Guillaume, Theo
Current rating: 1454
| Grand Prix Barcelona 2019 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 156 | Moynihan, Kevin (1445) | Lost 0-2 | -181471 |
| 2modern | 437 | Ruano Ortega, Pedro (1561) | Lost 0-2 | -171454 |
| 3modern | 740 | Teodonio, Fabrizio (1468) | Lost 1-2 | -181436 |
| 4modern | 723 | Nieto Cano, Toni (1402) | Draw 1-1 | 01436 |
| 5modern | 688 | Draganov, Pavel (1445) | Won 2-0 | +181454 |
| top | average opponent: 1464record: 1-3-1 | new rating: 1454 | ||
| Grand Prix Prague 2018 (modern) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 610 | Rabyniuk, Vojtech (1417) | Lost 0-2 | -191428 |
| 2modern | 679 | Tobiska, Richard (1482) | Won 2-0 | +191447 |
| 3modern | 800 | Clark, Tom (1531) | Won 2-0 | +201467 |
| 4modern | 585 | Buck, Rene (1521) | Won 2-0 | +191486 |
| 5modern | 198 | Mittendorfer, Lukas (1703) | Lost 1-2 | -141472 |
| 6modern | 407 | Gollor, Marcus (1380) | Won 2-1 | +161488 |
| 7modern | 259 | Moser, Christoph (1522) | Lost 0-2 | -181470 |
| 8modern | 415 | Duda, Tobias (1520) | Won 2-1 | +191489 |
| top | average opponent: 1509record: 5-3 | new rating: 1489 | ||
| Grand Prix Metz 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Gilis, Alexandre (1484) | Lost 0-1 | -181482 |
| 2sealed | 453 | Charline, Briot (1484) | Lost 1-2 | -181464 |
| 3sealed | 696 | Maeyens, Jan (1464) | Won 2-0 | +181482 |
| 4sealed | 517 | Ernoult, Jacques (1480) | Lost 0-2 | -181464 |
| 5sealed | 623 | Sevenich, Sascha (1462) | Lost 1-2 | -181446 |
| 6sealed | 611 | Dubois, Edouard (1518) | Won 2-0 | +191465 |
| 7sealed | 554 | Barker, Zoe Anne (1447) | Lost 0-2 | -181447 |
| top | average opponent: 1477record: 2-5 | new rating: 1447 | ||