Nachman, David
Current rating: 1295
Record: 9-25-2
| Grand Prix Santiago 2015 (ORI limited) | starting rating: 1332 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 43 | Tejo, Demian (1804) | Lost 0-2 | -101322 |
| 4sealed | 222 | Barrientos Campos, Waldemar (1589) | Lost 0-2 | -141308 |
| 5sealed | 196 | Espinoza, Roberto (1572) | Lost 0-2 | -131295 |
| top | average opponent: 1655record: 0-3 | new rating: 1295 | ||
| Grand Prix Buenos Aires 2015 (DTK standard) | starting rating: 1309 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 249 | Cano, Maximiliano E (1500) | Won 2-1 | +221331 |
| 2standard | 141 | Busch, Werner (1518) | Won 2-0 | +211352 |
| 3standard | 25 | Vargas Paez, Javier (1604) | Won 2-1 | +231375 |
| 4standard | 37 | Verdu, Alberto (1534) | Lost 1-2 | -151360 |
| 5standard | 85 | Oliveira Graichen, Leonardo (1625) | Lost 1-2 | -141346 |
| 6standard | 191 | Zamorano, Pablo (1527) | Lost 0-2 | -141332 |
| top | average opponent: 1552record: 3-3 | new rating: 1332 | ||
| Grand Prix Santiago 2014 (KTK standard) | starting rating: 1336 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 71 | Jofre, Cristian (1500) | Draw 1-1 | +31339 |
| 4standard | 69 | Valdivia, Juan (1537) | Lost 0-2 | -151324 |
| 5standard | 142 | Barraza, Eduardo (1505) | Lost 0-2 | -151309 |
| top | average opponent: 1514record: 0-2-1 | new rating: 1309 | ||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1373 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 163 | Bollati, Matias (1694) | Lost 1-2 | -131360 |
| 4standard | 256 | Albiaque, Jonathan (1536) | Lost 1-2 | -141346 |
| 5standard | 319 | Roriz Paiva, Lucas Fernandez (1500) | Won 2-1 | +201366 |
| 6standard | 163 | Viegas, Lucas (1500) | Lost 0-2 | -151351 |
| 7standard | 228 | Higa, Federico (1504) | Lost 0-2 | -151336 |
| top | average opponent: 1547record: 1-4 | new rating: 1336 | ||
| Grand Prix Santiago 2013 (THS standard) | starting rating: 1400 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 93 | Santibanez, Cesar (1485) | Won 2-1 | +191419 |
| 4modern | 52 | gonzalez, patricio (1518) | Lost 0-2 | -161403 |
| 5modern | 79 | medina, dante (1516) | Lost 1-2 | -161387 |
| 6modern | 140 | Meza, Raimundo (1589) | Lost 0-2 | -141373 |
| top | average opponent: 1527record: 1-3 | new rating: 1373 | ||
| Grand Prix Santiago 2011 (ISD limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Zuloaga, Felipe (1500) | Lost 1-2 | -171428 |
| 2sealed | 221 | Vargas, Nicolas (1482) | Lost 0-2 | -171411 |
| 3sealed | 291 | De Biasi, Julio (1556) | Won 2-0 | +211432 |
| 4sealed | 286 | Rojas, Carlos (1433) | Won 2-1 | +181450 |
| 5sealed | 258 | Guerra, Felix (1500) | Lost 1-2 | -171433 |
| 6sealed | 244 | Lagos, Cristian (1563) | Lost 0-2 | -161417 |
| 7sealed | 243 | Mancilla, Victor (1464) | Lost 0-2 | -171400 |
| top | average opponent: 1500record: 2-5 | new rating: 1400 | ||
| Grand Prix Buenos Aires 2008 (SHM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 82 | Tejo, Demian (1500) | Lost 0-2 | -181482 |
| 2standard | 168 | Calarota, Nicolas (1499) | Draw 1-1 | 01482 |
| 3standard | 219 | Viera, Ignacio (1482) | Lost 0-2 | -181464 |
| 4standard | 261 | KRAMER, ALBERTO OSCAR (1465) | Lost 1-2 | -181446 |
| 5standard | 255 | Rojas, Andres (1428) | Lost 0-2 | -181428 |
| 6standard | 238 | Manun, Pedro (1410) | Won 2-0 | +181446 |
| 7standard | 201 | Lousan, Ignacio (1410) | Won 2-1 | +171463 |
| 8standard | 164 | Desposito, Demian (1462) | Lost 1-2 | -181445 |
| top | average opponent: 1457record: 2-5-1 | new rating: 1445 | ||