TennisEdge's AI model finds no betting value in P. Marcinko vs S. Waltert (Eastbourne on 2026-06-20) — the market is efficient, with P. Marcinko favoured at 1.72.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | P. Marcinko | S. Waltert |
|---|---|---|
| Elo ratings-based, surface-weighted |
48.3% | 51.7% |
| Machine learning 29-feature gradient-boosted model |
73.7% | 26.3% |
| Blend what the bot actually prices off |
48.3% | 51.7% |
| Market implied de-vigged from the opening odds |
53.8% | 46.2% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| P. Marcinko | clay | 1727 | 89–46 | 135 |
| S. Waltert | clay | 1732 | 123–80 | 203 |
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 17, 2026.
S. Waltert leads 3–1 over 4 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| June 20, 2026 | Eastbourne | grass | P. Marcinko | 2 - 1 |
| May 14, 2024 | ITF W75 Zagreb Women | clay | S. Waltert | 2 - 0 |
| Jan. 9, 2024 | WTA Australian Open | hard | S. Waltert | 2 - 0 |
| July 19, 2023 | Iasi Challenger Women | clay | S. Waltert | 2 - 0 |
| L | T. Zidansek | 2 - 0 | July 17, 2026 |
| W | E. Avanesyan | 0 - 2 | July 15, 2026 |
| W | N. Podoroska | 1 - 2 | July 13, 2026 |
| L | C. Burel | 1 - 2 | July 7, 2026 |
| L | S. Kenin | 0 - 2 | June 30, 2026 |
| L | M. Sherif | 1 - 2 | July 22, 2026 |
| L | K. Kawa | 2 - 0 | July 14, 2026 |
| L | P. Badosa | 0 - 2 | July 11, 2026 |
| W | K. Quevedo | 0 - 2 | July 10, 2026 |
| W | L. Romero Gormaz | 2 - 0 | July 9, 2026 |
All June 20, 2026 results & picks →
Math-only prediction: no LLM calls used