TennisEdge's AI model finds no betting value in S. Ishii vs V. Valdmannova (Birmingham on 2026-05-30) — the market is efficient, with V. Valdmannova favoured at 1.19.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | S. Ishii | V. Valdmannova |
|---|---|---|
| Elo ratings-based, surface-weighted |
37.3% | 62.7% |
| Machine learning 29-feature gradient-boosted model |
14.5% | 85.5% |
| Blend what the bot actually prices off |
25.9% | 74.1% |
| Market implied de-vigged from the opening odds |
21.9% | 78.1% |
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. Ishii | hard | 1446 | 69–59 | 128 |
| V. Valdmannova | hard | 1730 | 63–30 | 93 |
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 July 31, 2026.
V. Valdmannova leads 2–0 over 2 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| June 7, 2026 | Ilkley | grass | V. Valdmannova | 2 - 0 |
| May 30, 2026 | Birmingham | grass | V. Valdmannova | 2 - 1 |
| L | R. Saigo | 2 - 0 | July 31, 2026 |
| W | H. Sato | 2 - 1 | July 30, 2026 |
| W | F. Gandolfi | 2 - 1 | July 29, 2026 |
| L | H. Klugman | 0 - 2 | July 14, 2026 |
| L | K. Cross | 0 - 2 | July 8, 2026 |
| W | M. Podlinska | 0 - 2 | Aug. 4, 2026 |
| W | A. Rajecki | 2 - 0 | Aug. 2, 2026 |
| W | V. Ryser | 2 - 1 | Aug. 1, 2026 |
| W | V. Allen | 2 - 1 | July 31, 2026 |
| W | I. L. Van den Broek | 2 - 1 | July 30, 2026 |
All May 30, 2026 results & picks →
Math-only prediction: no LLM calls used