Leung, Koby
Current rating: 1574
Record: 13-9 (GP) / 3-4 (professional)
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 318 | Campbell, Samuel (1518) | Won 2-0 | +171550 |
| 2sealed | 309 | Hodges, Chad (1516) | Won 2-1 | +181568 |
| 3sealed | 269 | Bernard, Matthew (1503) | Won 2-1 | +161584 |
| 4sealed | 145 | Kolbuc, Trevor (1590) | Won 2-1 | +191603 |
| 5sealed | 96 | Shenhar, Shahar (1932) | Lost 1-2 | -131590 |
| 6sealed | 215 | Bouzane, Lawrence (1512) | Lost 0-2 | -191571 |
| 7sealed | 231 | Ross-Latour, Jeremie (1727) | Won 2-0 | +211592 |
| 8sealed | 158 | Tzaneteas, Elliott (1607) | Lost 0-2 | -181574 |
| top | average opponent: 1613record: 5-3 | new rating: 1574 | ||
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 359 | Robins, Scott (1528) | Lost 0-2 | -181512 |
| 5sealed | 406 | Wasson, John (1504) | Won 2-0 | +181530 |
| 6sealed | 405 | Bisson, Stephane (1657) | Lost 1-2 | -161514 |
| 7sealed | 446 | Carle, Etienne (1540) | Won 2-1 | +181532 |
| 8sealed | 387 | Schmidt, Brent (1508) | Won 2-0 | +181550 |
| 9sealed | 385 | Jette, Fabien (1584) | Lost 0-2 | -171533 |
| top | average opponent: 1553record: 3-3 | new rating: 1533 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 7 | Eady, Brent (1500) | Lost 0-2 | -181471 |
| 3sealed | 121 | Kelly, Chris S (1502) | Won 2-0 | +191490 |
| 4sealed | 188 | Miller, Kevin (1501) | Won 2-0 | +181508 |
| 5sealed | 65 | Wice, Alex (1532) | Won 2-0 | +181526 |
| 6sealed | 73 | Boswell, Andrew (1705) | Won 2-0 | +211547 |
| 7sealed | 35 | Edgington, Andrew (1505) | Won 2-0 | +181565 |
| 8sealed | 29 | Flinn, Bradley E (1441) | Lost 0-2 | -211544 |
| 9sealed | 24 | Gottschalk, Evan N (1728) | Lost 0-2 | -141530 |
| top | average opponent: 1552record: 5-3 | new rating: 1530 | ||
| Pro Tour Amsterdam 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 53 | Suarez, Andres (1806) | Lost 0-2 | -131487 |
| 2extended | 206 | Constantine, Ranjith (1442) | Lost 1-2 | -181469 |
| 3extended | 219 | Lemaitre, Benoist (1487) | Lost 0-2 | -181451 |
| 4extended | 208 | Smets, Daan (1472) | Won 2-0 | +181469 |
| 5extended | 187 | Sjoblom, Fabian (1539) | Won 2-0 | +201489 |
| 6draft | 198 | Brandtner, Michael (1435) | Won 2-0 | +171506 |
| 7draft | 16 | Wolff, Tobias (1573) | Lost 0-2 | -171489 |
| top | average opponent: 1536record: 3-4 | new rating: 1489 | ||