WTA Rankings
These ratings are weekly market-implied WTA player states. Global parameters are learned and then frozen each off-season, while new prices update player states online. Across 6,381 out-of-sample matches from 2024–25, the resulting forecasts retained 85.4% of the market’s log-loss improvement over a 50/50 forecast. The ratings can simulate any matchup on any surface and trace player strength over time. The model notes define the comparison and describe the fitting process.
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Latest leaderboard
The leaderboard shows the top 500 players with at least one observed match in the prior year. “Win vs avg” is the model’s draw-neutral, one-match probability against the mean active-tour player on the selected surface. Rating intervals are 50% posterior intervals and include uncertainty in the overall state, surface contrast, and their covariance. Click a leaderboard row to add or remove that player from the chart.