Colburn, Samuel
Current rating: 1516
| Grand Prix Oakland 2019 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 191 | Wan, Brian (1445) | Won 2-0 | +181499 |
| 2modern | 84 | Pham, Matthew (1630) | Won 2-0 | +201519 |
| 3modern | 150 | Jen, Ivan (1721) | Won 2-0 | +221541 |
| 4modern | 32 | Martinez, Steven (1603) | Won 2-1 | +191560 |
| 5modern | 53 | Colley, Urchin (1545) | Lost 0-2 | -181542 |
| 6modern | 81 | Carleton-Barnes, Gabriel (1826) | Lost 0-2 | -131529 |
| 7modern | 173 | Campusano, Eric (1687) | Won 2-0 | +211550 |
| 8modern | 140 | Frank, Benjamin (1610) | Won 2-1 | +191569 |
| 9modern | 57 | Lowry, Broderick (1545) | Lost 1-2 | -191550 |
| 10modern | 101 | Mason, Greg (1644) | Lost 1-2 | -161534 |
| 11modern | 95 | Bowman, Jd (1549) | Lost 1-2 | -181516 |
| top | average opponent: 1619record: 6-5 | new rating: 1516 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 272 | Danker, Jason (1500) | Lost 0-2 | -181480 |
| 2sealed | 479 | Lamping, William (1720) | Won 2-0 | +221502 |
| 3sealed | 430 | Anderson, Kevin (1506) | Lost 1-2 | -181484 |
| 4sealed | 532 | Brooks, Dan (1485) | Won 2-0 | +181502 |
| 5sealed | 463 | Castro, Angel (1344) | Lost 0-2 | -211481 |
| top | average opponent: 1511record: 2-3 | new rating: 1481 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 87 | Landon, Gregory (1500) | Won 2-0 | +181518 |
| 2standard | 157 | Gardiner, Grant (1505) | Draw 1-1 | 01518 |
| 3standard | 408 | Calderon, Alejandro (1434) | Lost 0-2 | -201498 |
| 4standard | 584 | Jones, Hunter (1500) | Won 2-1 | +181516 |
| 5standard | 415 | Fukumoto, Brady (1518) | Lost 0-2 | -181498 |
| 6standard | 569 | Palmer, James (1475) | Won 2-0 | +181516 |
| 7standard | 388 | Linke, Ian (1520) | Lost 0-2 | -181498 |
| top | average opponent: 1493record: 3-3-1 | new rating: 1498 | ||