De Souza Costa, Carlos Eduardo
Current rating: 1488
Record: 6-7-3
| Grand Prix Porto Alegre 2017 (AER standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 114 | Terra, Pedro (1500) | Won 2-1 | +181484 |
| 2standard | 62 | Oliveira, Marcos (1518) | Draw 1-1 | +11485 |
| 3standard | 144 | De Freitas Silva, Heliel (1534) | Draw 1-1 | +11486 |
| 4standard | 190 | Hervas, Lucas (1552) | Draw 1-1 | +11487 |
| 5standard | 190 | Castelo, Darcio (1555) | Lost 1-2 | -171470 |
| 6standard | 199 | Varela, Thalles (1492) | Won 2-0 | +191489 |
| 7standard | 187 | Etges, Artur (1501) | Won 2-1 | +181507 |
| 8standard | 106 | Poletto Poletto, Tiago (1524) | Won 2-0 | +181525 |
| 9standard | 109 | Zerbinatti, Edson (1479) | Won 2-1 | +171542 |
| 10standard | 80 | Wood, Gabriel Jose (1657) | Lost 0-2 | -151527 |
| 11standard | 85 | Alexandre De Paula, Carlos (1533) | Lost 1-2 | -181509 |
| 12standard | 81 | Pacheco, Marcus (1373) | Lost 1-2 | -211488 |
| average opponent: 1518record: 5-4-3 | new rating: 1488 | |||
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 77 | Karim Bueno, Alexandre (1442) | Won 2-1 | +171517 |
| 4modern | 24 | Graca, Thiago (1542) | Lost 1-2 | -181499 |
| 5modern | 150 | Soares, Marco Tulio (1537) | Lost 1-2 | -171482 |
| 6modern | 143 | Bachmann, Oscar Mathias (1573) | Lost 0-2 | -161466 |
| average opponent: 1524record: 1-3 | new rating: 1466 | |||