Assen, Johan
Current rating: 1554
Record: 25-18-3 (GP) / 7-11-3 (professional)
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 33 | Vendrame, Nicola (1518) | Lost 0-2 | -191555 |
| 5extended | 147 | Kennes, Johan (1652) | Lost 1-2 | -161539 |
| 6extended | 178 | Hegmann, Thorsten (1517) | Won 2-0 | +171556 |
| 7extended | 124 | Hopkins, Jon (1453) | Won 2-0 | +171573 |
| 8extended | 120 | Rood, Dennis (1532) | Lost 0-2 | -191554 |
| top | average opponent: 1535record: 2-3 | new rating: 1554 | ||
| Pro Tour New Orleans 2003 (extended) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 104 | Widuch, Piotr (1497) | Won 2-0 | +161651 |
| 2extended | 72 | Ivcec, Ivan (1527) | Lost 1-2 | -211630 |
| 3extended | 119 | Parnell, Taylor (1525) | Lost 1-2 | -201610 |
| 4extended | 109 | Maaten, Rogier (1687) | Lost 0-2 | -161594 |
| 5extended | 133 | Rood, David (1735) | Won 2-1 | +201614 |
| 6extended | 124 | Hayes, Ryan D (1493) | Lost 0-2 | -201594 |
| 7extended | 108 | Failla, Andrea (1477) | Lost 1-2 | -201574 |
| top | average opponent: 1563record: 2-5 | new rating: 1574 | ||
| Grand Prix Seville 2003 (LGN limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 41 | Alba Sanchez, Nicolas (1465) | Won 2-1 | +151623 |
| 2sealed | 102 | Rubio, Oscar (1518) | Won 2-0 | +161639 |
| 3sealed | 25 | Fernandez, Ignacio (1536) | Won 2-1 | +171656 |
| 4sealed | 53 | Sousa, Luis (1804) | Won 2-0 | +201676 |
| 5sealed | 16 | Martin, Jose Manuel (1572) | Lost 0-2 | -201656 |
| 6sealed | 73 | Garcia, Gabriel (1507) | Draw 1-1 | -21654 |
| 7sealed | 66 | Rodriguez, Rafael (1624) | Lost 1-2 | -191635 |
| top | average opponent: 1575record: 4-2-1 | new rating: 1635 | ||
| Grand Prix Antwerp 2002 (TOR limited) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 47 | Horemans, Michiel (1563) | Won 2-0 | +171604 |
| 3sealed | 38 | Morooka, Takeo (1500) | Won 2-0 | +171621 |
| 4sealed | 50 | Meyer, Stephan (1731) | Lost 1-2 | -161605 |
| 5sealed | 111 | Jonsson, Anton (1867) | Won 2-0 | +221627 |
| 6sealed | 46 | ten Voorde, Tomas (1557) | Lost 1-2 | -191608 |
| top | average opponent: 1643record: 3-2 | new rating: 1608 | ||
| Pro Tour San Diego 2002 (ODY rochester) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 64 | Pope, David (1446) | Lost 1-2 | -201560 |
| 2rochester | 93 | Weidemann, Roman (1543) | Won 2-0 | +171577 |
| 3rochester | 153 | Ranks, Matthew (1630) | Lost 0-2 | -171560 |
| 4rochester | 93 | Jirapongtrakul, Boonchai (1581) | Draw 1-1 | +11561 |
| 5rochester | 11 | Davis, Brian (1780) | Won 2-0 | +221583 |
| 6rochester | 95 | Neki, Haruyuki (1513) | Won 2-0 | +161599 |
| 7rochester | 68 | Geertsen, Svend (1913) | Lost 1-2 | -121587 |
| top | average opponent: 1629record: 3-3-1 | new rating: 1587 | ||
| Grand Prix Warsaw 2001 (Invasion block) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 93 | Brun, Markhu (1500) | Won 2-0 | +171542 |
| 2block | 7 | Krasniewski, Daniel (1518) | Draw 1-1 | 01542 |
| 3block | 63 | Kwak, Adam (1518) | Won 2-0 | +171559 |
| 4block | 41 | Gieron, Lukasz (1558) | Won 2-1 | +181577 |
| 5block | 18 | Marek, Libor (1610) | Won 2-1 | +191596 |
| 6block | 12 | Lantukhov, Danil (1538) | Won 2-0 | +171613 |
| 7block | 6 | Tokoli, Zsolt (1646) | Lost 0-2 | -181595 |
| 8block | 15 | Karlsson, Morgan (1739) | Lost 0-2 | -151580 |
| top | average opponent: 1578record: 5-2-1 | new rating: 1580 | ||
| Grand Prix Cologne 2001 (PLS limited) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 73 | Spath, Jochen (1500) | Won 2-1 | +171565 |
| 2sealed | 2 | Mechura, Jan (1475) | Lost 1-2 | -201545 |
| 3sealed | 131 | Ottersen, Bjorn (1563) | Lost 0-2 | -171528 |
| 4sealed | 182 | Brundler, Alex (1432) | Lost 1-2 | -201508 |
| 5sealed | 218 | Hatto, Steve (1435) | Won 2-0 | +171525 |
| top | average opponent: 1481record: 2-3 | new rating: 1525 | ||
| Grand Prix Amsterdam 2001 (INV limited) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 166 | van de Berg, Steven (1500) | Won 2-0 | +171548 |
| 2sealed | 64 | Schipper, Ernst (1476) | Won 2-0 | +171565 |
| 3sealed | 5 | Gromko, Radoslaw (1636) | Lost 0-2 | -171548 |
| 4sealed | 174 | Schweneke, Philipp (1488) | Lost 1-2 | -191529 |
| 5sealed | 181 | Duciel, Marc (1560) | Won 2-0 | +191548 |
| top | average opponent: 1532record: 3-2 | new rating: 1548 | ||
| Grand Prix Copenhagen 2000 (PCY limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Tregaro, Thierry (1500) | Won 1-0 | +181515 |
| 2sealed | 50 | Jensen, Peter (1482) | Draw 1-1 | -11514 |
| 3sealed | 69 | van den Hanenberg, Frank (1500) | Lost 0-2 | -181496 |
| 4sealed | 131 | Olsen, Michael (1500) | Won 2-1 | +181514 |
| 5sealed | 84 | LaBeau, Mike (1502) | Won 2-0 | +181532 |
| 6sealed | 55 | Hansen, Finn (1569) | Won 2-0 | +181550 |
| 7sealed | 39 | Oksman, Dan (1537) | Won 2-0 | +181568 |
| 8rochester | 18 | Lindberg, Goran (1575) | Won 2-1 | +181586 |
| 9rochester | 30 | Poulsen, Palle (1511) | Lost 0-2 | -191567 |
| 10rochester | 9 | Gagg, Norman (1573) | Lost 0-2 | -181549 |
| 11rochester | 15 | Andersson, Thomas (1556) | Lost 0-0 | -181531 |
| top | average opponent: 1528record: 6-4-1 | new rating: 1531 | ||
| Pro Tour New York 2000 (Masques block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 98 | Herzog, Nicolai (1836) | Draw 1-1 | +61506 |
| 2block | 77 | Schickli, Jason (1551) | Draw 1-1 | +11507 |
| 3block | 111 | Hacker, Brian (1623) | Won 2-0 | +201527 |
| 4block | 71 | Rider, Justin (1584) | Lost 0-2 | -171510 |
| 5block | 102 | Sorino, Roger (1584) | Lost 0-2 | -171493 |
| 6block | 110 | Peretti, Jean-Paul (1490) | Won 2-0 | +181511 |
| 7block | 85 | O'Mahoney-Schwartz, Steven (1698) | Lost 0-2 | -141497 |
| top | average opponent: 1624record: 2-3-2 | new rating: 1497 | ||