Roson, Nahuel
Current rating: 1706 (#6120)
Record: 46-34-4
| Regional Championships Santiago 2022 (pioneer) | starting rating: 1674 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 17 | Carmona, Roland (1541) | Won 2-0 | +161690 |
| 2pioneer | 12 | Simon, Eduardo (1489) | Won 2-0 | +141704 |
| 3pioneer | 11 | Robot, Blue (1539) | Won 2-1 | +151719 |
| 4pioneer | 10 | Almonacid, Robinson (1555) | Won 2-1 | +151734 |
| 5pioneer | 4 | Sandoval, Carlos (1574) | Lost 0-2 | -211713 |
| 6pioneer | 39 | Gayoso, Rodrigo (1730) | Won 2-1 | +191732 |
| 7pioneer | 6 | Sepulveda, Alejandro (1570) | Lost 1-2 | -211711 |
| 8pioneer | 9 | Gonzalez, Francisco (1457) | Draw 0-0 | -51706 |
| top | average opponent: 1557record: 5-2-1 | new rating: 1706 | ||
| Grand Prix Santiago 2017 (AKH standard) | starting rating: 1634 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 9 | Bossaneli Araujo, William (1851) | Won 2-1 | +221656 |
| 4standard | 55 | Vazquez, Jose (1554) | Lost 1-2 | -201636 |
| 5standard | 91 | Pocai, Andre (1488) | Won 2-0 | +161652 |
| 6standard | 88 | Pizarro, Eduardo (1609) | Lost 1-2 | -191633 |
| 7standard | 93 | Sanchez, Romulo (1526) | Lost 0-2 | -201613 |
| 8standard | 146 | Gaete, Nicolas (1464) | Won 2-0 | +151628 |
| 9standard | 149 | Oyarzun Jimenez, Paula (1536) | Won 2-1 | +171645 |
| 10standard | 343 | Grotto, Pablo (1536) | Won 2-1 | +161661 |
| 11standard | 339 | Valderrama, Conrado (1617) | Won 2-1 | +171678 |
| 12standard | 323 | Concha, Alfonso (1750) | Lost 0-2 | -171661 |
| 13standard | 333 | Rodriguez Villasuso, Ignacio (1620) | Won 2-0 | +171678 |
| 14standard | 311 | Veloso, Miguel (1586) | Lost 0-2 | -191659 |
| 15standard | 336 | Scasserra, Alejandro Tomas (1523) | Won 2-0 | +151674 |
| top | average opponent: 1589record: 8-5 | new rating: 1674 | ||
| Grand Prix Santiago 2016 (KLD standard) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 97 | Rivera, Guillermo (1654) | Won 2-0 | +191612 |
| 4standard | 23 | Astroza Tagle, Alonso (1647) | Won 2-0 | +191631 |
| 5standard | 11 | Truyol, Esteban (1733) | Won 2-1 | +201651 |
| 6standard | 17 | Gutierrez, Luis (1739) | Won 2-0 | +191670 |
| 7standard | 3 | Rosas, Cristobal (1591) | Draw 1-1 | -11669 |
| 8standard | 5 | Chavarria, John (1777) | Draw 0-0 | +21671 |
| 9standard | 13 | Fernandes Ferraz, Diego (1830) | Draw 1-1 | +31674 |
| 10standard | 25 | Barrozo, Andre (1671) | Won 2-1 | +181692 |
| 11standard | 9 | Del Popolo, Juan (1565) | Lost 1-2 | -211671 |
| 12standard | 34 | Garrido, Camilo (1555) | Lost 1-2 | -201651 |
| 13standard | 43 | Moreira Almonacid, Richard (1720) | Lost 1-2 | -171634 |
| 14standard | 62 | Esparza, Hernan (1589) | Won 2-0 | +181652 |
| 15standard | 41 | Martinez, Julian (1687) | Lost 0-2 | -181634 |
| top | average opponent: 1674record: 6-4-3 | new rating: 1634 | ||
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 75 | Cavalcanti, Rafael (1536) | Won 2-1 | +181558 |
| 4modern | 55 | Santiago Alves da Cruz, Danilo (1558) | Won 2-1 | +181576 |
| 5modern | 27 | Gonzalez, Fernando David (1561) | Won 1-0 | +171593 |
| 6modern | 4 | Greene, David (1625) | Lost 1-2 | -171576 |
| 7modern | 22 | Aqel, Muhammad (1546) | Lost 1-2 | -191557 |
| 8modern | 65 | Esteves Maciel, Frederico (1638) | Won 2-0 | +201577 |
| 9modern | 42 | De Souza Conceicao, Rodrigo (1545) | Won 2-0 | +171594 |
| 10modern | 33 | Lemos Mota, Matheus (1578) | Lost 0-0 | -181576 |
| 11modern | 33 | Ocampo, Daniel Morin (1541) | Won 2-0 | +171593 |
| 12modern | 30 | Laier, Gilmour (1596) | Lost 1-2 | -181575 |
| 13modern | 32 | Peixoto Simoes Lopes, Adriano (1552) | Won 0-0 | +181593 |
| 14modern | 23 | Velho de Quadros, Fausto (1589) | Won 2-1 | +181611 |
| 15modern | 18 | Salaroli, Phelipe (1617) | Lost 0-2 | -181593 |
| top | average opponent: 1575record: 8-5 | new rating: 1593 | ||
| Grand Prix Buenos Aires 2015 (DTK standard) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 42 | Conca, Maximiliano (1522) | Won 2-1 | +181515 |
| 3standard | 9 | de Jesus Freitas, Marcos Paulo (1765) | Lost 1-2 | -131502 |
| 4standard | 204 | Rojas, Andres (1438) | Won 2-0 | +171519 |
| 5standard | 46 | Cattoni, Lucas (1536) | Lost 1-2 | -181501 |
| 6standard | 187 | Cocchi, Exequiel (1573) | Won 2-0 | +191520 |
| 7standard | 111 | Dominguez, Martin Sebastian (1428) | Won 2-0 | +171537 |
| 8standard | 66 | Siskindovich, Santiago (1560) | Won 2-1 | +181555 |
| 9standard | 32 | Leveratto, Matias (1701) | Lost 1-2 | -151540 |
| top | average opponent: 1565record: 5-3 | new rating: 1540 | ||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 66 | Jaudy, Tulio (1799) | Lost 1-2 | -131504 |
| 5standard | 78 | De Nicola, Nicolas (1844) | Lost 0-2 | -121492 |
| 6standard | 132 | Quintana, Sebastian (1549) | Won 2-1 | +191511 |
| 7standard | 148 | Gonzalez, Mauricio (1551) | Lost 0-2 | -171494 |
| 8standard | 182 | Paradela, Tomas (1503) | Lost 0-2 | -181476 |
| 9standard | 187 | Contreras, Hugo (1645) | Won 2-0 | +211497 |
| top | average opponent: 1649record: 2-4 | new rating: 1497 | ||
| Grand Prix Santiago 2013 (THS standard) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 57 | Hidalgo Araya, Felipe (1573) | Won 2-0 | +201530 |
| 5modern | 51 | Quiroga, Mariano (1563) | Won 2-1 | +181548 |
| 6modern | 8 | Rocha, Hector Javier (1545) | Lost 1-2 | -181530 |
| 7modern | 152 | Cavalcante, Diego (1531) | Lost 0-2 | -181512 |
| 8modern | 56 | Carvalho, Pedro (1716) | Won 2-0 | +221534 |
| 9modern | 33 | Rodriguez, Matias (1597) | Lost 1-2 | -171517 |
| top | average opponent: 1588record: 3-3 | new rating: 1517 | ||
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 134 | de Paula Santos, Billy Anderson (1500) | Lost 0-2 | -181517 |
| 2standard | 244 | Longo Junior, Sergio (1414) | Lost 0-2 | -201497 |
| 3standard | 266 | Rodrigo Rossi Alves Cl, (1464) | Won 2-1 | +171514 |
| 4standard | 225 | Lima de Carvalho, Felipe (1480) | Won 2-1 | +181532 |
| 5standard | 186 | Paredes, Marcos (1500) | Lost 1-2 | -191513 |
| 6standard | 204 | De Souza Santos, Hugo Eduardo (1482) | Lost 0-0 | -191494 |
| 7standard | 192 | Veiga, Marco (1464) | Won 2-1 | +181512 |
| 8standard | 145 | Elton Nunes, (1481) | Lost 1-2 | -191493 |
| 9standard | 111 | Douglas Lino De Araujo, (1447) | Won 2-1 | +171510 |
| top | average opponent: 1470record: 4-5 | new rating: 1510 | ||
| Grand Prix Buenos Aires 2008 (SHM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 56 | Ortellado, Victor Daniel (1500) | Lost 1-2 | -181482 |
| 2standard | 170 | Aguilar, Emiliano (1482) | Won 2-0 | +181500 |
| 3standard | 195 | ROMERO, CARLOS ANDRES (1500) | Won 2-1 | +181518 |
| 4standard | 166 | De Marco, Claudio (1503) | Lost 1-2 | -181500 |
| 5standard | 197 | Camacho, Marcelo German (1500) | Won 2-0 | +181518 |
| 6standard | 119 | PURIC, HERNAN (1482) | Lost 0-2 | -191499 |
| 7standard | 138 | Rivas, Jose (1504) | Won 2-0 | +181517 |
| 8standard | 123 | alvarez, agustin (1524) | Won 2-1 | +181535 |
| top | average opponent: 1499record: 5-3 | new rating: 1535 | ||