DaCosta, Yvonne
Current rating: 1497
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 264 | Gonzalez, Rafael (1429) | Won 2-0 | +171510 |
| 2sealed | 246 | Crouson, Travis (1516) | Won 2-1 | +181528 |
| 3sealed | 33 | Cheng, Wei (1672) | Lost 0-2 | -151513 |
| 4sealed | 224 | Calvert, Chase (1483) | Won 2-1 | +171530 |
| 5sealed | 245 | Park, Jong Sun (1719) | Lost 0-2 | -151515 |
| 6sealed | 347 | Dacus, Jonathan (1514) | Lost 1-2 | -181497 |
| top | average opponent: 1556record: 3-3 | new rating: 1497 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 370 | Verdoorn, Andrew (1500) | Won 2-0 | +191500 |
| 2standard | 299 | Pruden, Alyssa (1517) | Won 2-0 | +181518 |
| 3standard | 196 | Garner, Zachary (1534) | Won 2-1 | +181536 |
| 4standard | 106 | Greenwell-Baker, Dustyn (1497) | Won 2-1 | +171553 |
| 5standard | 23 | Colker, Nathan (1900) | Lost 0-2 | -111542 |
| 6standard | 46 | Sinclair, Brett (1834) | Lost 1-2 | -131529 |
| 7standard | 293 | Strueb, Devon (1536) | Lost 1-2 | -181511 |
| 8standard | 244 | Smith, Paige 2 (1519) | Lost 0-2 | -181493 |
| top | average opponent: 1605record: 4-4 | new rating: 1493 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Oliver, Eric (1500) | Won 1-0 | +181518 |
| 2sealed | 77 | Castro, Christian (1520) | Lost 0-2 | -181500 |
| 3sealed | 410 | Undercoffer, Bryan (1501) | Lost 1-2 | -181482 |
| 4sealed | 425 | Schulman, Daniel (1486) | Lost 0-2 | -181464 |
| 5sealed | 408 | Greenberg-Woo, Susan (1464) | Won 2-0 | +181482 |
| 6sealed | 331 | Way, Eric (1485) | Lost 1-2 | -181464 |
| 7sealed | 276 | Conchu, Boomer (1465) | Won 2-1 | +181482 |
| 8sealed | 200 | Lao, Jeddy (1430) | Lost 0-2 | -191463 |
| 9sealed | 181 | Akright, Trevor (1463) | Won 2-0 | +181481 |
| top | average opponent: 1479record: 4-5 | new rating: 1481 | ||