Pereira, Jeffrey R
Current rating: 1537
Record: 8-6
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 12 | Hunter, Neal (1500) | Lost 1-2 | -191501 |
| 2standard | 307 | Moore, Christopher S (1447) | Won 2-0 | +171518 |
| 3standard | 210 | Stutt, Adam (1508) | Won 2-0 | +181536 |
| 4standard | 379 | Sipe, Eric (1634) | Lost 0-2 | -161520 |
| 5standard | 336 | Valdes, George (1503) | Won 2-1 | +181538 |
| 6standard | 354 | Leake, Jesse (1523) | Won 2-1 | +171555 |
| 7standard | 198 | Rosenthal, Stephen (1532) | Lost 0-2 | -181537 |
| average opponent: 1521record: 4-3 | new rating: 1537 | |||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 120 | Von Hoff, Niel (1500) | Won 2-1 | +181518 |
| 2sealed | 81 | Perdue, Mark P (1471) | Won 2-1 | +171535 |
| 3sealed | 141 | Henricks, J.T. (1453) | Lost 0-2 | -191516 |
| 4sealed | 146 | Chandler, Charles (1517) | Lost 1-2 | -181498 |
| 5sealed | 205 | Hurwitz, Victor (1500) | Won 2-0 | +181516 |
| 6sealed | 233 | Doshi, Vishvas (1583) | Won 2-1 | +191535 |
| 7sealed | 124 | Vargas, Andrew (1680) | Lost 0-2 | -151520 |
| average opponent: 1529record: 4-3 | new rating: 1520 | |||