TennisEdge's AI bot is backing K. Birrell (moneyline) at 1.89 in K. Birrell vs P. Marcinko (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 | K. Birrell | P. Marcinko |
|---|---|---|
| Elo ratings-based, surface-weighted |
57.1% | 42.9% |
| Machine learning 29-feature gradient-boosted model |
67.1% | 32.9% |
| Serve / return point-by-point simulation |
48.0% | 52.0% |
| Blend what the bot actually prices off |
56.9% | 43.1% |
| Market implied de-vigged from the opening odds |
55.7% | 44.3% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| K. Birrell | hard | 1751 | 157–105 | 262 |
| P. Marcinko | hard | 1594 | 80–48 | 128 |
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. 29, 2026.
K. Birrell leads 2–1 over 3 meetings. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| Aug. 31, 2026 | US Open | hard | K. Birrell | 2 - 1 |
| June 24, 2026 | Eastbourne | grass | P. Marcinko | 2 - 0 |
| Feb. 24, 2026 | WTA Austin | hard | K. Birrell | 2 - 1 |
| L | A. Parks | 2 - 0 | Oct. 29, 2026 |
| L | D. Kasatkina | 0 - 2 | Oct. 25, 2026 |
| W | A. Ito | 2 - 0 | Oct. 24, 2026 |
| L | K. Volynets | 1 - 2 | Oct. 13, 2026 |
| L | M. Bouzkova | 2 - 0 | Oct. 3, 2026 |
| L | K. Birrell | 2 - 1 | Aug. 31, 2026 |
| L | A. Parks | 2 - 1 | Aug. 24, 2026 |
| L | S. Waltert | 2 - 1 | Aug. 13, 2026 |
| L | T. Zidansek | 2 - 0 | July 17, 2026 |
| W | E. Avanesyan | 0 - 2 | July 15, 2026 |
All Aug. 30, 2026 results & picks →