Lumsden, Ronald
Current rating: 1383
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 259 | Hopkins, Khael (1489) | Lost 0-2 | -171436 |
| 2standard | 302 | Csapo, Sammy (1484) | Lost 1-2 | -181418 |
| 3standard | 532 | Ricks, Gabriel (1465) | Lost 0-2 | -171401 |
| 4standard | 558 | Enns, Galen (1411) | Lost 0-2 | -181383 |
| top | average opponent: 1462record: 0-4 | new rating: 1383 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 103 | Barkley, Shane (1542) | Won 2-1 | +191482 |
| 2standard | 149 | Muller, Kalen (1487) | Won 2-0 | +181500 |
| 3standard | 302 | Sloan, Shawn (1824) | Lost 0-2 | -121488 |
| 4standard | 223 | McClelon III, Robert (1503) | Lost 0-2 | -181470 |
| 5standard | 539 | Salinas, Seth (1501) | Lost 0-0 | -171453 |
| top | average opponent: 1571record: 2-3 | new rating: 1453 | ||
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 386 | Scheffler, Robert (1446) | Won 2-0 | +171517 |
| 2standard | 323 | Brunker, Chris (1483) | Lost 0-2 | -191498 |
| 3standard | 411 | Bowden, Curt (1482) | Lost 1-2 | -181480 |
| 4standard | 584 | Adams, Tommy (1520) | Lost 0-2 | -171463 |
| top | average opponent: 1483record: 1-3 | new rating: 1463 | ||