Sanctioned Matchup Predictor
Samuel Mammino vs Sheryl O'Brien
Past Head-to-Head Rubbers (3)
| Winner | Loser | Score | Event | Rating Delta | |
|---|---|---|---|---|---|
| Samuel Mammino | def. | Sheryl O'Brien | 4-0 | Wynnum Fixtures - Spring 2026 - Round 7 (2026-10-05) | +5 |
| Samuel Mammino | def. | Sheryl O'Brien | 4-0 | Wynnum Fixtures - Winter 2026 - Round 13 (2026-07-27) | +18 |
| Samuel Mammino | def. | Sheryl O'Brien | 4-0 | Wynnum Fixtures - Spring 2026 - Round 2 (2026-08-31) | +11 |