TennisEdge's AI bot is backing Under 18.5 games at 1.92 in J. Grabher vs S. Cirstea (US Open on 2026-08-30). Result: WON.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | J. Grabher | S. Cirstea |
|---|---|---|
| Elo ratings-based, surface-weighted |
11.1% | 88.9% |
| Machine learning 29-feature gradient-boosted model |
16.8% | 83.2% |
| Serve / return point-by-point simulation |
27.3% | 72.7% |
| Blend what the bot actually prices off |
11.1% | 88.9% |
| Market implied de-vigged from the opening odds |
11.9% | 88.1% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| J. Grabher | hard | 1498 | 35–49 | 84 |
| S. Cirstea | hard | 1867 | 102–70 | 172 |
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 Oct. 5, 2026.
S. Cirstea leads 2–0 over 2 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| Aug. 31, 2026 | US Open | hard | S. Cirstea | 2 - 0 |
| April 22, 2022 | Istanbul | clay | S. Cirstea | 2 - 0 |
| L | I. Burillo Escorihuela | 2 - 0 | Nov. 11, 2026 |
| W | T. Zidansek | 0 - 2 | Nov. 9, 2026 |
| L | J. Riera | 0 - 2 | Nov. 4, 2026 |
| W | L. Pigossi | 2 - 1 | Nov. 3, 2026 |
| L | A. Tubello | 2 - 1 | Nov. 1, 2026 |
| L | A. Shubladze | 0 - 2 | Nov. 6, 2026 |
| W | M. Stoiana | 2 - 0 | Nov. 5, 2026 |
| W | M. Timofeeva | 2 - 1 | Nov. 3, 2026 |
| L | M. Joint | 2 - 0 | Oct. 27, 2026 |
| L | S. Bejlek | 0 - 2 | Oct. 21, 2026 |
All Aug. 30, 2026 results & picks →