Merkus, Jan
Current rating: 1460
Record: 5-8-3
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 251 | Ellouze, Mustapha (1563) | Won 2-0 | +201467 |
| 2standard | 19 | Bottoni, Sinan (1510) | Draw 1-1 | 01467 |
| 3standard | 337 | Schad, Lucas (1552) | Won 2-0 | +201487 |
| 4standard | 175 | Bardini, Alain (1858) | Lost 1-2 | -121475 |
| 5standard | 319 | Foret, Laurent (1515) | Lost 0-2 | -171458 |
| 6standard | 433 | Albert, Francois (1453) | Lost 0-2 | -181440 |
| 7standard | 447 | Schlegel, Michael (1512) | Won 2-0 | +191459 |
| 8standard | 354 | Pothier, Guillaume (1466) | Draw 1-1 | +11460 |
| average opponent: 1554record: 3-3-2 | new rating: 1460 | |||
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 44 | Mattsson, Jakob (1574) | Draw 1-1 | +11501 |
| 2standard | 225 | Hagglund, Fredrik (1474) | Lost 1-2 | -181483 |
| 3standard | 475 | Quach, Kenil (1481) | Lost 1-2 | -181465 |
| 4standard | 516 | Hoste, Yanin (1424) | Won 2-1 | +171482 |
| 5standard | 454 | Gonzalez, Marcal (1485) | Lost 1-2 | -181464 |
| 6standard | 456 | Lott, Gareth (1472) | Lost 0-2 | -181446 |
| 7standard | 428 | Munoz, Miguel (1458) | Won 2-0 | +181464 |
| 8standard | 366 | Nicolas, Leloup (1470) | Lost 0-2 | -171447 |
| average opponent: 1480record: 2-5-1 | new rating: 1447 | |||