Witbreuk, Rhuben
Current rating: 1445
Record: 12-16
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 83 | Daszkiewicz, Sebastian (1510) | Lost 0-2 | -181459 |
| 2standard | 496 | Wild, Emilien (1604) | Lost 0-2 | -151444 |
| 3standard | 716 | Murza, Robertas (1466) | Won 2-0 | +181462 |
| 4standard | 530 | Gutesa, David (1508) | Lost 1-2 | -171445 |
| top | average opponent: 1522record: 1-3 | new rating: 1445 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2072 | Parker, Michael (1386) | Lost 1-2 | -201454 |
| 2sealed | 2327 | van Zutphen, Ronald (1672) | Lost 0-2 | -141440 |
| 3sealed | 2443 | Brouns, Remco (1463) | Won 2-0 | +181458 |
| 4sealed | 2308 | Aebersold, Thomas (1371) | Won 2-1 | +171475 |
| 5sealed | 2226 | Pellarini, Raul (1500) | Won 2-0 | +181493 |
| 6sealed | 2142 | Mate, Marian (1561) | Lost 0-2 | -161477 |
| top | average opponent: 1492record: 3-3 | new rating: 1477 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 305 | Dunn, Dennis (1502) | Won 2-1 | +191424 |
| 2standard | 30 | Janasiewicz, Alexandre (1519) | Lost 1-2 | -161408 |
| 3standard | 541 | Johansson, Felix (1503) | Lost 1-2 | -161392 |
| 4standard | 584 | Augustin, Tony (1484) | Won 2-1 | +191411 |
| 5standard | 409 | Graf, Michael (1467) | Won 2-1 | +201431 |
| 6standard | 246 | Heidemueller, Susann (1483) | Won 2-1 | +181449 |
| 7standard | 188 | Hoonderd, Marco (1486) | Lost 1-2 | -171432 |
| 8standard | 236 | mueller, jim (1528) | Won 2-0 | +201452 |
| 9standard | 164 | Clouet, Yann (1662) | Won 2-0 | +221474 |
| top | average opponent: 1515record: 6-3 | new rating: 1474 | ||
| Grand Prix Antwerp 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 111 | Kruithof, Nick (1532) | Lost 1-2 | -171483 |
| 2modern | 430 | Anciaux, Audrey (1482) | Won 2-1 | +181501 |
| 3modern | 415 | lau, deric (1501) | Lost 0-2 | -181483 |
| 4modern | 688 | Davesne, Anthony (1396) | Lost 0-2 | -201463 |
| 5modern | 707 | Riedel, Tim (1468) | Lost 0-2 | -181445 |
| 6modern | 653 | Schoon, Benjamin (1447) | Won 2-1 | +181463 |
| 7modern | 512 | Alexandrov, Edward (1404) | Lost 0-2 | -191444 |
| 8modern | 464 | Mersel, Danny (1361) | Lost 0-2 | -191425 |
| 9modern | 388 | Vassalle, Fabio (1317) | Lost 0-2 | -201405 |
| top | average opponent: 1434record: 2-7 | new rating: 1405 | ||