Houder, John
Current rating: 1351
Record: 8-19-1
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1372 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 125 | Courtois, Andre (1500) | Won 2-1 | +201392 |
| 2modern | 89 | Green, Jesse (1519) | Won 2-0 | +201412 |
| 3modern | 118 | Neighbours, Camron (1518) | Lost 0-2 | -161396 |
| 4modern | 126 | Chandler, Charles (1572) | Lost 0-2 | -151381 |
| 5modern | 239 | Falcon, Roberto (1500) | Lost 0-2 | -151366 |
| 6modern | 308 | Newby, John (1549) | Lost 1-2 | -151351 |
| top | average opponent: 1526record: 2-4 | new rating: 1351 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1357 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 328 | Olsen, Christopher (1512) | Lost 0-2 | -151342 |
| 2standard | 528 | Brown, Terrell (1487) | Won 2-0 | +211363 |
| 3standard | 633 | Lucas, Christopher (1401) | Won 2-1 | +191382 |
| 4standard | 355 | Pendleton, Derek (1478) | Lost 1-2 | -171365 |
| 5standard | 418 | Casey, James (1452) | Lost 0-2 | -161349 |
| 6standard | 592 | Kindberg, Lance (1389) | Won 2-1 | +191368 |
| 7standard | 430 | Lape, Brian (1498) | Won 2-0 | +201388 |
| 8standard | 399 | Bates, Chris (1475) | Lost 1-2 | -161372 |
| top | average opponent: 1461record: 4-4 | new rating: 1372 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 875 | Myers, Carter (1482) | Lost 0-2 | -161394 |
| 2sealed | 913 | Livingston, Denise (1173) | Draw 1-1 | -41390 |
| 3sealed | 1066 | Perez Molinary, Joel (1481) | Lost 0-2 | -171373 |
| 4sealed | 1116 | Lambdin, Sean (1485) | Lost 0-2 | -161357 |
| top | average opponent: 1405record: 0-3-1 | new rating: 1357 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 721 | Hoag, Brandon (1500) | Lost 1-2 | -161419 |
| 2sealed | 650 | Alexander, Susan (1482) | Won 2-0 | +191438 |
| 3sealed | 537 | Solorzano, Michaelle (1601) | Lost 0-2 | -151423 |
| 4sealed | 795 | Lorren, Phillip (1754) | Lost 1-2 | -131410 |
| top | average opponent: 1584record: 1-3 | new rating: 1410 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 395 | Wohlsdorf, Matt (1553) | Lost 1-2 | -161447 |
| 2standard | 447 | Davis, Nathaniel Q (1482) | Won 2-0 | +181465 |
| 3standard | 435 | Jarvinen, Jeffrey (1742) | Lost 0-2 | -131452 |
| 4standard | 484 | Morgan, Trevyn (1516) | Lost 1-2 | -171435 |
| top | average opponent: 1573record: 1-3 | new rating: 1435 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 217 | Reigle, Henry (1443) | Lost 0-2 | -191481 |
| 2sealed | 442 | Cross, Jim (1482) | Lost 0-2 | -181463 |
| top | average opponent: 1463record: 0-2 | new rating: 1463 | ||