Valkenberg, Anton
Current rating: 1491
Record: 29-34
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 306 | Rothen, Christian (1809) | Lost 0-2 | -131523 |
| 4sealed | 710 | Jacoby, Rick (1471) | Lost 0-2 | -191504 |
| 5sealed | 764 | Tajak, Lukas (1805) | Lost 0-2 | -131491 |
| top | average opponent: 1695record: 0-3 | new rating: 1491 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 91 | Brucker, David (1818) | Won 2-0 | +231545 |
| 4sealed | 165 | Felding, Thomas (1591) | Lost 1-2 | -171528 |
| 5sealed | 249 | Clouet, Yann (1596) | Won 2-0 | +191547 |
| 6sealed | 198 | Szymanski, Michal (1542) | Won 2-0 | +181565 |
| 7sealed | 92 | Pastarmadzhiev, Angel (1645) | Lost 0-2 | -171548 |
| 8sealed | 220 | Zavadzkis, Domantas (1861) | Lost 1-2 | -121536 |
| top | average opponent: 1675record: 3-3 | new rating: 1536 | ||
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 91 | Meulders, Bram (1810) | Lost 1-2 | -141542 |
| 4standard | 386 | Gonzalez, Juan (1513) | Lost 0-2 | -181524 |
| 5standard | 313 | Bosman, Robin (1504) | Won 2-1 | +171541 |
| 6standard | 265 | Kracman, Jiri (1543) | Won 2-1 | +181559 |
| 7standard | 123 | Bellemin, Damien (1590) | Lost 0-2 | -171542 |
| 8standard | 201 | Kostaras, Anastasios (1425) | Lost 1-2 | -201522 |
| top | average opponent: 1564record: 2-4 | new rating: 1522 | ||
| Grand Prix Birmingham 2018 (leg) (legacy) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 74 | De Gruyter, Johan (1553) | Lost 1-2 | -181508 |
| 3legacy | 74 | Ferreira, Rosa (1460) | Won 2-1 | +171525 |
| 4legacy | 74 | Jehan, Sean (1585) | Won 2-1 | +191544 |
| 5legacy | 74 | Severin, Thoralf (1981) | Won 2-0 | +261570 |
| 6legacy | 45 | Gotlib, Nathan (1644) | Won 2-1 | +191589 |
| 7legacy | 45 | Le Briand, Loic (1764) | Lost 0-2 | -151574 |
| 8legacy | 45 | Art, Armin (1541) | Lost 0-2 | -181556 |
| top | average opponent: 1647record: 4-3 | new rating: 1556 | ||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 140 | Vuorela, Lauri (1615) | Won 2-1 | +191554 |
| 3standard | 130 | Cammilluzzi, Marco (1853) | Won 2-1 | +231577 |
| 4standard | 111 | Neves, Vasco (1702) | Lost 0-2 | -151562 |
| 5standard | 268 | Wisniewski, Patryk (1648) | Lost 1-2 | -171545 |
| 6standard | 210 | Hurink, Maarten (1735) | Lost 1-2 | -141531 |
| 7standard | 355 | Erdreich, Julien (1284) | Won 2-1 | +131544 |
| 8standard | 320 | Ainali, Jan (1515) | Lost 1-2 | -181526 |
| top | average opponent: 1622record: 3-4 | new rating: 1526 | ||
| Grand Prix Amsterdam 2017 (AKH standard) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 52 | Van Luttervelt, Dave (1549) | Lost 1-2 | -161424 |
| 3standard | 450 | Boersen, Jerryt (1534) | Won 2-0 | +201444 |
| 4standard | 401 | Hittel, Matthias (1609) | Lost 1-2 | -151429 |
| 5standard | 369 | Monferran, Brian (1530) | Won 2-0 | +201449 |
| 6standard | 325 | de Graaff, Claes (1741) | Won 2-0 | +231472 |
| 7standard | 218 | Van Houten, Frank (1482) | Won 2-1 | +181490 |
| 8standard | 169 | Azzouz, Fabrice (1616) | Lost 1-2 | -161474 |
| 9standard | 238 | Strotmeyer, Thomas (1586) | Won 2-0 | +201494 |
| 10standard | 126 | Di Pancrazio, Marc (1458) | Won 2-0 | +181512 |
| 11standard | 117 | Schaller, Sebastian (1736) | Lost 0-2 | -141498 |
| 12standard | 116 | Aristo, Alberto (1457) | Lost 0-2 | -191479 |
| 13standard | 131 | Colin, Antoine (1543) | Won 2-1 | +191498 |
| 14standard | 102 | Bettelhauser, Eike (1472) | Won 2-1 | +181516 |
| 15standard | 99 | Hermanns, Marcus (1559) | Won 2-1 | +191535 |
| top | average opponent: 1562record: 9-5 | new rating: 1535 | ||
| Grand Prix Lille 2016 (modern) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 95 | Justesen, Mads (1496) | Won 2-0 | +191470 |
| 2modern | 206 | Dakic, Aleksandar (1518) | Won 2-1 | +181488 |
| 3modern | 40 | Fogarty, Kevin (1579) | Lost 0-2 | -161472 |
| 4modern | 398 | Shah, Mubashar (1480) | Won 2-1 | +181490 |
| 5modern | 214 | Davesne, Anthony (1349) | Lost 0-2 | -201470 |
| 6modern | 354 | Hatesur, Sven (1427) | Lost 1-2 | -191451 |
| 7modern | 508 | Holzinger, Thomas (1783) | Lost 0-2 | -121439 |
| 8modern | 547 | Deceuninck, Tomas (1484) | Won 2-0 | +191458 |
| 9modern | 443 | Etcheverry, Francois (1477) | Lost 0-2 | -181440 |
| top | average opponent: 1510record: 4-5 | new rating: 1440 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1349 | Tollis, Robert (1500) | Lost 0-2 | -171429 |
| 2sealed | 1448 | Susicki, Olaf (1410) | Won 2-0 | +181447 |
| 3sealed | 1346 | Visser, Leanne (1359) | Won 2-1 | +161463 |
| 4sealed | 1127 | Avedano, Andrea (1401) | Lost 0-2 | -191444 |
| 5sealed | 1316 | Tassiaux, Jean-Noel (1519) | Won 2-0 | +191463 |
| 6sealed | 1281 | Sachsenhausen, Robin (1531) | Won 2-0 | +201483 |
| 7sealed | 1198 | White, Mike (1544) | Lost 0-2 | -171466 |
| 8sealed | 1161 | Tassinari, Luca (1639) | Lost 0-2 | -151451 |
| top | average opponent: 1488record: 4-4 | new rating: 1451 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 403 | Schor, Michael (1500) | Lost 1-2 | -181482 |
| 2standard | 532 | Modliszewski, Adrian (1481) | Lost 0-2 | -181464 |
| 3standard | 724 | Bergmans, Stefan (1464) | Lost 0-2 | -181446 |
| top | average opponent: 1482record: 0-3 | new rating: 1446 | ||