Gatza, John
Current rating: 1565
Record: 28-29
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1602 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 824 | Freas, Gerald (1601) | Lost 1-2 | -181584 |
| 3legacy | 1033 | Jonassen, Kristoffer (1557) | Lost 0-2 | -191565 |
| top | average opponent: 1579record: 0-2 | new rating: 1565 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 308 | Casey, Shawn (1387) | Won 2-0 | +161496 |
| 4legacy | 70 | Ziemba, Brian (1716) | Lost 0-2 | -141482 |
| 5legacy | 264 | Kim, Jason (1578) | Won 2-1 | +201502 |
| 6legacy | 131 | Ramirez, Gabriel (1602) | Won 2-1 | +201522 |
| 7legacy | 157 | Sturm, Nate (1603) | Won 2-1 | +191541 |
| 8legacy | 91 | Anctil, Kevin (1710) | Won 2-0 | +211562 |
| 9legacy | 18 | Pogue, James (1722) | Won 2-1 | +211583 |
| 10legacy | 8 | Jansen, Adam (1959) | Won 2-0 | +251608 |
| 11legacy | 6 | Shenhar, Shahar (1972) | Lost 1-2 | -121596 |
| 12legacy | 33 | Fehon, Garrett (1578) | Lost 0-2 | -181578 |
| 13legacy | 60 | Allen, Stephen (1598) | Won 2-1 | +181596 |
| 14legacy | 47 | Braverman, Michael (1847) | Won 2-0 | +231619 |
| 15legacy | 21 | Donegan, Dylan (1691) | Lost 1-2 | -171602 |
| top | average opponent: 1690record: 9-4 | new rating: 1602 | ||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1047 | Beasley, Jess (1500) | Won 2-1 | +191457 |
| 2sealed | 937 | Richardson, John (1436) | Won 2-0 | +181475 |
| 3sealed | 710 | McCord, Kristopher (1535) | Won 2-1 | +191494 |
| 4sealed | 706 | Yatsenko, Alex (1639) | Won 2-1 | +211515 |
| 5sealed | 704 | Murray, Scott (1546) | Lost 1-2 | -181497 |
| 6sealed | 769 | Peel, Eric (1533) | Lost 0-2 | -171480 |
| top | average opponent: 1531record: 4-2 | new rating: 1480 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 283 | Fitzgerald, Aidan (1445) | Lost 1-2 | -191456 |
| 2standard | 507 | Pollinger, Evan (1447) | Lost 1-2 | -181438 |
| top | average opponent: 1446record: 0-2 | new rating: 1438 | ||
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 182 | Blakeley, Gregory (1433) | Won 2-0 | +171474 |
| 3legacy | 152 | Adams, Joshua H (1837) | Won 2-1 | +251499 |
| 4legacy | 46 | Frazier, Matthew (1728) | Lost 0-2 | -141485 |
| 5legacy | 145 | Gleicher, David (1831) | Won 2-1 | +241509 |
| 6legacy | 144 | Lynch, Jeffrey T (1707) | Lost 1-2 | -151494 |
| 7legacy | 222 | Luster, Patrick (1400) | Won 2-1 | +171511 |
| 8legacy | 109 | George G., (1520) | Lost 0-2 | -181493 |
| 9legacy | 198 | Wooland, Chris (1503) | Lost 0-2 | -181475 |
| top | average opponent: 1620record: 4-4 | new rating: 1475 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 192 | Duncan, Kyle A (1604) | Lost 0-2 | -161474 |
| 4standard | 239 | Wofford, Chris (1517) | Lost 1-2 | -171457 |
| top | average opponent: 1560record: 0-2 | new rating: 1457 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 421 | Himes, Chad (1520) | Won 2-1 | +181506 |
| 5legacy | 429 | Hsu, James (1523) | Lost 0-2 | -171489 |
| 6legacy | 478 | M., Chris (1523) | Won 2-0 | +181507 |
| 7legacy | 423 | King, Byron (1563) | Won 2-0 | +191526 |
| 8legacy | 418 | Carpentier, Keith W (1588) | Won 2-0 | +191545 |
| 9legacy | 407 | Baboussis, George (1606) | Lost 1-2 | -171528 |
| 10legacy | 54 | Ravitz, Joshua (1840) | Lost 1-2 | -121516 |
| 11legacy | 68 | Wilhelmi, Josh (1565) | Won 2-0 | +191535 |
| 12legacy | 57 | Castellon, Michael A (1512) | Lost 0-2 | -191516 |
| 13legacy | 58 | Spagnolo, Nicholas (1750) | Lost 0-2 | -131503 |
| 14legacy | 63 | Kolos, John (1791) | Lost 0-2 | -131490 |
| top | average opponent: 1616record: 5-6 | new rating: 1490 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 13 | Schwebach, Michael (1572) | Lost 1-2 | -161448 |
| 2legacy | 195 | Dye, Brandon (1482) | Won 2-0 | +181466 |
| 3legacy | 208 | Rye, Frank W (1500) | Won 2-1 | +191485 |
| 4legacy | 97 | Sturckler, Andrew (1518) | Won 2-1 | +191504 |
| 5legacy | 88 | Feigley, Brian (1599) | Won 2-0 | +191523 |
| 6legacy | 83 | Marion, Pascal (1557) | Lost 0-2 | -171506 |
| 7legacy | 107 | Thielman, Sean (1571) | Lost 0-2 | -171489 |
| 8legacy | 110 | Nordstrom, Erik (1417) | Won 2-1 | +171506 |
| 9legacy | 70 | Witherell, Randal (1504) | Lost 1-2 | -181488 |
| top | average opponent: 1525record: 5-4 | new rating: 1488 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 226 | Ricigliano, Joseph (1483) | Lost 0-2 | -181482 |
| 2standard | 383 | Gilliam, Jeremy A (1482) | Lost 0-2 | -181464 |
| 3standard | 396 | Breier, Benjamin (1463) | Won 2-0 | +181482 |
| 4standard | 320 | Woods, Ryan (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1478record: 1-3 | new rating: 1464 | ||