Sanctioned Matchup Predictor
David Williamson vs Lorraine Halleday
Past Head-to-Head Rubbers (6)
| Winner | Loser | Score | Event | Rating Delta | |
|---|---|---|---|---|---|
| David Williamson | def. | Lorraine Halleday | MGTTC Spring Season - Week 8 (2025-12-03) | +6 | |
| David Williamson | def. | Lorraine Halleday | MGTTC Spring 2024 Week 6 (2024-12-11) | +27 | |
| Lorraine Halleday | def. | David Williamson | MGTTC Winter 2024 Week 6 (2024-08-28) | +12 | |
| David Williamson | def. | Lorraine Halleday | 6,-8,5,2 | MGTTC Summer Season 2026 - Week 10 (2026-04-01) | +6 |
| David Williamson | def. | Lorraine Halleday | MGTTC Winter Season - Week 8 (2025-09-17) | +7 | |
| David Williamson | def. | Lorraine Halleday | 5,8,8 | MGTTC Summer Season 2026 - Week 5 (2026-02-25) | +8 |