Darnaby, Jon
Current rating: 1520
Record: 14-13
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 126 | Wendorf, Peyton (1500) | Won 2-0 | +181494 |
| 2sealed | 4 | Tobin, David (1573) | Won 2-0 | +201514 |
| 3sealed | 168 | Ruckman, Dustin (1537) | Lost 1-2 | -181496 |
| 4sealed | 307 | Rand, Chris (1492) | Won 2-0 | +181514 |
| 5sealed | 232 | Wang, Kevin (1501) | Won 2-1 | +181532 |
| 6sealed | 79 | Hardwick, Richard (1766) | Won 2-0 | +221554 |
| 7sealed | 50 | Ma, Yuchen (1557) | Lost 1-2 | -181536 |
| 8sealed | 159 | Skallerup, Josiah (1653) | Lost 1-2 | -161520 |
| top | average opponent: 1572record: 5-3 | new rating: 1520 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1237 | Austodillo, Edgar (1515) | Lost 1-2 | -171476 |
| 2sealed | 1195 | Cabacungan, Ian (1483) | Won 2-0 | +181494 |
| 3sealed | 1195 | Liu, Michael (1487) | Lost 0-2 | -181476 |
| 4sealed | 1281 | Navarro, Denise (1482) | Won 2-0 | +181494 |
| 5sealed | 1176 | Bai, Huaxing (1490) | Lost 1-2 | -181476 |
| top | average opponent: 1491record: 2-3 | new rating: 1476 | ||
| Grand Prix Seattle 2005 (extended) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 112 | Jordan, G Mark (1500) | Won 2-0 | +171570 |
| 2extended | 59 | Brown, Tim (1543) | Lost 0-2 | -181552 |
| 3extended | 137 | Reasoner, Eric (1569) | Lost 0-2 | -181534 |
| 4extended | 162 | Bartolomei, Iain (1434) | Won 2-0 | +161550 |
| 5extended | 136 | Atkinson, Dallin (1500) | Lost 1-2 | -191531 |
| 6extended | 123 | Marr, Mat (1465) | Lost 0-2 | -191512 |
| 7extended | 118 | Sena, James (1464) | Lost 1-2 | -191493 |
| top | average opponent: 1496record: 2-5 | new rating: 1493 | ||
| Grand Prix Seattle 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 41 | Insco, Chris (1500) | Won 0-0 | +181518 |
| 2extended | 45 | Frackowiak, Sean (1470) | Lost 0-0 | -191499 |
| 3extended | 54 | Anderson, Alex (1504) | Lost 0-0 | -181481 |
| 4extended | 121 | Husted, Myke (1483) | Won 0-0 | +181499 |
| 5extended | 98 | Mills, Jessie (1500) | Won 0-0 | +181517 |
| 6extended | 54 | Aszman, Greg (1517) | Won 0-0 | +181535 |
| 7extended | 58 | Page, Eli (1535) | Won 0-0 | +181553 |
| top | average opponent: 1501record: 5-2 | new rating: 1553 | ||