D'Umbra, George E.
Current rating: 1446
Record: 2-5
| Grand Prix Sao Paulo 2002 (JUD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 84 | Tsurukawa de Sousa, Guilherm (1500) | Lost 0-2 | -181482 |
| 2standard | 111 | Pessis Carneiro Kern, Robson (1481) | Lost 0-2 | -181464 |
| 3standard | 139 | Marin, Gustavo (1464) | Lost 0-2 | -181446 |
| 4standard | 159 | Gloder, Otavio Augusto (1446) | Won 2-0 | +181464 |
| 5standard | 144 | Pinto, Renato (1465) | Won 2-0 | +181482 |
| 6standard | 122 | Birckholz, Nicholas Alexander (1483) | Lost 0-2 | -181464 |
| 7standard | 122 | Foschini, Caetano Arthur (1464) | Lost 0-2 | -181446 |
| average opponent: 1472record: 2-5 | new rating: 1446 | |||