Hartwell, David
Current rating: 1492
Record: 16-17-1
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 468 | Pederson, Derick (1586) | Lost 1-2 | -171530 |
| 2standard | 464 | Iversen, Phil (1481) | Lost 1-2 | -191511 |
| 3standard | 741 | Shadix, Mark (1463) | Lost 0-2 | -191492 |
| top | average opponent: 1510record: 0-3 | new rating: 1492 | ||
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 399 | Herold, Chris (1455) | Won 2-1 | +171549 |
| 2sealed | 428 | Qu, Brendon (1617) | Lost 0-2 | -171532 |
| 3sealed | 498 | Findlay, Morgan (1448) | Won 0-0 | +171549 |
| 4sealed | 270 | Levchak, Tavis (1525) | Won 2-0 | +171566 |
| 5sealed | 188 | Duarte, Steven (1619) | Lost 1-2 | -171549 |
| 6sealed | 466 | Ritter, Jacob (1521) | Lost 0-2 | -181531 |
| 7sealed | 433 | Li, Richard (1439) | Won 2-0 | +161547 |
| 8sealed | 284 | Roberts, Jacob (1694) | Won 2-1 | +211568 |
| 9sealed | 294 | Jack, Dylan (1436) | Lost 1-2 | -211547 |
| top | average opponent: 1528record: 5-4 | new rating: 1547 | ||
| Grand Prix Shanghai 2015 (DTK standard) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 18 | Peng, Tianjian (1500) | Won 2-1 | +181515 |
| 2standard | 49 | Liu, Enyang (1451) | Won 0-0 | +171532 |
| 3standard | 41 | Tada, Mitsuhiro (1564) | Lost 0-2 | -171515 |
| 4standard | 168 | White, David (1558) | Won 2-1 | +191534 |
| 5standard | 205 | Du, Wei (1528) | Draw 1-1 | -11533 |
| 6standard | 139 | Yu, Libang (1494) | Won 2-1 | +181551 |
| 7standard | 91 | Zhu, Ze (1482) | Lost 1-2 | -191532 |
| 8standard | 155 | Jin, Yi Kai (1615) | Lost 1-2 | -171515 |
| 9standard | 191 | Jiang, Junping (1485) | Won 2-1 | +171532 |
| top | average opponent: 1520record: 5-3-1 | new rating: 1532 | ||
| Grand Prix Vancouver 2014 (THS standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 210 | Bian, Andrew (1448) | Won 2-0 | +181465 |
| 2standard | 143 | Davidson-Odowichuk, Br (1518) | Won 2-0 | +191484 |
| 3standard | 20 | Drake-Heaton, Geoffrey (1559) | Won 2-1 | +201504 |
| 4standard | 44 | Winter, Raven (1462) | Won 2-0 | +171521 |
| 5standard | 14 | Pordes, Casey (1558) | Lost 0-2 | -171504 |
| 6standard | 79 | Chassie, Claude (1529) | Won 2-0 | +181522 |
| 7standard | 45 | Ogreenc, Greg (1896) | Lost 0-2 | -111511 |
| 8standard | 132 | Miller, Colin (1774) | Lost 1-2 | -141497 |
| top | average opponent: 1593record: 5-3 | new rating: 1497 | ||
| Grand Prix Calgary 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 110 | Cronshaw, Drew (1500) | Lost 0-2 | -181482 |
| 3standard | 123 | La Forest, Adam (1475) | Lost 1-2 | -181464 |
| 4standard | 276 | Burley, Brian A (1483) | Lost 0-2 | -181446 |
| 5standard | 245 | Anderson, Derek J (1498) | Lost 1-2 | -171429 |
| 6standard | 215 | Daines, Jeffery (1445) | Won 2-1 | +181447 |
| top | average opponent: 1480record: 1-4 | new rating: 1447 | ||