Chaves, Mariano
Current rating: 1454
Record: 8-8-1 (GP) / 1-5 (professional)
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 344 | Van Herrewegen, Erwin (1431) | Won 2-1 | +171475 |
| 3pioneer | 228 | Oliveros, Carlos (1768) | Won 2-1 | +231498 |
| 4pioneer | 155 | Corpus Selva, Rogelio (1734) | Lost 0-2 | -131485 |
| 5pioneer | 136 | Szmyd, Jedrek (1762) | Lost 0-2 | -131472 |
| 6pioneer | 459 | Degryse, Pepijn (1514) | Lost 1-2 | -181454 |
| top | average opponent: 1642record: 2-3 | new rating: 1454 | ||
| Players Tour Brussels 2020 (pioneer) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 35 | Martin Jimenez, Luis (1616) | Won 2-1 | +201538 |
| 2draft | 35 | Vogt, Marc (2025) | Lost 0-2 | -101528 |
| 3draft | 35 | Costa, Gabriele (1501) | Lost 0-2 | -181510 |
| 4pioneer | 106 | Villa Perez, Pablo (1465) | Lost 1-2 | -191491 |
| 5pioneer | 178 | Thiele, Fabian (1639) | Lost 1-2 | -151476 |
| 6pioneer | 163 | Martins, Joao (1480) | Lost 0-2 | -181458 |
| top | average opponent: 1621record: 1-5 | new rating: 1458 | ||
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 197 | Souza, Jorge (1478) | Won 2-0 | +171555 |
| 3modern | 20 | Beer, Jonathan Fillipe (1489) | Draw 1-1 | -11554 |
| 4modern | 132 | Chagas, Joao (1535) | Lost 1-2 | -181536 |
| 5modern | 277 | Zilli Da Silva Jr., Jose (1555) | Lost 0-2 | -181518 |
| top | average opponent: 1514record: 1-2-1 | new rating: 1518 | ||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 426 | Laidane, Luiz Gustavo (1542) | Won 2-1 | +191519 |
| 2modern | 72 | Tostes Lemos, Rodolfo (1525) | Lost 1-2 | -181501 |
| 3modern | 526 | Righetto, Renan (1500) | Lost 1-2 | -181483 |
| 4modern | 623 | Gullyt Cardoso, Rafael (1469) | Won 2-1 | +181501 |
| 5modern | 388 | Souza, Vinicius (1466) | Won 2-0 | +171518 |
| 6modern | 213 | Bueno, Marcelo Henrique (1578) | Won 2-0 | +191537 |
| 7modern | 256 | dos Santos, Fabio (1618) | Lost 1-2 | -161521 |
| 8modern | 242 | Pardini, Bruno (1518) | Won 2-0 | +171538 |
| top | average opponent: 1527record: 5-3 | new rating: 1538 | ||