualifying — Second round · detail
+11.11515.3 → 1526.4
beat Sabina Sharipova 2–0
12/09/16 · WTA 250 2016 · Qualifying — Qualifying competition · detail
+8.51506.9 → 1515.3
beat Ons Jabeur 2–0
12/09/16 · WTA 250 2016 · Qualifying — First round · detail
+13.81493.0 → 1506.9
beat Saisai Zheng 2–1
12/09/16 · WTA 250 2016 · First round · detail
+15.51477.5 → 1493.0
beaten by Jana Čepelová 0–2
12/09/16 · WTA 250 2016 · Second round · detail
−6.01483.5 → 1477.5
beat Zheng Wushuang 2–0
01/08/16 · WTA 250 2016 · First round · detail
+13.01470.5 → 1483.5
beaten by Liu Fangzhou 0–2
01/08/16 · WTA 250 2016 · Second round · detail
−12.51483.0 → 1470.5
beat Silvia Njirić 2–1
12/10/15 · WTA 250 2015 · Qualifying — First round · detail
+26.21456.8 → 1483.0
12/10/15 · WTA 250 2015 · Qualifying — Qualifying competition · detail
+23.01433.7 → 1456.8
beaten by Lee Ya-hsuan 0–2
12/10/15 · WTA 250 2015 · First round · detail
−23.01456.8 → 1433.7
beaten by Mona Barthel 0–2
21/09/15 · WTA 250 2015 · First round · detail
−12.21469.0 → 1456.8
beaten by Makoto Ninomiya 0–2
14/09/15 · WTA 250 2015 · Qualifying — First round · detail
−28.71497.6 → 1469.0
beaten by Han Na-lae 1–2
15/09/14 · WTA 250 2014 · First round · detail
−27.51525.1 → 1497.6

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.