Lashock, David C
Current rating: 1551
Record: 9-6
| Grand Prix Columbus 2012 (modern) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 240 | Schibanoff, Justin (1524) | Won 2-1 | +191518 |
| 2modern | 160 | Ruarke, Justin (1518) | Won 2-0 | +181536 |
| 3modern | 91 | Kuczynski, Larry (1563) | Won 2-1 | +181554 |
| 4modern | 86 | Jones, Trent (1714) | Lost 0-2 | -151539 |
| 5modern | 250 | Bunnell, Scott (1469) | Lost 0-2 | -191520 |
| 6modern | 292 | Robinson, Jon T (1501) | Won 2-1 | +171537 |
| 7modern | 191 | Wirtz, Josh (1472) | Won 2-0 | +171554 |
| 8modern | 69 | Webb, Jody (1466) | Won 2-0 | +171571 |
| 9modern | 57 | Tomitz, Michael (1506) | Lost 0-2 | -201551 |
| average opponent: 1526record: 6-3 | new rating: 1551 | |||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 448 | St. Amour, Nicholas (1500) | Won 2-0 | +181518 |
| 2legacy | 427 | Gooch, Chris (1517) | Won 2-1 | +181536 |
| 3legacy | 438 | Ruggiero, Scott A (1443) | Won 2-1 | +161552 |
| 4legacy | 458 | Ryan, Forrest (1626) | Lost 1-2 | -161536 |
| 5legacy | 516 | Koie, Kayvan (1510) | Lost 0-2 | -191517 |
| 6legacy | 530 | Le, Dan H (1520) | Lost 1-2 | -181499 |
| average opponent: 1519record: 3-3 | new rating: 1499 | |||