Casco, Guillermo
Current rating: 1434
Record: 8-13-2
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 215 | Olyan, Andrew (1445) | Draw 1-1 | 01427 |
| 2modern | 640 | Drew, Zachary (1482) | Won 2-0 | +191446 |
| 3modern | 773 | Hummel, Gary (1696) | Lost 0-2 | -131433 |
| 4modern | 1029 | Marin, Isaac (1410) | Lost 1-2 | -191414 |
| 5modern | 1198 | Keegan, Cody (1478) | Won 2-0 | +191433 |
| 6modern | 951 | Adams, Michael (1451) | Won 2-0 | +191452 |
| 7modern | 701 | Boyle, Keith (1484) | Lost 1-2 | -181434 |
| top | average opponent: 1492record: 3-3-1 | new rating: 1434 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Kim, Jeremy (1500) | Lost 0-2 | -181462 |
| 2sealed | 355 | Maginnis, Sean (1482) | Lost 0-2 | -171445 |
| 3sealed | 405 | Reyna, Ryan (1463) | Lost 0-2 | -181427 |
| top | average opponent: 1482record: 0-3 | new rating: 1427 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 446 | Deen, Steven (1500) | Won 2-0 | +191471 |
| 2standard | 122 | White, Chad (1642) | Lost 1-2 | -151456 |
| 3standard | 394 | Becker, Dylan (1502) | Draw 1-1 | 01456 |
| 4standard | 541 | Harris, Ethan (1449) | Won 2-1 | +181474 |
| 5standard | 387 | Wingert, James (1522) | Won 2-0 | +191493 |
| 6standard | 241 | Cruz, Andres (1521) | Won 2-1 | +191512 |
| 7standard | 144 | Ashby, Raymond (1560) | Lost 1-2 | -171495 |
| 8standard | 243 | Evans, Eli (1673) | Lost 0-2 | -151480 |
| top | average opponent: 1546record: 4-3-1 | new rating: 1480 | ||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 71 | Wing, Harold (1500) | Lost 0-2 | -181482 |
| 2standard | 538 | Inoue, Sean (1795) | Lost 0-2 | -121470 |
| 3standard | 674 | Swift, Zane (1412) | Won 2-0 | +161486 |
| 4standard | 605 | Moses, Charles (1563) | Lost 0-2 | -161470 |
| 5standard | 551 | Molloy, John (1457) | Lost 0-2 | -181452 |
| top | average opponent: 1545record: 1-4 | new rating: 1452 | ||