Koziol, Joshua
Current rating: 1380
Record: 12-22-3
| Grand Prix Hartford 2018 (modern) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 20 | Hadayia, John (1558) | Draw 1-1 | +21447 |
| 2modern | 426 | Prior Jr, Christopher (1506) | Lost 1-2 | -171430 |
| 3modern | 743 | Lee, Seong (1483) | Lost 0-2 | -171413 |
| 4modern | 817 | Grzelkowski, Stephan (1466) | Lost 0-2 | -171396 |
| 5modern | 782 | Muniz, Peter (1470) | Lost 0-2 | -161380 |
| top | average opponent: 1497record: 0-4-1 | new rating: 1380 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 147 | Maas, Jeffrey (1533) | Lost 1-2 | -151369 |
| 2standard | 479 | Timlin, Kevin (1482) | Won 2-1 | +201389 |
| 3standard | 489 | DeJohn, Chris (1455) | Draw 1-1 | +11390 |
| 4standard | 73 | Hunkapiller, Charles (1502) | Won 2-1 | +201410 |
| 5standard | 353 | Nester, Andrew (1465) | Won 2-1 | +191429 |
| 6standard | 228 | Edwards, Mitchell (1765) | Lost 1-2 | -121417 |
| 7standard | 356 | Zhang, Yuxuan (1539) | Won 2-1 | +201437 |
| 8standard | 247 | Naide, Kazutaka (1856) | Won 2-0 | +251462 |
| 9standard | 162 | Bates, Jeffrey (1524) | Lost 0-2 | -171445 |
| top | average opponent: 1569record: 5-3-1 | new rating: 1445 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 142 | Setree, Cody (1477) | Lost 1-2 | -161372 |
| 2standard | 434 | Byington, Daniel (1465) | Won 2-1 | +191391 |
| 3standard | 492 | Nesbitt, Alan (1500) | Lost 0-2 | -161375 |
| 4standard | 562 | Milewicz, Chris (1479) | Won 2-1 | +201395 |
| 5standard | 359 | Oh, Inn (1465) | Won 2-1 | +191414 |
| 6standard | 317 | Deshaies, Jacob (1504) | Lost 0-2 | -161398 |
| 7standard | 393 | Lundberg, Duncan (1613) | Lost 0-2 | -141384 |
| top | average opponent: 1500record: 3-4 | new rating: 1384 | ||
| Grand Prix Providence 2016 (KLD standard) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 293 | Reed, Lucas (1500) | Won 2-0 | +191454 |
| 2standard | 62 | Gamache, Thomas (1599) | Lost 0-2 | -151439 |
| 3standard | 363 | Choate, Elijah (1503) | Lost 1-2 | -171422 |
| 4standard | 422 | Griffin, Nicholas (1483) | Lost 0-2 | -171405 |
| 5standard | 497 | Brown, Milo (1462) | Lost 0-2 | -171388 |
| top | average opponent: 1510record: 1-4 | new rating: 1388 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 22 | Esterline, Isaac (1500) | Won 2-0 | +181502 |
| 2standard | 276 | Roper, Derrick (1624) | Lost 1-2 | -161486 |
| 3standard | 569 | Cooney, Michael (1528) | Lost 0-2 | -171469 |
| 4standard | 550 | Fello, Bobby (1534) | Lost 1-2 | -171452 |
| 5standard | 603 | Ferguson, Scott (1481) | Lost 0-2 | -171435 |
| top | average opponent: 1533record: 1-4 | new rating: 1435 | ||
| Grand Prix New York 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 123 | McDonald, Anthony (1500) | Won 2-0 | +181518 |
| 2standard | 181 | Hurtubise, Jay (1505) | Lost 0-2 | -181500 |
| 3standard | 678 | Quicano, Luis (1489) | Won 2-0 | +181518 |
| 4standard | 359 | Desmettre, Michael (1501) | Lost 0-2 | -191499 |
| 5standard | 747 | LaFreniere, John (1682) | Draw 1-1 | +41503 |
| 6standard | 614 | Liu, Alex [USA] (1461) | Lost 0-2 | -191484 |
| top | average opponent: 1523record: 2-3-1 | new rating: 1484 | ||