Marin, Joshua
Current rating: 1529
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Downing, Ian (1558) | Won 2-1 | +201483 |
| 2sealed | 113 | Walker, Pierce (1517) | Won 2-1 | +191502 |
| 3sealed | 66 | Shew, Parker (1501) | Won 2-1 | +181520 |
| 4sealed | 210 | Linabury, Simon (1566) | Won 2-1 | +191539 |
| 5sealed | 5 | Nagy, Stephen (1693) | Lost 0-2 | -161523 |
| 6sealed | 80 | Lee, Robert 724 (1670) | Won 2-1 | +211544 |
| 7sealed | 94 | Mines, David (1989) | Lost 1-2 | -101534 |
| 8sealed | 102 | Carey, Bryan (1581) | Won 2-1 | +191553 |
| 9sealed | 109 | Babcock, Grant (1636) | Won 2-1 | +191572 |
| 10draft | 734 | Nall, Eric (1817) | Lost 0-2 | -141558 |
| 11draft | 756 | Resnick, Matthew (1565) | Lost 0-2 | -171541 |
| 12draft | 676 | Metsa, Roope (1673) | Lost 1-2 | -161525 |
| 13draft | 794 | Wong, Daniel (1732) | Lost 0-2 | -141511 |
| 15draft | 745 | Centrella, Anthony (1522) | Won 2-0 | +181529 |
| top | average opponent: 1644record: 8-6 | new rating: 1529 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 840 | Bencuya, David (1483) | Lost 0-2 | -181464 |
| 2sealed | 994 | Pang, Justine (1482) | Won 2-0 | +181482 |
| 3sealed | 1139 | Greenleaf, Joshua (1501) | Lost 1-2 | -181464 |
| 4sealed | 565 | Rangitsch, Darian (1409) | Won 2-0 | +171481 |
| 5sealed | 915 | Sutliff, Casey (1485) | Lost 1-2 | -181463 |
| top | average opponent: 1472record: 2-3 | new rating: 1463 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 517 | Himmelsbach, Markus (1526) | Lost 0-2 | -181482 |
| 2sealed | 61 | Kilian, Micah (1474) | Lost 0-2 | -181464 |
| 3sealed | 854 | Lee, Jason (1395) | Won 2-0 | +171481 |
| 4sealed | 772 | Queen, Josh (1584) | Won 2-0 | +201501 |
| 5sealed | 583 | Langley, Christopher (1432) | Lost 1-2 | -191482 |
| top | average opponent: 1482record: 2-3 | new rating: 1482 | ||