St. John, Justin
Current rating: 1619
Record: 15-11-1
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 243 | Woods, Jacob (1552) | Lost 0-2 | -181515 |
| 2standard | 289 | Haarman, John (1482) | Won 2-0 | +171532 |
| 3standard | 365 | Gombas, Stefan (1490) | Won 2-0 | +181550 |
| 4standard | 304 | Sarver, Cory (1445) | Won 2-1 | +161566 |
| 5standard | 89 | Kiedrowski, Dylan (1566) | Won 2-1 | +181584 |
| 6standard | 136 | Rohr, Josh (1641) | Won 2-0 | +191603 |
| 7standard | 34 | Lizzi, Adam (1717) | Won 2-0 | +201623 |
| 8standard | 17 | Micklo, Alexander (1678) | Lost 0-2 | -171606 |
| 9standard | 95 | Sifuentes, Francisco (1868) | Lost 1-2 | -131593 |
| 10standard | 152 | Ingram, Michael (1658) | Draw 1-1 | +11594 |
| 11standard | 136 | Getz, Scott (1561) | Won 2-0 | +171611 |
| 12standard | 116 | Sturm, Nate (1883) | Won 2-0 | +231634 |
| 13standard | 99 | Davis, Andrew (1789) | Lost 0-2 | -151619 |
| top | average opponent: 1641record: 8-4-1 | new rating: 1619 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 331 | Patterson, Will (1584) | Lost 0-2 | -161449 |
| 4sealed | 414 | Dugal, Louis-Philippe (1445) | Won 2-1 | +181467 |
| 5sealed | 323 | Brinkmann, Emmett (1538) | Lost 1-2 | -171450 |
| 6sealed | 591 | Proby, Randy (1459) | Won 2-0 | +181468 |
| 7sealed | 372 | Strumpf, Jonathan (1616) | Won 2-0 | +211489 |
| 8sealed | 181 | Gelazela, Joe (1526) | Won 2-0 | +191508 |
| 9sealed | 189 | Berry, Mike (1802) | Won 2-1 | +231531 |
| 10draft | 103 | Wiesenberg, Joseph (1701) | Won 2-1 | +211552 |
| 11draft | 93 | Stroev, Mikhail (1771) | Won 2-0 | +221574 |
| 12draft | 84 | Richter, Brian (1775) | Lost 1-2 | -151559 |
| 13draft | 131 | Hudak, Casey (1771) | Lost 0-2 | -141545 |
| 14draft | 203 | Tuduri, Ricard (1857) | Lost 0-2 | -121533 |
| top | average opponent: 1654record: 7-5 | new rating: 1533 | ||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 100 | Short, Jason (1518) | Lost 0-0 | -181482 |
| 3sealed | 147 | Kvecher, Leonid (1500) | Lost 0-0 | -171465 |
| top | average opponent: 1509record: 0-2 | new rating: 1465 | ||