Guzman, Porfirio
Current rating: 1468
Record: 5-8
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 265 | Ye, Jason (1500) | Lost 0-2 | -181481 |
| 2sealed | 366 | LeBlanc, Aaron (1735) | Won 2-0 | +221503 |
| 3sealed | 479 | Cuttler, William (1569) | Lost 1-2 | -171486 |
| 4sealed | 508 | Watson, Landers (1484) | Lost 0-2 | -181468 |
| average opponent: 1572record: 1-3 | new rating: 1468 | |||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 206 | Sulak, Andrew (1630) | Won 2-0 | +201520 |
| 2sealed | 39 | Lee, Eric (1592) | Lost 0-2 | -161504 |
| 3sealed | 272 | Curleyhair, Ethan (1645) | Lost 1-2 | -161488 |
| 4sealed | 463 | Mercado, Neil (1486) | Won 2-0 | +181506 |
| 5sealed | 407 | Rhett, Matthew (1484) | Won 2-1 | +181524 |
| 6sealed | 180 | Chavez, Rafael (1721) | Won 2-0 | +211545 |
| 7sealed | 118 | [anonymous] | Lost 0-2 | -201525 |
| 8sealed | 257 | McCord, Kristopher (1927) | Lost 0-2 | -111514 |
| 9sealed | 261 | Hu, Shengling (1654) | Lost 0-2 | -151499 |
| average opponent: 1618record: 4-5 | new rating: 1499 | |||