Kasumi Ishikawa

Where the 1709.6 rating comes from

From 210 matches played between 1 January 2009 and 19 April 2023, 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.

210 matches, from the most recent to the first

beaten by Chen Meng 1–3
19/04/23 · WTT Champions Macao 2023 · Round of 16 · detail
−2.91712.5 → 1709.6
beat Nina Mittelham 3–2
17/04/23 · WTT Champions Macao 2023 · Round of 32 · detail
+5.51707.0 → 1712.5
beaten by Chen Meng 0–3
11/04/23 · WTT Champions Xinxiang 2023 · Round of 16 · detail
−2.81709.8 → 1707.0
beat Adriana Diaz 3–0
09/04/23 · WTT Champions Xinxiang 2023 · Round of 32 · detail
+7.31702.5 → 1709.8
beaten by Joo Cheonhui 1–3
12/03/23 · Singapore Smash 2023 · Round of 16 · detail
−17.41719.9 → 1702.5
beat Shan Xiaona 3–0
09/03/23 · Singapore Smash 2023 · Round of 32 · detail
+8.61711.3 → 1719.9
beat Bruna Takahashi 3–0
07/03/23 · Singapore Smash 2023 · Round of 64 · detail
+4.81706.5 → 1711.3
beaten by Sun Yingsha 0–3
30/10/22 · WTT Cup Finals 2022 · Quarterfinals · detail
−4.21710.7 → 1706.5
beat Miyuu Kihara 3–1
30/10/22 · WTT Cup Finals 2022 · Round of 16 · detail
+5.11705.6 → 1710.7
beaten by Jia Nan Yuan 1–3
21/10/22 · WTT Champions Macao 2022 · Quarterfinals · detail
−15.31721.0 → 1705.6
beat Dina Meshref 3–0
20/10/22 · WTT Champions Macao 2022 · Round of 16 · detail
+4.21716.8 → 1721.0
beat Lily Zhang 3–0
19/10/22 · WTT Champions Macao 2022 · Round of 32 · detail
+6.41710.4 → 1716.8
beaten by Hina Hayata 1–3
19/07/22 · WTT Champions Budapest 2022 · Round of 16 · detail
−15.11725.5 → 1710.4
18/07/22 · WTT Champions Budapest 2022 · Round of 32 · detail
+6.71718.8 → 1725.5
beaten by Chen Meng 1–3
15/03/22 · Singapore Smash 2022 · Quarterfinals · detail
−2.31721.1 → 1718.8
beat Cheng I-Ching 3–2
12/03/22 · Singapore Smash 2022 · Round of 16 · detail
+10.41710.8 → 1721.1
beat Hana Matelova 3–0
10/03/22 · Singapore Smash 2022 · Round of 32 · detail
+3.31707.5 → 1710.8
beat Lily Zhang 3–0
07/03/22 · Singapore Smash 2022 · Round of 64 · detail
+6.91700.7 → 1707.5
beaten by Chen Meng 1–3
07/12/21 · WTT Cup Finals 2021 · Round of 16 · detail
−2.01702.6 → 1700.7
29/11/21 · World Table Tennis Championships 2021 · Third round · detail
+6.31696.3 → 1702.6
beat Giorgia Piccolin 4–0
29/11/21 · World Table Tennis Championships 2021 · Second round · detail
+4.31692.0 → 1696.3
beaten by Chen Meng 0–4
29/11/21 · World Table Tennis Championships 2021 · Quarterfinals · detail
−1.81693.8 → 1692.0
beat Bernadette Szocs 4–0
29/11/21 · World Table Tennis Championships 2021 · Fourth round · detail
+6.61687.2 → 1693.8
beaten by Yu Mengyu 1–4
29/07/21 · Olympic Games 2020 · Quarterfinals · detail
−14.41701.5 → 1687.2
beat Sofia Polcanova 4–0
29/07/21 · Olympic Games 2020 · Fourth round · detail
+6.41695.2 → 1701.5
beat Orawan Paranang 4–2
29/07/21 · Olympic Games 2020 · Third round · detail
+5.51689.7 → 1695.2
beaten by Suh Hyo-won 1–4
22/11/20 · ITTF World Tour Grand Finals 2020 · First round · detail
−16.31706.0 → 1689.7
beaten by Sun Yingsha 0–4
10/11/20 · ITTF Women's World Cup 2020 · Quarterfinals · detail
−6.81712.8 → 1706.0
beat Suh Hyo-won 4–0
10/11/20 · ITTF Women's World Cup 2020 · First round · detail
+8.01704.8 → 1712.8
beaten by Wang Yidi 2–4
04/03/20 · ITTF World Tour, Qatar Open 2020 · Round of 16 · detail
−10.11714.9 → 1704.8
beat Miyu Kato 4–1
03/03/20 · ITTF World Tour, Qatar Open 2020 · Round of 32 · detail
+8.11706.8 → 1714.9
beaten by Cheng I-Ching 3–4
22/02/20 · ITTF World Tour, Hungarian Open 2020 · Semifinals · detail
−13.61720.5 → 1706.8
beat Nina Mittelham 4–0
20/02/20 · ITTF World Tour, Hungarian Open 2020 · Quarterfinals · detail
+4.71715.8 → 1720.5
beat Adriana Diaz 4–1
19/02/20 · ITTF World Tour, Hungarian Open 2020 · Round of 16 · detail
+5.81710.0 → 1715.8
beat Haruna Ojio 4–0
18/02/20 · ITTF World Tour, Hungarian Open 2020 · Round of 32 · detail
+4.91705.1 → 1710.0
beaten by Sun Yingsha 0–4
29/01/20 · ITTF World Tour, German Open 2020 · Round of 16 · detail
−6.21711.3 → 1705.1
beat Xiaoxin Yang 4–0
28/01/20 · ITTF World Tour, German Open 2020 · Round of 32 · detail
+8.41702.9 → 1711.3
beaten by Liu Shiwen 0–4
15/12/19 · ITTF World Tour Grand Finals 2019 · First round · detail
−4.91707.8 → 1702.9
beaten by Feng Tianwei 3–4
20/10/19 · ITTF Women's World Cup 2019 · Quarterfinals · detail
−14.31722.1 → 1707.8
beat Dina Meshref 4–0
20/10/19 · ITTF Women's World Cup 2019 · First round · detail
+3.61718.5 → 1722.1
beaten by Wang Yidi 1–4
05/06/19 · ITTF World Tour, Hong Kong Open 2019 · Round of 16 · detail
−13.91732.4 → 1718.5
beat Mo Zhang 4–0
04/06/19 · ITTF World Tour, Hong Kong Open 2019 · Round of 32 · detail
+4.91727.5 → 1732.4
beaten by Chen Xingtong 0–4
29/05/19 · ITTF World Tour, China Open 2019 · Round of 16 · detail
−10.51738.0 → 1727.5
beat Ni Xialian 4–0
28/05/19 · ITTF World Tour, China Open 2019 · Round of 32 · detail
+5.11733.0 → 1738.0
27/04/19 · World Table Tennis Championships 2019 · Third round · detail
+6.71726.2 → 1733.0
beaten by Doo Hoi Kem 3–4
27/04/19 · World Table Tennis Championships 2019 · Fourth round · detail
−19.01745.3 → 1726.2
27/04/19 · World Table Tennis Championships 2019 · First round · detail
+4.81740.4 → 1745.3
beat Amelie Solja 4–1
27/04/19 · World Table Tennis Championships 2019 · Second round · detail
+3.81736.6 → 1740.4
beaten by Sun Yingsha 0–4
26/03/19 · ITTF World Tour, Qatar Open 2019 · Round of 32 · detail
−6.81743.4 → 1736.6
beaten by Liu Fei 1–4
01/01/19 · ITTF World Tour, Swedish Open 2019 · Round of 32 · detail
−17.71761.2 → 1743.4

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.