Jacobs, Jeffery
Current rating: 1578
Record: 16-14-3
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 124 | Provenzano, Matthew (1482) | Won 2-1 | +181496 |
| 3sealed | 290 | Avelar, Anthony (1783) | Lost 0-2 | -131483 |
| 4sealed | 226 | Brady, Zachary (1512) | Won 2-0 | +191502 |
| 5sealed | 317 | Blais, Ryan (1592) | Won 2-0 | +191521 |
| 6sealed | 113 | Selski, Benjamin (1466) | Lost 1-2 | -191502 |
| 7sealed | 176 | Bush, Jonathan (1556) | Won 2-1 | +191521 |
| 8sealed | 159 | Kane, Will (1671) | Lost 1-2 | -151506 |
| 9sealed | 284 | Polotan, Justin (1479) | Won 2-0 | +181524 |
| 10draft | 39 | Toney, Andrew (1516) | Won 2-0 | +171541 |
| 11draft | 38 | Rios, Justin (1772) | Won 0-0 | +221563 |
| 12draft | 34 | Rideout, Vincent (1712) | Lost 1-2 | -151548 |
| 13draft | 32 | Soroka, Roman (1585) | Won 2-0 | +191567 |
| 14draft | 184 | Mei, Mike Songhao (1868) | Lost 0-2 | -131554 |
| 15draft | 97 | Majlaton, Alex (1874) | Won 2-1 | +241578 |
| top | average opponent: 1634record: 9-5 | new rating: 1578 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 357 | Delliskave, Nick (1517) | Lost 0-2 | -171472 |
| 3modern | 703 | Han, Chang (1510) | Won 2-1 | +191491 |
| 4modern | 440 | Trojan, Jay (1660) | Lost 0-2 | -151476 |
| 5modern | 537 | Fajardo, Paul (1499) | Won 2-1 | +181494 |
| 6modern | 563 | Mellem, David (1602) | Lost 0-2 | -161478 |
| top | average opponent: 1558record: 2-3 | new rating: 1478 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 165 | Efigenio, Christopher (1625) | Won 2-1 | +201520 |
| 4sealed | 32 | Nguyen, Edward (1627) | Won 2-0 | +201540 |
| 5sealed | 15 | Romero, Julian (1596) | Lost 1-2 | -171523 |
| 6sealed | 156 | Kirschbaum, Adam (1538) | Lost 0-2 | -181505 |
| 7sealed | 107 | Arce, Aaron (1616) | Lost 0-2 | -161489 |
| top | average opponent: 1600record: 2-3 | new rating: 1489 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 362 | Smalley, Tyler (1500) | Lost 1-2 | -181482 |
| 2standard | 467 | Pichardo, Luis (1612) | Won 2-1 | +201502 |
| 3standard | 681 | Servantes, Lucas (1468) | Lost 0-2 | -181484 |
| 4standard | 637 | Floyd, Aaron (1521) | Won 2-0 | +181502 |
| 5standard | 551 | Sparks, David (1392) | Draw 1-1 | -21500 |
| 6standard | 498 | Chestnut, Jeremy (1498) | Draw 1-1 | 01500 |
| 7standard | 470 | Jones, Josh 2 (1499) | Draw 1-1 | 01500 |
| 8standard | 373 | Pinto, Victor (1481) | Lost 0-2 | -181482 |
| 9standard | 320 | Gray, Timothy (1470) | Won 2-0 | +181500 |
| top | average opponent: 1494record: 3-3-3 | new rating: 1500 | ||