Perfetto, Luis Umberto
Current rating: 1395
Record: 4-11-1
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1378 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 79 | Lybaert, Marijn (1916) | Lost 1-2 | -91369 |
| 2pioneer | 422 | Desmidt, Lino (1520) | Won 2-0 | +211390 |
| 3pioneer | 685 | Perrois, Romain (1503) | Won 2-0 | +201410 |
| 4pioneer | 227 | Haleblian, Boris (1396) | Won 2-0 | +171427 |
| 5pioneer | 332 | Grieger, Stefan (1467) | Lost 0-2 | -171410 |
| 6pioneer | 435 | Bessa, Vitor (1595) | Lost 0-2 | -151395 |
| top | average opponent: 1566record: 3-3 | new rating: 1395 | ||
| Grand Prix Barcelona 2019 (modern) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 190 | Berg, Matthias (1465) | Lost 0-2 | -181411 |
| 2modern | 512 | Zibella, Francesco (1481) | Lost 1-2 | -161395 |
| 3modern | 682 | Ertl, Kevin (1464) | Lost 1-2 | -171378 |
| top | average opponent: 1470record: 0-3 | new rating: 1378 | ||
| Grand Prix Copenhagen 2019 (MH1 limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 295 | Stilling, Peter (1463) | Lost 0-2 | -181445 |
| 2sealed | 382 | Clemedtson, Christopher (1478) | Lost 0-2 | -181427 |
| 3sealed | 579 | Zhang, Raymond (1463) | Won 2-1 | +191446 |
| 4sealed | 486 | Kilgore, Jesse (1486) | Lost 0-2 | -171429 |
| top | average opponent: 1472record: 1-3 | new rating: 1429 | ||
| Grand Prix Bilbao 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 261 | Gutierrez, David [ESP] (1453) | Draw 1-1 | -11499 |
| 2modern | 386 | Hoog, Erik (1471) | Lost 0-2 | -181481 |
| 3modern | 683 | Epelde, Inigo (1481) | Lost 1-2 | -181463 |
| top | average opponent: 1468record: 0-2-1 | new rating: 1463 | ||