Kooyman, Brian
Current rating: 1379
Record: 10-17-1 (GP) / 1-3 (professional)
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 97 | Egashira, Kenji (1879) | Lost 0-2 | -101412 |
| 2sealed | 345 | Fortuna, Bret (1465) | Lost 1-2 | -171395 |
| 3sealed | 572 | Amoth, Nate (1475) | Lost 1-2 | -161379 |
| top | average opponent: 1607record: 0-3 | new rating: 1379 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 165 | Salas, Spencer (1559) | Lost 0-2 | -161437 |
| 2sealed | 641 | Leyba, Andrew (1430) | Draw 1-1 | 01437 |
| 3sealed | 976 | Yamamoto, Reid (1482) | Lost 0-2 | -181419 |
| 4sealed | 1013 | Mueller, Natalie (1450) | Won 2-0 | +191438 |
| 5sealed | 862 | McCoy, Kyle (1497) | Won 2-1 | +191457 |
| 6sealed | 693 | Nelson, Ian (1523) | Lost 1-2 | -171440 |
| 7sealed | 700 | Miranda, Eric (1452) | Lost 0-2 | -181422 |
| top | average opponent: 1485record: 2-4-1 | new rating: 1422 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 506 | Shinpaugh, Shawn (1500) | Won 2-1 | +191475 |
| 2sealed | 344 | Bradshaw, Blake (1467) | Lost 0-2 | -181457 |
| 3sealed | 728 | Smith, Matthew (1619) | Won 2-0 | +211478 |
| 4sealed | 220 | Chieng, Lawrence (1470) | Lost 1-2 | -181460 |
| 5sealed | 454 | Yeh, Chih-Cheng (1856) | Lost 1-2 | -111449 |
| 6sealed | 571 | Latimer, Steven (1436) | Won 2-0 | +171466 |
| 7sealed | 570 | Bundy, Adam (1707) | Lost 0-2 | -131453 |
| top | average opponent: 1579record: 3-4 | new rating: 1453 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 149 | Liu, Richard (1595) | Lost 0-2 | -161473 |
| 4sealed | 149 | Gale, Gregory (1533) | Lost 0-2 | -171456 |
| top | average opponent: 1564record: 0-2 | new rating: 1456 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1046 | Moore, Hugh (1432) | Won 2-0 | +171481 |
| 2sealed | 1172 | Edelson, Steve (1806) | Lost 0-2 | -121469 |
| 3sealed | 1203 | Tuinstra, Todd (1502) | Won 2-1 | +191488 |
| 4sealed | 1147 | Butler, Casey (1516) | Lost 0-2 | -181470 |
| 5sealed | 1171 | Liu, Michael (1487) | Won 2-0 | +191489 |
| 6sealed | 1113 | Biaggi, Andrea (1392) | Won 2-1 | +161505 |
| 7sealed | 1107 | Bennette, Anthony (1539) | Won 2-0 | +181523 |
| 8sealed | 1038 | Lin, Le (1599) | Lost 1-2 | -161507 |
| 9sealed | 1090 | Araujo, Spenser (1537) | Lost 1-2 | -181489 |
| top | average opponent: 1534record: 5-4 | new rating: 1489 | ||
| Pro Tour Los Angeles 1998 (Tempest block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 110 | Ladra, Lukas (1500) | Lost 0-0 | -181482 |
| 2block | 107 | Ponce, Nate (1482) | Lost 0-0 | -181464 |
| 3block | 145 | Williams, David A (1464) | Won 0-0 | +181482 |
| 4block | 103 | Guevin, Thomas (1482) | Lost 0-0 | -181464 |
| top | average opponent: 1482record: 1-3 | new rating: 1464 | ||