Toombs, Jonathan
Current rating: 1532
Record: 6-4
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 108 | Cook, Gabriel (1500) | Won 2-1 | +181536 |
| 2sealed | 24 | Greeson, Gary (1518) | Lost 1-2 | -191517 |
| 3sealed | 317 | Hochman, Sabrina (1437) | Lost 0-2 | -191498 |
| 4sealed | 299 | Shipman, Nicholas (1505) | Won 2-1 | +181516 |
| 5sealed | 250 | Hunt, Megan (1477) | Won 2-0 | +171533 |
| 6sealed | 175 | Andrews, Luke (1469) | Won 2-1 | +171550 |
| 7sealed | 115 | Musick, David (1569) | Lost 1-2 | -181532 |
| average opponent: 1496record: 4-3 | new rating: 1532 | |||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 105 | Lowry, Matthew (1470) | Won 2-0 | +171517 |
| 2sealed | 211 | Reichelt, Catrina (1518) | Won 2-1 | +181535 |
| 3sealed | 167 | Diep, Minh (1562) | Lost 0-2 | -171518 |
| average opponent: 1517record: 2-1 | new rating: 1518 | |||