Guzman, Roberto
Current rating: 1545
Record: 9-8-1
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 255 | Ho, Lan (1591) | Won 2-0 | +211485 |
| 2sealed | 276 | Weingarten, Evan (1518) | Won 2-1 | +181503 |
| 3sealed | 133 | Steele, Thea (1687) | Won 2-0 | +221525 |
| 4sealed | 186 | Duterte, Daniel (1718) | Won 2-1 | +211546 |
| 5sealed | 40 | Ganz, Andreas (1858) | Won 2-1 | +241570 |
| 6sealed | 34 | Strong, Tom (1683) | Won 2-0 | +201590 |
| 7sealed | 9 | Rodgers, Ronald (1561) | Lost 0-2 | -191571 |
| 8sealed | 57 | LaFreniere, John (1665) | Lost 0-0 | -161555 |
| 9sealed | 92 | Shunamon, Jonathan (1698) | Won 2-1 | +201575 |
| 10draft | 87 | Michael, Kevin (1829) | Lost 0-2 | -131562 |
| 11draft | 30 | Morrison, Kyle (1541) | Lost 0-2 | -181544 |
| 12draft | 20 | Laforet, Jason (1457) | Won 2-1 | +161560 |
| 13draft | 58 | Kaplan, Lain (1702) | Lost 0-2 | -151545 |
| average opponent: 1654record: 8-5 | new rating: 1545 | |||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 467 | CAPALLO, JUSTIN D (1500) | Won 2-1 | +181518 |
| 2standard | 308 | Strange, Jason (1519) | Draw 1-1 | 01518 |
| 3standard | 298 | Sears, Elijah (1593) | Lost 0-2 | -171501 |
| 4standard | 539 | Gommer, Mike (1446) | Lost 0-2 | -191482 |
| 5standard | 628 | Berman, Ian (1480) | Lost 1-2 | -181464 |
| average opponent: 1508record: 1-3-1 | new rating: 1464 | |||