McCarthy, John
Current rating: 1636
Record: 26-17
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1606 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 188 | Carter, Gabrielle (1460) | Won 2-0 | +151621 |
| 2standard | 87 | Hirsh, Ben (1516) | Lost 0-2 | -201601 |
| 3standard | 475 | O'Halloran-Gannon, Patrick (1504) | Won 2-0 | +161617 |
| 4standard | 327 | Doshi, Vishvas (1750) | Won 2-1 | +211638 |
| 5standard | 94 | Lerner, Clark (1568) | Lost 0-2 | -191619 |
| 6standard | 292 | Halmagyi, Joshua (1760) | Won 2-0 | +201639 |
| 7standard | 177 | Santana, Oskar (1548) | Won 2-0 | +161655 |
| 8standard | 118 | McWhan, Conner (1565) | Lost 1-2 | -191636 |
| top | average opponent: 1584record: 5-3 | new rating: 1636 | ||
| Grand Prix Hartford 2018 (modern) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 175 | Toppa, Kai (1500) | Won 2-0 | +161601 |
| 2modern | 365 | O'Neill, Angel (1518) | Won 2-0 | +171618 |
| 3modern | 360 | DeiDolori, Michael (1804) | Won 2-1 | +211639 |
| 4modern | 143 | Robinson, Bradley (1841) | Lost 1-2 | -141625 |
| 5modern | 344 | Shukla, Neeraj (1720) | Won 2-0 | +191644 |
| 6modern | 103 | Kizis, Adam (1527) | Lost 1-2 | -201624 |
| 7modern | 251 | Betrix, Ryan (1594) | Lost 1-2 | -181606 |
| top | average opponent: 1644record: 4-3 | new rating: 1606 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 276 | Clemmer, Garrett (1615) | Won 2-0 | +181614 |
| 2legacy | 126 | Chirchirillo, Nick (1519) | Lost 1-2 | -191595 |
| 3legacy | 439 | McMicheaux, Zach (1487) | Won 2-1 | +161611 |
| 4legacy | 331 | Clark, Zac (1374) | Won 2-1 | +141625 |
| 5legacy | 177 | Jones, Brandon William (1473) | Lost 1-2 | -211604 |
| 6legacy | 306 | Chacon, Jorge (1546) | Lost 1-2 | -191585 |
| top | average opponent: 1502record: 3-3 | new rating: 1585 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1592 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 55 | Leone, Jonathan (1521) | Lost 0-2 | -201572 |
| 2legacy | 546 | Muno, Kyle (1481) | Won 2-1 | +171589 |
| 3legacy | 573 | Webster, Justin (1498) | Won 2-1 | +161605 |
| 4legacy | 560 | Kenney, Matt (1521) | Won 2-0 | +171622 |
| 5legacy | 326 | Trovato, Thomas (1489) | Lost 0-2 | -211601 |
| 6legacy | 464 | Collins, Jason (1489) | Won 2-1 | +161617 |
| 7legacy | 219 | Prajzner, Ross (1448) | Lost 1-2 | -211596 |
| top | average opponent: 1493record: 4-3 | new rating: 1596 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 273 | Joyce, Wally (1500) | Won 2-0 | +181518 |
| 2block | 67 | Ortiz, Jeremy (1482) | Won 2-1 | +171535 |
| 3block | 21 | Cruz, Tony (1536) | Lost 0-2 | -181517 |
| 4block | 288 | Napoli, Phillip (1553) | Lost 1-2 | -171500 |
| 5block | 254 | Smithers, Graeme (1500) | Won 2-0 | +181518 |
| 6block | 160 | Majlaton, Alex (1507) | Won 2-1 | +181536 |
| 7block | 179 | Cleaver, Chris (1536) | Won 2-0 | +181554 |
| 8block | 112 | Ryan, Chris (1538) | Won 2-1 | +181572 |
| 9block | 38 | Hughes, Ryan (1583) | Won 2-1 | +181590 |
| 10block | 28 | Moulton, Jesse (1581) | Won 2-1 | +181608 |
| 11block | 13 | Wallin, David (1616) | Lost 0-2 | -181590 |
| 12block | 32 | Allen, Keith (1593) | Won 2-0 | +181608 |
| 13block | 15 | Appel, Rene (1784) | Lost 1-2 | -151593 |
| 14block | 50 | Shi, Di (1573) | Won 2-1 | +181611 |
| 15block | 44 | Ceprano, Peter (1565) | Lost 0-2 | -191592 |
| top | average opponent: 1563record: 10-5 | new rating: 1592 | ||