Janice Tjen

Where the 1649.8 rating comes from

From 65 matches played between 25 August 2025 and 16 November 2026, 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.

65 matches, from the most recent to the first

beaten by Ashlyn Krueger 0–2
16/11/26 · WTA 250 2026 · First round · detail
−10.71660.6 → 1649.8
16/11/26 · WTA 250 2026 · First round · detail
+12.21648.3 → 1660.6
beaten by Harriet Dart 1–2
16/11/26 · WTA 250 2026 · Second round · detail
−15.21663.5 → 1648.3
beat Daria Snigur 2–0
16/11/26 · WTA 1000 2026 · Second round · detail
+14.71648.9 → 1663.5
beat Aoi Ito 2–0
16/11/26 · WTA 1000 2026 · First round · detail
+8.91639.9 → 1648.9
beaten by Ann Li 0–2
16/11/26 · WTA 1000 2026 · Third round · detail
−8.81648.7 → 1639.9
beat Robin Montgomery 2–0
02/11/26 · WTA 250 2026 · Semifinals · detail
+12.31636.4 → 1648.7
02/11/26 · WTA 250 2026 · Quarterfinals · detail
+13.41623.0 → 1636.4
beaten by Magda Linette 1–2
02/11/26 · WTA 250 2026 · Final · detail
−10.41633.4 → 1623.0
beat Katherine Hui 2–0
02/11/26 · WTA 250 2026 · First round · detail
+7.61625.8 → 1633.4
beat Joanna Garland 2–0
02/11/26 · WTA 250 2026 · Second round · detail
+10.81615.0 → 1625.8
beaten by Diana Shnaider 0–2
25/10/26 · WTA 1000 2026 · Second round · detail
−5.11620.1 → 1615.0
20/10/26 · WTA 1000 2026 · First round · detail
+13.21606.9 → 1620.1
beaten by Sloane Stephens 0–2
14/09/26 · WTA 500 2026 · Second round · detail
−10.91617.9 → 1606.9
beat Darja Vidmanova 2–0
14/09/26 · WTA 500 2026 · First round · detail
+10.71607.1 → 1617.9
beaten by Mirra Andreeva 0–2
31/08/26 · WTA Grand Slam 2026 · First round · detail
−3.01610.1 → 1607.1
beaten by Yuliia Starodubtseva 0–2
24/08/26 · WTA 500 2026 · Second round · detail
−12.91623.0 → 1610.1
24/08/26 · WTA 500 2026 · First round · detail
+13.41609.7 → 1623.0
beaten by Mirra Andreeva 0–2
14/08/26 · WTA 1000 2026 · Third round · detail
−2.91612.5 → 1609.7
13/08/26 · WTA 1000 2026 · Second round · detail
+15.91596.6 → 1612.5
beaten by Liudmila Samsonova 0–2
04/08/26 · WTA 1000 2026 · First round · detail
−8.11604.7 → 1596.6
27/07/26 · WTA 500 2026 · First round · detail
+12.61592.1 → 1604.7
beaten by Anna Kalinskaya 1–2
27/07/26 · WTA 500 2026 · Second round · detail
−4.71596.8 → 1592.1
beaten by Daria Kasatkina 1–2
01/07/26 · WTA Grand Slam 2026 · Second round · detail
−9.51606.3 → 1596.8
29/06/26 · WTA Grand Slam 2026 · First round · detail
+16.41589.9 → 1606.3
beaten by Caty McNally 1–2
21/06/26 · WTA 250 2026 · First round · detail
−7.81597.6 → 1589.9
beaten by Tatjana Maria 0–2
15/06/26 · WTA 250 2026 · First round · detail
−13.31610.9 → 1597.6
beaten by Greet Minnen 0–2
08/06/26 · WTA 250 2026 · First round · detail
−12.61623.5 → 1610.9
beaten by Emma Navarro 0–2
25/05/26 · WTA Grand Slam 2026 · First round · detail
−7.81631.4 → 1623.5
beaten by Camila Osorio 1–2
18/05/26 · WTA 250 2026 · Second round · detail
−10.01641.4 → 1631.4
beat Caijsa Hennemann 2–0
18/05/26 · WTA 250 2026 · First round · detail
+7.61633.8 → 1641.4
beaten by Peyton Stearns 0–2
06/05/26 · WTA 1000 2026 · First round · detail
−8.91642.7 → 1633.8
beaten by Liudmila Samsonova 0–2
24/04/26 · WTA 1000 2026 · Second round · detail
−9.91652.6 → 1642.7
beat Alina Charaeva 2–0
23/04/26 · WTA 1000 2026 · First round · detail
+7.31645.3 → 1652.6
beaten by McCartney Kessler 0–2
30/03/26 · WTA 500 2026 · Second round · detail
−8.71654.0 → 1645.3
beaten by Yulia Putintseva 1–2
18/03/26 · WTA 1000 2026 · First round · detail
−10.31664.4 → 1654.0
beaten by Jaqueline Cristian 1–2
04/03/26 · WTA 1000 2026 · First round · detail
−11.11675.4 → 1664.4
beaten by Camila Osorio 0–2
23/02/26 · WTA 500 2026 · First round · detail
−12.21687.6 → 1675.4
16/02/26 · WTA 1000 2026 · Second round · detail
+14.71672.9 → 1687.6
16/02/26 · WTA 1000 2026 · First round · detail
+15.01658.0 → 1672.9
beaten by Amanda Anisimova 0–2
16/02/26 · WTA 1000 2026 · Third round · detail
−3.41661.3 → 1658.0
beaten by Iga Świątek 0–2
09/02/26 · WTA 1000 2026 · Second round · detail
−1.81663.1 → 1661.3
09/02/26 · WTA 1000 2026 · First round · detail
+13.21649.9 → 1663.1
beat Maya Joint 2–1
02/02/26 · WTA 500 2026 · First round · detail
+15.61634.3 → 1649.9
beaten by Liudmila Samsonova 0–2
02/02/26 · WTA 500 2026 · Second round · detail
−8.21642.4 → 1634.3
beaten by Karolina Plíšková 0–2
21/01/26 · WTA Grand Slam 2026 · Second round · detail
−9.01651.5 → 1642.4
19/01/26 · WTA Grand Slam 2026 · First round · detail
+17.21634.3 → 1651.5
beaten by Iva Jovic 0–2
12/01/26 · WTA 250 2026 · First round · detail
−11.41645.8 → 1634.3
beaten by Sonay Kartal 1–2
31/12/25 · WTA 250 2026 · First round · detail
−11.01656.7 → 1645.8
beat Mia Pohánková 2–0
27/10/25 · WTA 250 2025 · Quarterfinals · detail
+7.81648.9 → 1656.7

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.