Elkon, Jacob
Current rating: 1474
Record: 13-15
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 191 | Zeymo, Alexander (1500) | Won 2-0 | +181524 |
| 2sealed | 84 | Bold Wark, Lewis (1754) | Lost 0-0 | -141510 |
| 3sealed | 274 | Burkholder, Jonah (1498) | Lost 0-2 | -181492 |
| 4sealed | 454 | Yurman, Michael (1482) | Lost 1-2 | -181474 |
| top | average opponent: 1559record: 1-3 | new rating: 1474 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 552 | Johnson, Jack (1500) | Lost 1-2 | -181525 |
| 3legacy | 529 | Alane, Joseph (1500) | Lost 0-2 | -191506 |
| top | average opponent: 1500record: 0-2 | new rating: 1506 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 420 | Zembruski, Matthew A (1500) | Lost 0-2 | -191503 |
| 2sealed | 647 | Newell, George C (1482) | Won 2-1 | +181521 |
| 3sealed | 634 | Mahini, Shaw (1500) | Won 2-0 | +171538 |
| 4sealed | 492 | Carleton-Barnes, Gabriel (1661) | Won 2-1 | +211559 |
| 5sealed | 551 | Ashman, Benji (1714) | Won 2-0 | +201579 |
| 6sealed | 448 | Tharmaratnam, Samuel (1602) | Lost 0-2 | -171562 |
| 7sealed | 497 | Materewicz, Christopher (1540) | Lost 1-2 | -191543 |
| top | average opponent: 1571record: 4-3 | new rating: 1543 | ||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 19 | Thielman, Sean (1463) | Lost 1-2 | -181446 |
| 2legacy | 438 | Dormill, Gabe (1482) | Won 2-0 | +191465 |
| 3legacy | 269 | Bauer, Michael (1460) | Won 2-0 | +181483 |
| 4legacy | 202 | Williams, Phillip (1484) | Lost 0-2 | -181465 |
| 5legacy | 362 | Ferst, Taylor (1508) | Won 2-1 | +191484 |
| 6legacy | 303 | Cappel, Avery (1516) | Won 2-0 | +181502 |
| 7legacy | 193 | Drebsky, David (1577) | Lost 1-2 | -161486 |
| 8legacy | 216 | Adkins, Robert (1515) | Won 2-0 | +181504 |
| 9legacy | 136 | Platt, Cam (1475) | Won 2-0 | +181522 |
| top | average opponent: 1498record: 6-3 | new rating: 1522 | ||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 168 | Kucharczyk, Michael (1532) | Lost 1-2 | -171483 |
| 2sealed | 365 | Ng, Sherwin (1482) | Won 2-0 | +181501 |
| 3sealed | 294 | Giffen, Alexander (1482) | Lost 1-2 | -191482 |
| 4sealed | 415 | Jures, Michael C (1482) | Lost 0-2 | -181464 |
| 5sealed | 399 | Guzzo, Benedict (1467) | Won 2-0 | +181482 |
| 6sealed | 321 | Massengill, Drew (1483) | Lost 1-2 | -181464 |
| top | average opponent: 1488record: 2-4 | new rating: 1464 | ||