Preto, Marcio Demetrius
Current rating: 1487
| Grand Prix Sao Paulo 2019 (2) (ELD standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| B1standard | 63 | Guedes, Samuel (1506) | Won 2-0 | +191451 |
| B2standard | 27 | Queiroz de Figueiredo, Jadiel (1510) | Won 2-0 | +191470 |
| B3standard | 45 | Moreira, Marcio (1536) | Won 2-0 | +201490 |
| B4standard | 28 | Juza, Martin (1962) | Won 0-0 | +261516 |
| B5standard | 1 | Rodrigues, Fabricio (1502) | Lost 0-2 | -191497 |
| B6standard | 20 | Formici, Carlos (1539) | Lost 0-2 | -171480 |
| B7standard | 46 | Di Cicco, Mario (1579) | Won 2-1 | +201500 |
| B8standard | 35 | Esper Berthoud, Lucas (1814) | Lost 0-2 | -131487 |
| top | average opponent: 1619record: 5-3 | new rating: 1487 | ||
| Grand Prix Porto Alegre 2017 (AER standard) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 103 | Ioppolo, Pablo (1816) | Won 2-0 | +251452 |
| 4standard | 50 | Borges, Eduardo (1872) | Lost 1-2 | -111441 |
| 5standard | 84 | Campos Micin, Niko (1461) | Lost 1-2 | -171424 |
| 6standard | 153 | Ramos De Souza, Lucas (1489) | Won 2-1 | +191443 |
| 7standard | 96 | Wood, Gabriel Jose (1641) | Lost 0-2 | -141429 |
| 8standard | 125 | Correa Koeppe, Richard (1563) | Lost 0-2 | -161413 |
| 9standard | 141 | Braga, Daniel (1466) | Won 2-1 | +191432 |
| top | average opponent: 1615record: 3-4 | new rating: 1432 | ||
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 84 | Luiz Cordeiro, Hudson (1500) | Lost 0-2 | -181482 |
| 2standard | 549 | Rocha e Silva, Diego Henrique (1482) | Won 2-1 | +181500 |
| 3standard | 475 | Guaita, Nahuel (1501) | Lost 0-2 | -181482 |
| 4standard | 476 | Paiva Luquez, Gustavo (1469) | Lost 0-2 | -181464 |
| 5standard | 519 | Antonio Fernando d A, (1464) | Lost 1-2 | -181446 |
| 6standard | 469 | Avila Andrade, Oswaldo (1429) | Lost 0-2 | -191427 |
| top | average opponent: 1474record: 1-5 | new rating: 1427 | ||