TennisEdge's AI model finds no betting value in O. Oliynykova vs S. Johnson (Eastbourne on 2026-06-20) — the market is efficient, with O. Oliynykova favoured at 1.23.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | O. Oliynykova | S. Johnson |
|---|---|---|
| Elo ratings-based, surface-weighted |
44.0% | 56.0% |
| Machine learning 29-feature gradient-boosted model |
74.0% | 26.0% |
| Blend what the bot actually prices off |
64.5% | 35.5% |
| Market implied de-vigged from the opening odds |
74.7% | 25.3% |
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 |
| S. Johnson | clay | 1474 | 13–6 | 19 |
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.
S. Johnson leads 1–0 over 1 meeting. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| June 20, 2026 | Eastbourne | grass | S. Johnson | 2 - 0 |
| 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 | S. Hunter | 2 - 1 | July 26, 2026 |
| W | K. K. Thandi | 0 - 2 | July 25, 2026 |
| L | C. Dolehide | 0 - 2 | July 22, 2026 |
| L | H. Kaji | 0 - 2 | July 7, 2026 |
| L | K. Liutova | 2 - 1 | July 2, 2026 |
All June 20, 2026 results & picks →
Math-only prediction: no LLM calls used