Slaughter, Johnathan
Current rating: 1660
Record: 22-12
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1694 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 145 | Miller, Shannon (1474) | Won 2-1 | +141708 |
| 3standard | 187 | Delaney, Colton (1538) | Lost 1-2 | -211687 |
| 4standard | 154 | Cude, Nathan (1517) | Won 2-1 | +151702 |
| 5standard | 196 | Conrad, Grant (1536) | Lost 1-2 | -211681 |
| 6standard | 185 | Hassan, Justin (1518) | Lost 1-2 | -211660 |
| top | average opponent: 1517record: 2-3 | new rating: 1660 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 258 | Vargas, Thomas (1501) | Won 2-1 | +171551 |
| 2standard | 233 | Smith, Brandon (1589) | Won 2-0 | +191570 |
| 3standard | 167 | Swift, Orrin (1731) | Won 2-0 | +211591 |
| 4standard | 133 | Lancaster, Charles (1655) | Lost 1-2 | -171574 |
| 5standard | 213 | May, Taylor (1536) | Lost 1-2 | -191555 |
| 6standard | 301 | Campbell, David (1487) | Won 2-0 | +171572 |
| 7standard | 259 | Arriola, Alexis (1538) | Won 2-1 | +171589 |
| 8standard | 210 | Brewster, John (1508) | Won 2-1 | +171606 |
| 9standard | 152 | Miles, Adam (1618) | Won 2-0 | +181624 |
| 10standard | 46 | Biggers, Dustin (1601) | Won 2-0 | +171641 |
| 11standard | 13 | Little, Bruce (1609) | Won 2-1 | +181659 |
| 12standard | 11 | Maher, Mark (1728) | Won 2-1 | +191678 |
| 13standard | 8 | Burris, Christopher (1714) | Lost 1-2 | -171661 |
| 14standard | 20 | Amaro, Luis (1555) | Won 2-1 | +161677 |
| 15standard | 11 | Valle, Amadiz (1636) | Won 2-0 | +171694 |
| top | average opponent: 1600record: 12-3 | new rating: 1694 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 547 | Mcgee, Zachary A (1484) | Lost 1-2 | -191498 |
| 2extended | 597 | Heath, Jeffrey (1428) | Won 2-1 | +171515 |
| 3extended | 554 | Morelock, Chris (1465) | Won 2-1 | +171532 |
| 4extended | 582 | Best, Glenn (1601) | Lost 1-2 | -171515 |
| 5extended | 605 | Hogsett, Richard R (1465) | Won 2-1 | +171532 |
| 6extended | 560 | Drebsky, David (1631) | Won 2-0 | +201552 |
| 7extended | 511 | Desgrange, Jeremy M (1523) | Lost 0-2 | -181534 |
| top | average opponent: 1514record: 4-3 | new rating: 1534 | ||
| Grand Prix Houston 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 83 | Trahan, Jordan D (1500) | Lost 1-2 | -181482 |
| 2extended | 199 | Byrne, Mike (1482) | Won 2-1 | +181500 |
| 3extended | 146 | Temple, Joshua (1500) | Won 2-1 | +181518 |
| 4extended | 101 | Hulsey, Nathan N (1523) | Won 2-1 | +181536 |
| 5extended | 93 | Hosler, Corbin (1516) | Lost 0-2 | -181518 |
| 6extended | 148 | Benavides, Jerry (1518) | Won 2-0 | +181536 |
| 7extended | 86 | Green, Robert C (1477) | Lost 0-2 | -191517 |
| top | average opponent: 1502record: 4-3 | new rating: 1517 | ||