Janice Tjen

WTA ELO profile · tour-level matches since 2017

ELO 1542 · #146 Hard #85 Clay #132 Grass #94 Last match: Aug 30, 2026

Season ELO trajectory

One point per match: the player's ELO rating after that match, matches in round order. Ratings are season-scoped: every January the engine re-seeds each player from WTA entry points, then updates after every result. That is why trajectories are shown one season at a time. Hover a point for the match behind it.

Career record

23-27 46.0% in 50 matches

Clay 2-5
Grass 1-4
Hard 20-18

Season by season

SeasonMW-LStartPeakEnd
2026 34 11-23 1608 1663 1542
2025 16 12-4 1514 1695 1695

Recent matches

WeekTournamentOpponentResult
Aug 30, 2026 Us Open · Hard Mirra Andreeva L 0-2
Aug 23, 2026 Monterrey · Hard Yuliia Starodubtseva L 0-2
Dayana Yastremska W 2-1
Aug 13, 2026 Cincinnati · Hard Mirra Andreeva L 0-2
Viktorija Golubic W 2-1
Aug 02, 2026 Montreal · Hard Liudmila Samsonova L 0-2
Jul 27, 2026 Washington Dc · Hard Anna Kalinskaya L 1-2
Rebecca Sramkova W 2-0
Jun 29, 2026 Wimbledon · Grass Daria Kasatkina L 1-2
Leylah Fernandez W 2-0

Serve predictions: how close do we get on Janice Tjen?

2025 · out-of-sample backtest Aces per match: 3.7 actual vs 2.5 projected
- our average miss per match
- baseline average miss (last five matches)
- accuracy edge over the baseline

Not enough matches with a baseline in 2025 for a fair comparison. The chart still shows every match we projected.

The baseline predicts a player's aces as the average of their last five matches. Our model beats it when its projections land closer to what actually happened. Both numbers are the average miss per match, so lower is better, and both are for the selected season only.

Predictability: does Janice Tjen follow the script?

On serve · 2026
SeasonMW-LModel hitUpsetsVerdict
2026 34 11-23 67.6% 11 vs 12.5 exp On serve

An upset = our model's favorite losing. "Upsets" compares how many actually happened in Janice Tjen's matches with how many the model expected for that exact schedule. A season-level read (a wild-card season does not carry over year to year). How to read this · full board: most predictable WTA players.

Reuse this data · CC BY 4.0

The WTA ELO ratings dataset is free to reuse, including commercially, under CC BY 4.0. Attribution with a link is the only requirement. Copy-paste credit:

Data: <a href="https://www.predixsport.com/wta_tennis-power-rankings/janice-tjen">WTA ELO ratings by Predixsport</a> (CC BY 4.0)