Williams, Jacob D
Current rating: 1449
Record: 10-13
| Grand Prix Richmond 2014 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 197 | Drinkert, Samuel (1500) | Won 2-0 | +181501 |
| 2modern | 51 | Kong, Charles (1518) | Lost 0-2 | -171484 |
| 3modern | 297 | Howley, Luke (1510) | Won 2-1 | +181502 |
| 4modern | 220 | Brown, Mark (1420) | Lost 1-2 | -191483 |
| 5modern | 337 | Solorzano, Michaelle (1585) | Lost 0-2 | -161467 |
| 6modern | 345 | Chenglin, Yiping (1510) | Lost 0-2 | -181449 |
| top | average opponent: 1507record: 2-4 | new rating: 1449 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 68 | Meredith, Jason (1447) | Won 1-0 | +171498 |
| 2legacy | 353 | Place, Eric (1517) | Won 1-0 | +191517 |
| 3legacy | 104 | Stiteler, Larry (1475) | Won 2-0 | +171534 |
| 4legacy | 196 | Herr, Joshua (1704) | Lost 1-2 | -151519 |
| 5legacy | 573 | Wohlmacher, James (1572) | Lost 0-2 | -171502 |
| 6legacy | 508 | Peralta, Gonzalo (1454) | Lost 0-2 | -191483 |
| top | average opponent: 1528record: 3-3 | new rating: 1483 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 208 | McMurry, Christopher (1518) | Lost 1-2 | -181519 |
| 3standard | 589 | Hastings, Stephen (1496) | Lost 0-2 | -191500 |
| 4standard | 700 | Harry, Nick (1430) | Lost 0-2 | -191481 |
| top | average opponent: 1481record: 0-3 | new rating: 1481 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 857 | Donovan, David (1500) | Won 2-0 | +181518 |
| 2standard | 732 | Avetisian, Tigran (1464) | Lost 1-2 | -191499 |
| 3standard | 784 | Tourloukis, Chris (1499) | Won 2-1 | +181517 |
| 4standard | 756 | Gelrud, Denis A (1522) | Won 2-1 | +181535 |
| 5standard | 720 | Marple, George (1518) | Lost 1-2 | -181517 |
| 6standard | 759 | Dixon, Josh (1517) | Won 2-0 | +181535 |
| 7standard | 760 | McDonough, Anthony (1544) | Won 2-0 | +181553 |
| 8standard | 680 | Picard, Pete (1671) | Lost 1-2 | -161537 |
| top | average opponent: 1529record: 5-3 | new rating: 1537 | ||