Chacon, Justo
Current rating: 1535
Record: 16-14-1
| Grand Prix Barcelona 2019 (modern) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 255 | Munoz Marco, Hector (1500) | Won 2-1 | +171587 |
| 2modern | 183 | Alvarez, Camelia (1504) | Won 2-1 | +161603 |
| 3modern | 304 | Angles, Pablo (1528) | Lost 0-2 | -191584 |
| 4modern | 239 | Kreutz, Stefan (1464) | Lost 1-2 | -201564 |
| 5modern | 391 | Marcotti, Davide (1870) | Lost 0-1 | -131551 |
| 6modern | 505 | Jager, Alexander (1547) | Won 2-1 | +181569 |
| 7modern | 426 | Casati, Dario (1721) | Lost 0-2 | -151554 |
| 8modern | 366 | Hanssen, Marco (1487) | Lost 0-2 | -191535 |
| top | average opponent: 1578record: 3-5 | new rating: 1535 | ||
| Grand Prix Barcelona 2018 (modern) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 331 | Nevot, Jordi (1539) | Lost 1-2 | -191552 |
| 4modern | 223 | Guarneri, Harold (1499) | Lost 1-2 | -191533 |
| 5modern | 542 | Sarbu, Carmen (1509) | Won 2-0 | +181551 |
| 6modern | 407 | Manteca, Federico (1623) | Lost 0-2 | -171534 |
| 7modern | 393 | Smith, Ben [IRL] (1421) | Won 2-1 | +161550 |
| 8modern | 321 | van Alphen, Pascal (1673) | Won 2-1 | +201570 |
| top | average opponent: 1544record: 3-3 | new rating: 1570 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 514 | Marafante, Federico (1500) | Won 2-0 | +171556 |
| 2modern | 34 | Mouvet, Nicolas (1518) | Lost 1-2 | -191537 |
| 3modern | 538 | Urban, Martin (1499) | Won 2-0 | +181555 |
| 4modern | 620 | Hatschka, Christian (1484) | Won 2-1 | +161571 |
| 5modern | 135 | Bernaud, Sebastien (1667) | Won 2-1 | +201591 |
| 6modern | 83 | Colangelo, Gianluca (1554) | Lost 0-2 | -191572 |
| 7modern | 358 | Mazzeo, Gerald (1503) | Lost 0-2 | -191553 |
| 8modern | 483 | Valsecchi, Lorenzo (1530) | Won 2-1 | +181571 |
| top | average opponent: 1532record: 5-3 | new rating: 1571 | ||
| Grand Prix Santiago 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 159 | Matoso Mendes, Luis Fernando (1500) | Won 2-1 | +181518 |
| 2modern | 159 | dos Santos Esteves, Carlos Alexandre (1683) | Draw 1-1 | +31521 |
| 3modern | 169 | Gericke Z, Ignacio (1642) | Won 2-1 | +201541 |
| 4modern | 98 | Lazarte, Patricio (1536) | Lost 0-2 | -181523 |
| 5modern | 177 | Aravena, Tomas (1492) | Lost 0-2 | -181505 |
| 6modern | 229 | Morales, Pablo (1466) | Won 2-0 | +171522 |
| 7modern | 165 | cordero, jorge (1503) | Won 2-0 | +171539 |
| 8modern | 120 | Lescano, Juan (1536) | Won 2-1 | +181557 |
| 9modern | 80 | Leiva, Victor (1524) | Lost 1-2 | -181539 |
| top | average opponent: 1542record: 5-3-1 | new rating: 1539 | ||