Ellis, Jack
Current rating: 1461
| Grand Prix Portland 2013 (modern) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 203 | Ossiff, Michael (1591) | Lost 1-2 | -161437 |
| 2modern | 260 | Jeffers, Zachary L (1502) | Won 2-0 | +201457 |
| 3modern | 183 | Graham, David (1499) | Won 2-0 | +181475 |
| 4modern | 257 | Broadstone, Benjamin (1521) | Won 2-1 | +191494 |
| 5modern | 150 | Falk, Coleman (1504) | Lost 1-2 | -181476 |
| 6modern | 164 | Duterte, Daniel (1637) | Lost 1-2 | -151461 |
| top | average opponent: 1542record: 3-3 | new rating: 1461 | ||
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 56 | Langendorf, Cole (1500) | Won 2-1 | +191447 |
| 2standard | 239 | Felker, Daniel (1518) | Lost 1-2 | -161431 |
| 3standard | 318 | Newman, Taylor (1534) | Lost 0-2 | -171414 |
| 4standard | 439 | Kuipers, Shay (1482) | Won 2-0 | +201434 |
| 5standard | 282 | Cenci, Matthew (1502) | Won 2-1 | +191453 |
| top | average opponent: 1507record: 3-2 | new rating: 1453 | ||
| Grand Prix Oakland 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 19 | Hart, Ryan (1500) | Lost 1-2 | -181482 |
| 2extended | 259 | Robinson, Billy D (1495) | Lost 1-2 | -181464 |
| 3extended | 283 | Martin, Michael (1445) | Draw 1-1 | 01464 |
| 4extended | 347 | Morgan, Isadore (1467) | Lost 1-2 | -181446 |
| 5extended | 323 | Brady, Ben (1446) | Lost 0-2 | -181428 |
| top | average opponent: 1471record: 0-4-1 | new rating: 1428 | ||