Castro, David
Current rating: 1492
Record: 9-10
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 95 | Collison, Jack (1500) | Won 2-1 | +191482 |
| 2sealed | 151 | Palmer, Matthew (1475) | Won 2-0 | +181500 |
| 3sealed | 56 | Jianu, Michael (1565) | Lost 1-2 | -171483 |
| 4sealed | 232 | Swyers, William (1517) | Won 2-0 | +181501 |
| 5sealed | 177 | Uthuppan, Joseph (1490) | Won 2-1 | +181519 |
| 6sealed | 69 | Rose, Eam (1600) | Lost 1-2 | -161503 |
| 7sealed | 221 | Landey, Lee (1532) | Lost 1-2 | -181485 |
| 8sealed | 234 | Turner, Cash (1894) | Won 2-1 | +251510 |
| 9sealed | 196 | Balsiger, Jake (1521) | Lost 0-2 | -181492 |
| top | average opponent: 1566record: 5-4 | new rating: 1492 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 139 | Certain, Tiger (1516) | Lost 1-2 | -171461 |
| 2standard | 491 | Schlesinger, Matt (1392) | Won 2-0 | +171478 |
| 3standard | 511 | Pounds, Willie (1674) | Lost 0-2 | -151463 |
| top | average opponent: 1527record: 1-2 | new rating: 1463 | ||
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 221 | Madej, Chet (1500) | Won 2-1 | +181516 |
| 2standard | 123 | Schulte, Michael (1380) | Lost 1-2 | -201496 |
| 3standard | 570 | Wang, Yichen [CHN] (1501) | Lost 1-2 | -181478 |
| top | average opponent: 1460record: 1-2 | new rating: 1478 | ||
| Grand Prix Denver 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 69 | Wilcox-o hearn, Bryce (1500) | Won 2-1 | +181518 |
| 2block | 73 | Williams, Michael B (1518) | Won 2-1 | +181536 |
| 3block | 32 | Six, Brian (1511) | Lost 0-2 | -181518 |
| 4block | 172 | Tran, Viet (1456) | Lost 0-2 | -201498 |
| top | average opponent: 1496record: 2-2 | new rating: 1498 | ||