Lois Boisson

Where the 1633.8 rating comes from

From 37 matches played between 1 March 2021 and 16 November 2026, 34 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.

37 matches, from the most recent to the first

beaten by Anna Bondár 1–1
16/11/26 · WTA 1000 2026 · Qualifying — First round · retirement · detail
±0.01633.8 → 1633.8
beaten by Panna Udvardy 1–2
14/09/26 · WTA 500 2026 · First round · detail
−15.71649.6 → 1633.8
beaten by Emma Navarro 1–2
31/08/26 · WTA Grand Slam 2026 · First round · detail
−8.21657.8 → 1649.6
beaten by Diane Parry 1–2
14/08/26 · WTA 1000 2026 · Third round · detail
−11.91669.6 → 1657.8
beat Belinda Bencic 1–0
13/08/26 · WTA 1000 2026 · Second round · retirement · detail
±0.01669.6 → 1669.6
beat Ashlyn Krueger 2–0
12/08/26 · WTA 1000 2026 · First round · detail
+13.21656.5 → 1669.6
beaten by Antonia Ružić 1–2
04/08/26 · WTA 1000 2026 · First round · detail
−12.31668.8 → 1656.5
beat Emiliana Arango 2–0
03/08/26 · WTA 1000 2026 · Qualifying — Qualifying competition · detail
+8.01660.8 → 1668.8
beaten by Elena Rybakina 1–2
29/06/26 · WTA Grand Slam 2026 · First round · detail
−2.61663.4 → 1660.8
beaten by Solana Sierra 1–2
08/06/26 · WTA 250 2026 · First round · detail
−13.51677.0 → 1663.4
beaten by Anna Kalinskaya 0–2
25/05/26 · WTA Grand Slam 2026 · First round · detail
−7.31684.3 → 1677.0
beat Wang Xinyu 2–0
18/05/26 · WTA 500 2026 · First round · detail
+12.31672.0 → 1684.3
beaten by Victoria Mboko 0–2
18/05/26 · WTA 500 2026 · Second round · detail
−5.21677.2 → 1672.0
beaten by Kateřina Siniaková 0–2
06/05/26 · WTA 1000 2026 · First round · detail
−8.71685.9 → 1677.2
beaten by Peyton Stearns 0–2
23/04/26 · WTA 1000 2026 · First round · detail
−11.11697.0 → 1685.9
beaten by Emma Navarro 0–2
26/09/25 · WTA 1000 2025 · Third round · retirement · detail
±0.01697.0 → 1697.0
25/09/25 · WTA 1000 2025 · Second round · detail
+16.71680.3 → 1697.0
beat Dalma Gálfi 2–1
24/09/25 · WTA 1000 2025 · First round · detail
+10.51669.9 → 1680.3
beat Ku Yeon-woo 2–0
15/09/25 · WTA 500 2025 · First round · detail
+6.91663.0 → 1669.9
beaten by Ekaterina Alexandrova 1–2
15/09/25 · WTA 500 2025 · Second round · detail
−5.51668.5 → 1663.0
beaten by Viktorija Golubic 1–2
25/08/25 · WTA Grand Slam 2025 · First round · detail
−13.21681.7 → 1668.5
beaten by Jil Belen Teichmann 1–2
18/08/25 · WTA 250 2025 · First round · detail
−14.11695.8 → 1681.7
beat Viktoriya Tomova 2–0
14/07/25 · WTA 250 2025 · Quarterfinals · detail
+9.11686.7 → 1695.8
beat Tamara Korpatsch 2–1
14/07/25 · WTA 250 2025 · Second round · detail
+5.01681.7 → 1686.7
beat Julia Grabher 2–0
14/07/25 · WTA 250 2025 · First round · detail
+6.31675.4 → 1681.7
14/07/25 · WTA 250 2025 · Semifinals · detail
+16.41658.9 → 1675.4
beat Anna Bondár 2–0
14/07/25 · WTA 250 2025 · Final · detail
+9.91649.0 → 1658.9
beaten by Coco Gauff 0–2
06/06/25 · WTA Grand Slam 2025 · Semifinals · detail
−5.11654.1 → 1649.0
beat Mirra Andreeva 2–0
04/06/25 · WTA Grand Slam 2025 · Quarterfinals · detail
+42.71611.5 → 1654.1
beat Jessica Pegula 2–1
01/06/25 · WTA Grand Slam 2025 · Fourth round · detail
+43.61567.9 → 1611.5
beat Elsa Jacquemot 2–1
30/05/25 · WTA Grand Slam 2025 · Third round · detail
+19.81548.1 → 1567.9
28/05/25 · WTA Grand Slam 2025 · Second round · detail
+32.21515.9 → 1548.1
beat Elise Mertens 2–1
26/05/25 · WTA Grand Slam 2025 · First round · detail
+43.11472.8 → 1515.9
beaten by Moyuka Uchijima 1–2
14/04/25 · WTA 250 2025 · Second round · detail
−16.71489.5 → 1472.8
beat Harriet Dart 2–0
14/04/25 · WTA 250 2025 · First round · detail
+35.61453.9 → 1489.5
beaten by Kamilla Rakhimova 0–2
18/04/22 · WTA 250 2022 · Qualifying — First round · detail
−19.61473.5 → 1453.9
beaten by Barbara Haas 1–2
01/03/21 · WTA 250 2021 · Qualifying — First round · detail
−26.51500.0 → 1473.5

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.