Valkeneers, Koen
Current rating: 1459
Record: 28-35
| Grand Prix London 2016 (KLD limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 505 | Erni, David (1500) | Won 2-0 | +191465 |
| 2sealed | 316 | Harper, Andie (1517) | Won 2-0 | +191484 |
| 3sealed | 127 | Zimmermann, Dominik (1678) | Lost 0-2 | -151469 |
| 4sealed | 740 | Morgan, Geraint (1548) | Won 2-0 | +201489 |
| 5sealed | 487 | Vila, Ferran (1817) | Lost 1-2 | -121477 |
| 6sealed | 440 | Leigh, Maxwell (1517) | Lost 0-2 | -181459 |
| top | average opponent: 1596record: 3-3 | new rating: 1459 | ||
| Grand Prix Stockholm 2016 (EMN limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 45 | Claesson, Gustaf (1500) | Won 2-1 | +191463 |
| 2sealed | 177 | Kirkebo, Erlend (1393) | Lost 0-2 | -191444 |
| 3sealed | 455 | Saaro, Olli (1510) | Lost 0-2 | -171427 |
| 4sealed | 404 | Lehikoinen, Samu (1487) | Won 2-1 | +191446 |
| top | average opponent: 1473record: 2-2 | new rating: 1446 | ||
| Grand Prix Barcelona 2016 (SOI limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 383 | Gonzalez Gutierrez, Roberto (1415) | Lost 0-2 | -191459 |
| 2sealed | 566 | Talavera, Javier (1484) | Won 2-1 | +191478 |
| 3sealed | 764 | Quinn, Sophie (1484) | Lost 0-2 | -181460 |
| 4sealed | 837 | Stiefler, Harald (1580) | Lost 1-2 | -161444 |
| top | average opponent: 1491record: 1-3 | new rating: 1444 | ||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 254 | Depickere, Wim (1608) | Won 0-0 | +191530 |
| 2standard | 381 | Fausch, Torben (1672) | Lost 0-0 | -151515 |
| 3standard | 494 | Fries, Patrick (1479) | Lost 0-2 | -191496 |
| 4standard | 858 | Schmitz, Daniel (1496) | Lost 0-2 | -181478 |
| top | average opponent: 1564record: 1-3 | new rating: 1478 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 262 | Walker, Oliver J (1500) | Lost 0-2 | -181532 |
| 2standard | 311 | Djaelani, Lewis (1482) | Won 2-0 | +171549 |
| 3standard | 397 | Barratt, Matthew (1517) | Lost 0-2 | -191530 |
| 4standard | 386 | Tolvanen, Martti (1454) | Lost 0-2 | -191511 |
| top | average opponent: 1488record: 1-3 | new rating: 1511 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2258 | Kristensen, Morten (1427) | Won 2-0 | +181440 |
| 2sealed | 2137 | Tessmann, Alexej (1518) | Won 2-0 | +201460 |
| 3sealed | 2044 | Brozynski, Elsa (1536) | Won 2-0 | +191479 |
| 4sealed | 2051 | Santos, Virgilio (1632) | Won 2-0 | +211500 |
| 5sealed | 2008 | Solverod, Finn Erik (1630) | Won 2-1 | +201520 |
| 6sealed | 2008 | Dubois, Edouard (1613) | Won 2-1 | +201540 |
| 7sealed | 2012 | Southworth, Luke (1651) | Won 2-0 | +201560 |
| 8sealed | 2005 | Neirynck, Branco (1822) | Lost 0-2 | -131547 |
| 9sealed | 2009 | Kaurinovic, Timmy (1654) | Won 2-0 | +201567 |
| 10draft | 1165 | Hendrikx, Dolf (1823) | Lost 1-2 | -141553 |
| 11draft | 1179 | Brueggemann, Julian (1724) | Won 2-0 | +211574 |
| 12draft | 1034 | Stefanescu, Alexandru (1702) | Won 2-1 | +211595 |
| 13draft | 1064 | Roelofs, Frank (1844) | Lost 1-2 | -141581 |
| 14draft | 1089 | Feyand, Florian (1671) | Lost 0-2 | -161565 |
| 15draft | 1079 | Hendrikx, Dolf (1771) | Lost 1-2 | -151550 |
| top | average opponent: 1668record: 10-5 | new rating: 1550 | ||
| Grand Prix Strasbourg 2014 (KTK limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 905 | Houseworth, Erik (1509) | Lost 0-2 | -171440 |
| 2sealed | 1020 | Schultz, Andreas (1449) | Lost 1-2 | -181422 |
| top | average opponent: 1479record: 0-2 | new rating: 1422 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 75 | Hallavo, Ville (1468) | Won 2-0 | +181467 |
| 2standard | 267 | Peters, Sven (1501) | Won 2-0 | +191486 |
| 3standard | 106 | Monsieurs, Patrick (1471) | Lost 0-2 | -181468 |
| 4standard | 219 | Napierski, Kamil (1654) | Won 2-1 | +211489 |
| 5standard | 287 | Pison, Remi (1536) | Lost 1-2 | -171472 |
| 6standard | 294 | Jathe, Nicolas (1647) | Lost 1-2 | -151457 |
| top | average opponent: 1546record: 3-3 | new rating: 1457 | ||
| Grand Prix Valencia 2013 (THS limited) | starting rating: 1418 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 185 | Almarza, Gustavo (1502) | Won 2-1 | +191437 |
| 2sealed | 94 | Leroy, Yannick (1606) | Won 2-0 | +211458 |
| 3sealed | 186 | Carozzo, Luigi (1441) | Won 2-0 | +181476 |
| 4sealed | 13 | Santos II, Pedro (1597) | Won 2-0 | +201496 |
| 5sealed | 31 | Dietl, Christian (1680) | Lost 1-2 | -141482 |
| 6sealed | 40 | Ganz, Andreas (1642) | Lost 0-2 | -151467 |
| 7sealed | 179 | Esser, Florian (1502) | Lost 1-2 | -181449 |
| top | average opponent: 1567record: 4-3 | new rating: 1449 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 620 | Niemeyer, Gero (1560) | Lost 0-2 | -161411 |
| 2sealed | 747 | Squirewell, Sascha (1538) | Won 2-0 | +211432 |
| 3sealed | 512 | Swain, Dan (1447) | Won 2-1 | +181450 |
| 4sealed | 567 | Costentin, Paul (1579) | Lost 1-2 | -161434 |
| 5sealed | 687 | Hill, Oliver G (1517) | Lost 0-2 | -161418 |
| top | average opponent: 1528record: 2-3 | new rating: 1418 | ||
| Grand Prix Lille 2012 (DKA standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 646 | Amy, Jack (1518) | Lost 0-2 | -171464 |
| 3standard | 765 | Penard, Adrien (1500) | Lost 0-2 | -171447 |
| 4standard | 787 | Schafer, Benedikt (1359) | Lost 1-2 | -201427 |
| top | average opponent: 1459record: 0-3 | new rating: 1427 | ||
| Grand Prix Brussels 2008 (SHM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 148 | Navarro Del Dujo, Carlos (1482) | Lost 1-2 | -181482 |
| 2sealed | 262 | Helsen, Tim (1502) | Lost 0-2 | -181464 |
| 3sealed | 297 | Van Der Haeghe, Werner (1422) | Won 2-1 | +171481 |
| top | average opponent: 1469record: 1-2 | new rating: 1481 | ||