Brinkman, John
Current rating: 1677
Record: 24-15
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1599 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 182 | Lee, William 5529 (1500) | Won 2-0 | +161615 |
| 2legacy | 56 | Lanninger, Christian (1517) | Lost 0-2 | -201595 |
| 3legacy | 399 | Longair, Ryan (1489) | Won 2-0 | +161611 |
| 4legacy | 169 | Johnson, KC (1633) | Lost 1-2 | -171594 |
| 5legacy | 331 | Meyers, David (1415) | Won 2-1 | +141608 |
| 6legacy | 158 | Aguirre, Andres (1532) | Won 2-1 | +171625 |
| 7legacy | 124 | Graves, Ashby (1381) | Won 2-0 | +141639 |
| 8legacy | 95 | Sun, James (1555) | Won 2-0 | +161655 |
| 9legacy | 39 | Clark, Mason (1731) | Lost 0-2 | -161639 |
| 10legacy | 74 | Killelea, Thomas (1599) | Won 2-1 | +171656 |
| 11legacy | 75 | Marklyn, Tyler (1750) | Won 2-1 | +201676 |
| 12legacy | 42 | Witucki, Nicholas (1597) | Won 2-1 | +161692 |
| 13legacy | 38 | Simon, Eric (1599) | Lost 0-2 | -201672 |
| 14legacy | 39 | Ziemba, Brian (1767) | Won 2-0 | +201692 |
| 15legacy | 39 | Arthurs, Marshall (1841) | Lost 0-2 | -151677 |
| top | average opponent: 1594record: 10-5 | new rating: 1677 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 55 | Greenleaf, Daniel (1545) | Lost 0-2 | -161433 |
| 2modern | 268 | Vagelakos, Alexander (1481) | Won 2-1 | +181451 |
| 3modern | 234 | Humble, James (1449) | Won 2-1 | +181469 |
| 4modern | 112 | Finamore, Timothy (1533) | Won 2-0 | +201489 |
| 5modern | 85 | Sperlunto, Ralph (1513) | Won 2-1 | +181507 |
| 6modern | 69 | Thompson, Dakota (1543) | Won 2-1 | +191526 |
| 7modern | 20 | Ross, Brendan (1521) | Won 2-1 | +181544 |
| 8modern | 32 | Mekaroun, Anousith (1613) | Won 2-0 | +191563 |
| 9modern | 6 | Johnson, Vincent (1766) | Lost 0-2 | -151548 |
| 10modern | 32 | Fischer, Shane (1638) | Won 2-0 | +201568 |
| 11modern | 21 | Terpening, Justin (1804) | Lost 0-2 | -141554 |
| 12modern | 51 | Falcone, Victor (1600) | Won 2-1 | +191573 |
| 13modern | 21 | Morson, Jacob (1614) | Won 2-1 | +191592 |
| 14modern | 16 | Orange, Gregory (1948) | Lost 0-2 | -121580 |
| 15modern | 35 | Mumby, Alexander (1621) | Won 2-0 | +191599 |
| top | average opponent: 1613record: 11-4 | new rating: 1599 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 702 | Black, Nathaniel (1500) | Won 2-0 | +181500 |
| 2modern | 128 | Lui, Wilson (1517) | Lost 1-2 | -171483 |
| 3modern | 680 | Simard, Eric (1525) | Lost 0-2 | -181465 |
| 4modern | 655 | Jackson, Gregory (1539) | Lost 1-2 | -161449 |
| top | average opponent: 1520record: 1-3 | new rating: 1449 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 613 | Asbach, John (1564) | Lost 0-2 | -171483 |
| 2sealed | 526 | Delaveau, Frederic (1498) | Won 2-1 | +181501 |
| 3sealed | 690 | Wyatt, Robert (1501) | Won 2-1 | +181519 |
| 4sealed | 614 | Gladden, James (1473) | Lost 1-2 | -181501 |
| 5sealed | 496 | Norman, Shelly (1470) | Lost 0-2 | -191482 |
| top | average opponent: 1501record: 2-3 | new rating: 1482 | ||