TennisEdge's AI model finds no betting value in S. Hunter vs S. Costoulas (Wimbledon on 2026-06-23) — the market is efficient, with S. Hunter favoured at 1.45.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | S. Hunter | S. Costoulas |
|---|---|---|
| Elo ratings-based, surface-weighted |
71.5% | 28.5% |
| Machine learning 29-feature gradient-boosted model |
62.7% | 37.3% |
| Blend what the bot actually prices off |
65.4% | 34.6% |
| Market implied de-vigged from the opening odds |
62.3% | 37.7% |
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. Hunter | hard | 1700 | 71–45 | 116 |
| S. Costoulas | hard | 1570 | 131–79 | 210 |
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 28, 2026.
S. Hunter leads 1–0 over 1 meeting. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| June 23, 2026 | Wimbledon | grass | S. Hunter | 2 - 0 |
| L | C. Osorio | 2 - 0 | July 28, 2026 |
| W | S. Johnson | 2 - 1 | July 26, 2026 |
| L | A. Sasnovich | 2 - 1 | June 24, 2026 |
| W | S. Costoulas | 2 - 0 | June 23, 2026 |
| W | A. Sasnovich | 2 - 1 | June 7, 2026 |
| L | G. Knutson | 2 - 0 | Aug. 4, 2026 |
| L | M. Inglis | 0 - 2 | July 29, 2026 |
| W | L. Cabrera | 0 - 2 | July 29, 2026 |
| L | A. Aksu | 2 - 1 | July 20, 2026 |
| W | A. Aksu | 2 - 0 | July 19, 2026 |
All June 23, 2026 results & picks →
Math-only prediction: no LLM calls used