Vaz Mariano, Jefferson
Current rating: 1461
Record: 8-12-1
| MagicCon Barcelona 2023 Limited Open (LTR limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3121 | Wolfgramm, Hannah (1467) | Draw 1-1 | -11516 |
| 2sealed | 3111 | Marchi, Damiano (1500) | Lost 1-2 | -181498 |
| 3sealed | 3155 | Amaro da Silveira, Bruno (1503) | Lost 1-2 | -181480 |
| 4sealed | 3179 | Schmidt, Sven (1484) | Won 2-0 | +181498 |
| 5sealed | 3138 | Pol Sala, Marc (1500) | Lost 1-2 | -181480 |
| 6sealed | 3129 | Escuder, Jordi (1453) | Lost 1-2 | -191461 |
| average opponent: 1485record: 1-4-1 | new rating: 1461 | |||
| Regional Championships Athens 2023 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 148 | Tamosiunas, Edvinas (1500) | Lost 0-2 | -181482 |
| 2pioneer | 165 | Hanousek, Tomas (1564) | Won 2-0 | +201502 |
| 3pioneer | 85 | Guerri, Diego (1508) | Won 2-1 | +181520 |
| 4pioneer | 68 | Saiz, Juan (1521) | Won 2-1 | +181538 |
| 5pioneer | 16 | Rizzi, Andrea (1697) | Lost 1-2 | -151523 |
| 6pioneer | 108 | Orellana, Marco (1632) | Won 2-1 | +201543 |
| 7pioneer | 64 | Calcano, Christian (1819) | Won 2-1 | +221565 |
| 8pioneer | 43 | Deltour, Louis (1844) | Won 2-1 | +231588 |
| 9pioneer | 25 | Moreira, Joao (1954) | Lost 1-2 | -111577 |
| 10pioneer | 36 | M, Emil (1577) | Won 2-1 | +181595 |
| 11pioneer | 32 | Vigo Rivera, Daniel (1566) | Lost 0-2 | -191576 |
| 12pioneer | 34 | Bossy, Gaetan (1819) | Lost 1-2 | -131563 |
| 13pioneer | 50 | Lorenc, Michal (1848) | Lost 1-2 | -131550 |
| 14pioneer | 47 | Frontuto, Daniele (1547) | Lost 1-2 | -181532 |
| 15pioneer | 52 | Kopec, Mateusz (1716) | Lost 1-2 | -151517 |
| average opponent: 1674record: 7-8 | new rating: 1517 | |||