Collison, David
Current rating: 1441
Record: 6-11-1
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 166 | Kraft, Seth (1816) | Won 2-0 | +241471 |
| 2sealed | 61 | Baker, Justin (1715) | Lost 0-0 | -141457 |
| 3sealed | 381 | Pettie, James (1490) | Draw 1-1 | +11458 |
| 4sealed | 372 | Harris, Thomas (1458) | Lost 0-2 | -181440 |
| 5sealed | 413 | Conner, Chris (1429) | Won 2-0 | +181458 |
| 6sealed | 328 | Marcellana, Ian (1507) | Lost 1-2 | -171441 |
| top | average opponent: 1569record: 2-3-1 | new rating: 1441 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Vasi, Mark (1436) | Lost 1-2 | -201482 |
| 2sealed | 650 | Bowden, Steve (1492) | Lost 1-2 | -171465 |
| 3sealed | 751 | Wilson, Jayden (1466) | Lost 0-2 | -181447 |
| top | average opponent: 1465record: 0-3 | new rating: 1447 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Jew, Brian (1643) | Won 2-0 | +211521 |
| 2sealed | 142 | Kendall, John (1525) | Won 2-1 | +181539 |
| 3sealed | 40 | Obejas, Ammi (1758) | Lost 0-2 | -141525 |
| 4sealed | 157 | Rianhard, Cain (1773) | Lost 0-2 | -141511 |
| 5sealed | 329 | Davila, David (1627) | Lost 1-2 | -161495 |
| 6sealed | 412 | Fattu, David (1486) | Won 2-0 | +181513 |
| 7sealed | 292 | Clarke, Collin (1546) | Won 2-1 | +191532 |
| 8sealed | 253 | Walterman, Austin (1735) | Lost 0-2 | -151517 |
| 9sealed | 282 | Weber, Cody (1646) | Lost 0-2 | -151502 |
| top | average opponent: 1638record: 4-5 | new rating: 1502 | ||