Sophie Chang

Where the 1420.7 rating comes from

From 27 matches played between 31 July 2017 and 31 March 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.

27 matches, from the most recent to the first

beaten by Bethanie Mattek-Sands 0–2
31/03/25 · WTA 500 2025 · Qualifying — First round · detail
−8.31429.0 → 1420.7
beaten by Cristina Bucșa 0–2
24/02/25 · WTA 250 2025 · Qualifying — First round · detail
−5.71434.7 → 1429.0
beaten by Maja Chwalińska 0–2
28/10/24 · WTA 250 2024 · Qualifying — Qualifying competition · detail
−8.91443.7 → 1434.7
beat Anna Frey 2–0
28/10/24 · WTA 250 2024 · Qualifying — First round · detail
+14.61429.0 → 1443.7
09/09/24 · WTA 250 2024 · Qualifying — First round · detail
+16.41412.6 → 1429.0
beaten by Elsa Jacquemot 0–2
09/09/24 · WTA 250 2024 · Qualifying — Qualifying competition · detail
−11.61424.2 → 1412.6
beaten by Claire Liu 1–2
01/04/24 · WTA 500 2024 · Qualifying — First round · detail
−5.01429.2 → 1424.2
beaten by Heather Watson 0–2
12/06/23 · WTA 250 2023 · Qualifying — First round · detail
−5.81435.1 → 1429.2
22/05/23 · WTA 250 2023 · Qualifying — First round · detail
+11.71423.3 → 1435.1
beaten by Hsieh Su-wei 0–2
22/05/23 · WTA 250 2023 · Qualifying — Qualifying competition · detail
−4.71428.0 → 1423.3
beaten by Bernarda Pera 1–2
22/05/23 · WTA 250 2023 · First round · detail
−4.61432.6 → 1428.0
beaten by Louisa Chirico 0–2
03/04/23 · WTA 500 2023 · Qualifying — First round · detail
−6.71439.3 → 1432.6
beaten by Rina Saigo 0–2
19/09/22 · WTA 500 2022 · Qualifying — First round · detail
−9.81449.0 → 1439.3
beaten by Sachia Vickery 0–2
01/08/22 · WTA 250 2022 · Qualifying — First round · detail
−8.71457.8 → 1449.0
beaten by María Lourdes Carlé 0–2
18/07/22 · WTA 250 2022 · Qualifying — First round · detail
−10.71468.4 → 1457.8
beat Whitney Osuigwe 2–0
04/04/22 · WTA 500 2022 · Qualifying — First round · detail
+10.11458.3 → 1468.4
beat Louisa Chirico 2–0
04/04/22 · WTA 500 2022 · Qualifying — Qualifying competition · detail
+15.81442.6 → 1458.3
beaten by Ajla Tomljanović 0–2
04/04/22 · WTA 500 2022 · First round · detail
−9.11451.7 → 1442.6
beaten by Ena Shibahara 1–2
23/08/21 · WTA 250 2021 · Qualifying — First round · detail
−26.51478.2 → 1451.7
beaten by Magda Linette 0–2
19/08/19 · WTA 250 2019 · Qualifying — Second round · detail
−11.31489.5 → 1478.2
19/08/19 · WTA 250 2019 · Qualifying — First round · detail
+28.51461.0 → 1489.5
beaten by Dalila Jakupović 0–2
10/09/18 · WTA 250 2018 · Qualifying — First round · detail
−14.71475.7 → 1461.0
beaten by Ysaline Bonaventure 0–2
30/07/18 · WTA 250 2018 · Qualifying — First round · detail
−21.41497.0 → 1475.7
beaten by Silvia Soler Espinosa 1–2
02/04/18 · WTA 500 2018 · Qualifying — Qualifying competition · detail
−23.91520.9 → 1497.0
beat Arina Rodionova 2–1
02/04/18 · WTA 500 2018 · Qualifying — First round · detail
+23.51497.5 → 1520.9
beaten by Jamie Loeb 0–2
31/07/17 · WTA 250 2017 · Qualifying — Qualifying competition · detail
−20.31517.8 → 1497.5
beat Deniz Khazaniuk 2–1
31/07/17 · WTA 250 2017 · Qualifying — First round · detail
+17.81500.0 → 1517.8

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.