Guardino, Chet
Current rating: 1459
Record: 6-9
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 400 | Trembley, Chris (1638) | Lost 1-2 | -141414 |
| 2standard | 390 | Walker, Louis (1470) | Lost 1-2 | -171397 |
| 3standard | 518 | Livingston, Denise (1464) | Won 2-1 | +191416 |
| 4standard | 507 | Geller, Alex (1481) | Won 2-0 | +191435 |
| 5standard | 420 | Terzakis, John (1501) | Won 2-0 | +191454 |
| 6standard | 251 | Crotts, Caleb (1497) | Lost 0-2 | -171437 |
| 7standard | 308 | Rodriguez, Jonathan (1503) | Won 2-0 | +191456 |
| 8standard | 207 | Smith, Ryan 2273 (1522) | Lost 1-2 | -161440 |
| 9standard | 221 | Klauser, Christian (1505) | Won 2-0 | +191459 |
| average opponent: 1509record: 5-4 | new rating: 1459 | |||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 73 | Wade, Brian (1499) | Lost 1-2 | -181482 |
| 2sealed | 234 | Jordan, Jason (1462) | Won 2-0 | +181500 |
| 3sealed | 230 | Newberger, Justin (1546) | Lost 1-2 | -181482 |
| 4sealed | 287 | Bradley, James (1454) | Lost 1-2 | -181464 |
| 5sealed | 313 | Youngman, Ashlie (1464) | Lost 1-2 | -181446 |
| 6sealed | 282 | Adams, Timothy (1445) | Lost 0-2 | -181428 |
| average opponent: 1478record: 1-5 | new rating: 1428 | |||