TennisEdge's AI model finds no betting value in S. Zhang vs E. Navarro (Strasbourg on 2026-05-21) — the market is efficient, with E. Navarro favoured at 1.35.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | S. Zhang | E. Navarro |
|---|---|---|
| Elo ratings-based, surface-weighted |
21.9% | 78.1% |
| Machine learning 29-feature gradient-boosted model |
20.3% | 79.7% |
| Serve / return point-by-point simulation |
46.3% | 53.7% |
| Blend what the bot actually prices off |
29.5% | 70.5% |
| Market implied de-vigged from the opening odds |
29.2% | 70.8% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| S. Zhang | hard | 1727 | 111–88 | 199 |
| E. Navarro | hard | 1713 | 86–63 | 149 |
Our own ratings, computed from match results since 2018. Players with fewer than 5 rated matches are omitted rather than shown at a provisional starting value. Last updated Aug. 3, 2026.
S. Zhang leads 3–1 over 4 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| May 21, 2026 | Strasbourg | clay | E. Navarro | 2 - 1 |
| Feb. 27, 2026 | WTA Merida | hard | S. Zhang | 2 - 0 |
| Oct. 7, 2025 | Wuhan | hard | S. Zhang | 2 - 1 |
| Sept. 27, 2024 | WTA Beijing | hard | S. Zhang | 2 - 0 |
| W | Y. Putintseva | 0 - 2 | Aug. 3, 2026 |
| L | G. Knutson | 1 - 2 | July 25, 2026 |
| L | K. Muchova | 2 - 0 | July 1, 2026 |
| W | B. Andreescu | 0 - 2 | June 29, 2026 |
| L | G. Ruse | 0 - 2 | June 20, 2026 |
| L | E. Cocciaretto | 1 - 2 | July 29, 2026 |
| W | S. Kenin | 2 - 0 | July 27, 2026 |
| L | M. Kostyuk | 1 - 2 | July 4, 2026 |
| W | O. Selekhmeteva | 2 - 1 | July 2, 2026 |
| W | P. Badosa | 2 - 1 | June 30, 2026 |
All May 21, 2026 results & picks →
Math-only prediction: no LLM calls used