TennisEdge's AI model finds no betting value in A. Sabalenka vs J. Ostapenko (Wimbledon on 2026-07-03) — the market is efficient, with A. Sabalenka favoured at 1.27.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | A. Sabalenka | J. Ostapenko |
|---|---|---|
| Elo ratings-based, surface-weighted |
69.9% | 30.1% |
| Machine learning 29-feature gradient-boosted model |
76.7% | 23.3% |
| Serve / return point-by-point simulation |
56.3% | 43.7% |
| Blend what the bot actually prices off |
70.4% | 29.6% |
| Market implied de-vigged from the opening odds |
77.0% | 23.0% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| A. Sabalenka | hard | 2224 | 196–58 | 254 |
| J. Ostapenko | hard | 1767 | 88–73 | 161 |
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 March 28, 2026.
A. Sabalenka leads 4–1 over 5 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| July 3, 2026 | Wimbledon | grass | A. Sabalenka | 2 - 0 |
| April 21, 2025 | Stuttgart | clay | J. Ostapenko | 2 - 0 |
| May 15, 2024 | WTA Rome | clay | A. Sabalenka | 2 - 0 |
| Feb. 22, 2023 | Dubai | hard | A. Sabalenka | 2 - 1 |
| Sept. 13, 2019 | Zhengzhou | hard | A. Sabalenka | 2 - 0 |
| L | N. Osaka | 0 - 2 | July 5, 2026 |
| W | J. Ostapenko | 2 - 0 | July 3, 2026 |
| W | M. Kessler | 2 - 0 | July 1, 2026 |
| W | T. Kostovic | 2 - 0 | June 29, 2026 |
| L | J. Pegula | 1 - 2 | June 20, 2026 |
| L | A. Sabalenka | 2 - 0 | July 3, 2026 |
| W | A. Ruzic | 2 - 0 | July 1, 2026 |
| W | H. Dart | 2 - 1 | June 29, 2026 |
| L | T. Maria | 1 - 0 | June 26, 2026 |
| W | Z. Sonmez | 2 - 0 | June 25, 2026 |
All July 3, 2026 results & picks →
═══════════════════════════════════════════════ A. Sabalenka vs J. Ostapenko Wimbledon · grass · 1/16-finals · 2026-07-03 ═══════════════════════════════════════════════ MODELS Market: A 1.27 / B 4.24 (impl A 76.9% · B 23.0%) ELO: A 69.9% ← only model below the line ML: A 76.7% ← market-anchored, agrees with market Model: A 70.4% (value_pick B, edge +6.6%) FORM — A. Sabalenka (grass, last 90d) W Kessler (1688 Strong) 6-1 7-6 GRIND W Kostovic (1755 Strong) 6-2 6-3 DOM L Pegula (1865 Elite) 4-6 7-6 0-6 (Berlin SF) W Bartunkova(1794 Strong) 2-6 7-6 6-4 GRIND W Alexandrova(1780 Strong)6-4 6-4 DOM → beating a wall of Strong opponents on grass; only loss to Elite Pegula. FORM — J. Ostapenko (grass, last 90d) W Ruzic (1641 Avg) 6-2 6-0 DOM W Dart (1568 Avg) 6-3 3-6 6-4 GRIND L Maria (1804 Strong) 6-1 1-2 RETIRED (Eastbourne SF) W Sonmez (1761 Strong) 6-3 6-0 DOM W Udvardy (1568 Avg) 3-6 6-1 6-2 GRIND W Jones (1400 Weak) 6-2 6-2 DOM → good grass run to Eastbourne SF, but scalps are mostly Avg/Weak; only Sonmez as a Strong win. FATIGUE Sabalenka: 5 matches/14d · 375min court · b2b 1 · rest 2d Ostapenko: 6 matches/14d · 343min court · b2b 2 · rest 2d + MID-MATCH RETIREMENT in Eastbourne SF (06-26) → court time roughly equal, but Ostapenko carries the heavier load and a fresh physical flag. NARRATIVE Let-down: none (neither won a recent Final) Venue: both opening their Wimbledon campaigns, no title recency Physical: Ostapenko retired mid-SF 7 days ago — unresolved concern VERDICT — PASS The +6.6% "value" on Ostapenko is driven ENTIRELY by ELO (69.9%). The market-anchored ML sits at 76.7%, essentially on the 77% line — no ML disagreement to validate the edge. Qualitatively the read runs AGAINST the underdog: Sabalenka is grinding through Strong-tier grass opposition while Ostapenko's wins are padded on Avg/Weak names, and Ostapenko owns the heavier 14d schedule plus a mid-match retirement a week ago. Phantom ELO edge, killed by consensus + qualitative read. No bet. ═══════════════════════════════════════════════