TennisEdge's AI model finds no betting value in O. Oliynykova vs K. Birrell (French Open on 2026-05-28) — the market is efficient, with O. Oliynykova favoured at 1.44.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | O. Oliynykova | K. Birrell |
|---|---|---|
| Elo ratings-based, surface-weighted |
90.0% | 10.0% |
| Machine learning 29-feature gradient-boosted model |
88.2% | 11.8% |
| Blend what the bot actually prices off |
89.1% | 10.9% |
| Market implied de-vigged from the opening odds |
65.6% | 34.4% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| O. Oliynykova | clay | 1771 | 174–75 | 249 |
| K. Birrell | hard | 1773 | 149–98 | 247 |
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 24, 2026.
O. Oliynykova leads 1–0 over 1 meeting. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| May 28, 2026 | French Open | clay | O. Oliynykova | 2 - 1 |
| L | Ka. Pliskova | 0 - 2 | Aug. 3, 2026 |
| L | E. Avanesyan | Walk Over | July 24, 2026 |
| W | L. Romero Gormaz | 2 - 1 | July 23, 2026 |
| W | N. M. Schunk | 2 - 1 | July 21, 2026 |
| L | M. Sherif | 2 - 0 | July 18, 2026 |
| L | V. Golubic | 0 - 2 | Aug. 2, 2026 |
| L | Y. Ma | 2 - 0 | July 29, 2026 |
| L | S. Cirstea | 2 - 0 | July 2, 2026 |
| W | A. Korneeva | 2 - 1 | June 30, 2026 |
| L | P. Marcinko | 2 - 0 | June 24, 2026 |
All May 28, 2026 results & picks →
Math-only prediction: no LLM calls used