Grillo, Santo
Current rating: 1489
Record: 9-10
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 383 | Atchison, Taylor (1848) | Won 2-1 | +251502 |
| 2standard | 259 | Woodson, Jeremy (1517) | Won 2-0 | +181520 |
| 3standard | 230 | True, Samuel (1591) | Lost 0-2 | -171503 |
| 4standard | 482 | Barragan, Alfredo (1469) | Won 2-1 | +181521 |
| 5standard | 339 | Rick, David (1396) | Won 2-0 | +151536 |
| 6standard | 74 | Helbig, Drew (1912) | Lost 1-2 | -111525 |
| 7standard | 313 | Hoffmann, Matthew (1617) | Lost 1-2 | -161509 |
| 8standard | 319 | Karmiche, Dominick (1445) | Lost 0-2 | -201489 |
| top | average opponent: 1599record: 4-4 | new rating: 1489 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 281 | Smith, John (1410) | Lost 0-2 | -201477 |
| 2modern | 488 | Smith, Troy (1482) | Won 2-1 | +181495 |
| 3modern | 1048 | Bell, Clem (1500) | Won 0-0 | +181513 |
| 4modern | 185 | Dobbins, Terrance (1499) | Lost 0-2 | -181495 |
| 5modern | 398 | Orrmons, Kale (1514) | Lost 0-2 | -181477 |
| top | average opponent: 1481record: 2-3 | new rating: 1477 | ||
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 336 | Stasyszen, Jeremy (1500) | Lost 0-2 | -181482 |
| 2sealed | 425 | Smith, Hannah (1465) | Won 2-0 | +181500 |
| 3sealed | 321 | Shear, Clarence (1499) | Won 2-1 | +181518 |
| 4sealed | 302 | Brewster, John (1473) | Won 2-0 | +171535 |
| 5sealed | 266 | Jones, Austin (1484) | Lost 0-2 | -191516 |
| 6sealed | 305 | Makin, Nick (1439) | Lost 0-2 | -191497 |
| top | average opponent: 1477record: 3-3 | new rating: 1497 | ||