Hirsh, Zachary
Current rating: 1455
Record: 19-22-2
| Grand Prix Richmond 2014 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 393 | Phillips, Thomas (1500) | Lost 0-2 | -171429 |
| 2modern | 470 | Goding, Chad (1482) | Lost 0-2 | -171412 |
| 3modern | 641 | Headley, David (1549) | Lost 0-2 | -161396 |
| 4modern | 686 | Harper, Connor (1446) | Won 2-0 | +191415 |
| 5modern | 578 | Todd, Dj (1465) | Won 2-0 | +191434 |
| 6modern | 460 | Snyderman, Mark (1482) | Won 2-0 | +191453 |
| 7modern | 334 | McMicheaux, Zach (1504) | Won 2-0 | +191472 |
| 8modern | 273 | Murdoch, Sean (1506) | Lost 0-2 | -171455 |
| top | average opponent: 1492record: 4-4 | new rating: 1455 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 302 | Griffin, Eric (1574) | Lost 1-2 | -171503 |
| 2legacy | 412 | Kibe, Lance H (1415) | Draw 1-1 | -21501 |
| 3legacy | 209 | Galgano, Jarrod (1482) | Lost 1-2 | -181483 |
| 4legacy | 771 | SWARTOUT, ZAC (1464) | Won 2-0 | +181501 |
| 5legacy | 674 | Ulsch, Tyler (1505) | Lost 0-2 | -181483 |
| 6legacy | 644 | Castillo, Cesar (1446) | Lost 1-2 | -191464 |
| 7legacy | 559 | Corrado, Cameron (1463) | Lost 0-2 | -181446 |
| top | average opponent: 1478record: 1-5-1 | new rating: 1446 | ||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Oliver, Jeremy (1469) | Lost 0-2 | -191523 |
| 2sealed | 572 | Joseph C., (1483) | Won 2-0 | +171540 |
| 3sealed | 553 | Pelley, Brandon (1502) | Lost 1-2 | -191521 |
| 4sealed | 594 | Wegman, Elliot (1482) | Won 2-0 | +171538 |
| 5sealed | 434 | Carson, Jared (1506) | Lost 1-2 | -181520 |
| top | average opponent: 1488record: 2-3 | new rating: 1520 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 27 | Pangnathip, Souksavanh (1500) | Won 2-1 | +181526 |
| 3standard | 176 | Hopkins, Michael (1554) | Lost 1-2 | -171509 |
| 4standard | 345 | Lubman, Jacob (1486) | Lost 1-2 | -191490 |
| 5standard | 411 | Wickersham, Ray A (1504) | Won 2-1 | +181508 |
| 6standard | 300 | Labutka, Adam (1509) | Won 2-1 | +181526 |
| 7standard | 274 | Frank, Harry (1369) | Lost 0-2 | -201506 |
| 8standard | 316 | Herstead, Nicholas (1537) | Won 2-1 | +181524 |
| 9standard | 201 | Spano, Chad R (1517) | Won 2-1 | +181542 |
| top | average opponent: 1497record: 5-3 | new rating: 1542 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 346 | Enokian, Anthony (1551) | Lost 1-2 | -161429 |
| 2standard | 390 | Williams, Patrick L (1486) | Won 2-1 | +191448 |
| 3standard | 353 | Beougher, Paul (1500) | Won 2-0 | +191467 |
| 4standard | 400 | Stokes, Tyler (1484) | Lost 1-2 | -181449 |
| 5standard | 401 | Rodgers, Rachel (1499) | Won 2-1 | +191468 |
| 6standard | 405 | Sacco, Daniel (1414) | Won 2-1 | +171485 |
| 7standard | 205 | Senneway, Bill (1732) | Won 2-1 | +231508 |
| 8standard | 136 | Stephens, Jonathan R (1540) | Lost 1-2 | -181490 |
| 9standard | 168 | Henkes, Ben (1492) | Won 2-0 | +181508 |
| top | average opponent: 1522record: 6-3 | new rating: 1508 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 684 | Richards, David (1500) | Won 2-1 | +181518 |
| 2standard | 791 | Glass, Michael (1518) | Lost 1-2 | -181500 |
| 3standard | 879 | Doyle, Troy D (1500) | Draw 1-1 | 01500 |
| 4standard | 885 | Barnes, Thomas (1500) | Lost 0-2 | -181482 |
| 5standard | 944 | Iramain, Jorge (1400) | Lost 0-2 | -191463 |
| 6standard | 912 | Aquino, Marc (1486) | Lost 0-2 | -181445 |
| top | average opponent: 1484record: 1-4-1 | new rating: 1445 | ||