TennisEdge's AI model finds no betting value in T. Griekspoor vs Z. Zhang (Hertogenbosch on 2026-06-11) — the market is efficient, with T. Griekspoor favoured at 1.40.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | T. Griekspoor | Z. Zhang |
|---|---|---|
| Elo ratings-based, surface-weighted |
59.4% | 40.6% |
| Machine learning 29-feature gradient-boosted model |
70.2% | 29.8% |
| Blend what the bot actually prices off |
64.8% | 35.2% |
| Market implied de-vigged from the opening odds |
68.2% | 31.8% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| T. Griekspoor | hard | 1796 | 86–76 | 162 |
| Z. Zhang | hard | 1600 | 84–86 | 170 |
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 27, 2026.
Z. Zhang leads 1–0 over 1 meeting. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| June 11, 2026 | Hertogenbosch | grass | Z. Zhang | 2 - 0 |
| L | A. Tabilo | 2 - 1 | July 27, 2026 |
| L | C. Norrie | 2 - 3 | July 18, 2026 |
| L | J. Fonseca | 3 - 1 | July 18, 2026 |
| W | C. Moutet | 2 - 3 | July 16, 2026 |
| L | J. Duckworth | 1 - 3 | June 30, 2026 |
All June 11, 2026 results & picks →
Math-only prediction: no LLM calls used