Keiser, Pierre
Current rating: 1582
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 352 | Noguez Aignasse, Jason (1658) | Lost 0-2 | -161550 |
| 2pioneer | 432 | Van Uffelen, Bart (1489) | Won 2-1 | +161566 |
| 3pioneer | 582 | Dupasquier, Yvan (1478) | Won 2-0 | +171583 |
| 4pioneer | 364 | Violleau, Pierre (1556) | Won 2-0 | +171600 |
| 5pioneer | 371 | Stube, Martin (1652) | Draw 1-1 | +11601 |
| 6pioneer | 253 | Penno, Dominik (1540) | Lost 0-2 | -191582 |
| 7pioneer | 372 | Lippmann, Robert (1628) | Lost 0-2 | -171565 |
| 8pioneer | 354 | Laurentin, Thomas (1510) | Won 2-1 | +171582 |
| top | average opponent: 1564record: 4-3-1 | new rating: 1582 | ||
| Grand Prix Turin 2018 (M19 limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 205 | Szczerbinski, Dominik (1383) | Won 2-1 | +151548 |
| 2sealed | 53 | Kochetygov, Vladislav (1601) | Won 2-1 | +191567 |
| 3sealed | 140 | Meregalli, Alberto (1462) | Won 2-0 | +161583 |
| 4sealed | 126 | Welbourne, Christopher (1277) | Won 2-1 | +131596 |
| 5sealed | 28 | Boudjema, Charly (1788) | Lost 0-2 | -151581 |
| 6sealed | 50 | Mauri, Marco (1621) | Lost 1-2 | -171564 |
| 7sealed | 136 | Ackermann, Felix (1549) | Lost 0-2 | -181546 |
| 8sealed | 171 | Titonel, Alessandro (1665) | Won 2-1 | +201566 |
| top | average opponent: 1543record: 5-3 | new rating: 1566 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 256 | Honscheid, Benjamin (1500) | Won 2-0 | +181518 |
| 2modern | 431 | Chaptal, Alexis (1518) | Lost 0-2 | -181500 |
| 3modern | 584 | Vivian, Marion (1412) | Won 2-1 | +161516 |
| 4modern | 587 | Charline, Briot (1540) | Won 2-0 | +191535 |
| 5modern | 330 | Zanoni, Emilio (1544) | Lost 0-2 | -181517 |
| 6modern | 496 | Wang, Yichen [BEL] (1479) | Won 2-1 | +171534 |
| 7modern | 419 | Crann, Peter (1460) | Won 2-0 | +171551 |
| 8modern | 148 | Vavilov, George (1546) | Lost 1-2 | -181533 |
| top | average opponent: 1500record: 5-3 | new rating: 1533 | ||