Costes, Sebastien
Current rating: 1422
Record: 2-6
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 185 | Martinez, Alban (1500) | Won 2-0 | +181518 |
| 2standard | 268 | Hertwig, Andrea (1404) | Lost 0-2 | -201498 |
| 3standard | 551 | Chaillou, Guillaume (1518) | Lost 0-2 | -181480 |
| 4standard | 496 | Kondo, Hirotsugu (1348) | Lost 0-2 | -201460 |
| 5standard | 561 | Larcher, Samuel (1339) | Lost 1-2 | -201440 |
| 6standard | 560 | Paavonsalo, Mikko (1443) | Lost 0-2 | -181422 |
| 7standard | 517 | Mackowiak, Alexandre (1427) | Lost 0-2 | -181404 |
| 8standard | 474 | Leveau, Vincent (1408) | Won 2-1 | +181422 |
| average opponent: 1423record: 2-6 | new rating: 1422 | |||