Achcar, Omar
Current rating: 1570
Record: 18-12-1
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Yaciw, Jake (1578) | Lost 1-2 | -191600 |
| 2sealed | 348 | Hollett, Brian (1485) | Won 2-1 | +161616 |
| 3sealed | 433 | Wredberg, Gregory (1467) | Lost 0-2 | -211595 |
| 4sealed | 461 | Korompis, Rudolph (1513) | Lost 0-2 | -191576 |
| 5sealed | 470 | Suchomlinow, Jorge (1409) | Won 2-0 | +151591 |
| 6sealed | 365 | Garvin, Andrew (1626) | Lost 0-2 | -181573 |
| 7sealed | 309 | Greenwood, Jake (1468) | Lost 0-2 | -191554 |
| 8sealed | 237 | Kuhnke, Prez (1443) | Won 2-1 | +161570 |
| top | average opponent: 1499record: 3-5 | new rating: 1570 | ||
| Grand Prix Mexico City 2014 (BNG limited) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Alatorre, Alejandro (1500) | Won 2-0 | +161614 |
| 2sealed | 105 | Gutierrez, Felix (1484) | Lost 1-2 | -211593 |
| 3sealed | 155 | Arellano Hernandez, Aldo (1386) | Won 2-1 | +151608 |
| 4sealed | 153 | Trevino, Cesar (1519) | Won 2-0 | +161624 |
| 5sealed | 100 | De La Cruz Galvan, Alain Amado (1520) | Lost 1-2 | -201604 |
| 6sealed | 95 | Aboumrad, Gabriel (1531) | Lost 1-2 | -191585 |
| 7sealed | 202 | Hernandez, Daniel [MEX] (1561) | Won 2-0 | +171602 |
| 8sealed | 115 | Zambrano, Abraham (1516) | Won 2-0 | +171619 |
| top | average opponent: 1502record: 5-3 | new rating: 1619 | ||
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Carballo, Andres (1500) | Won 2-0 | +171552 |
| 3sealed | 113 | Viloria, Eduardo (1518) | Won 2-1 | +181570 |
| 4sealed | 88 | Villalobos, Luis (1505) | Won 2-1 | +161586 |
| 5sealed | 54 | picado, edson (1516) | Won 2-1 | +171603 |
| 6sealed | 29 | Succari, Manuel (1519) | Won 2-1 | +171620 |
| 7sealed | 14 | Madriz, Ricardo (1451) | Lost 0-2 | -211599 |
| 8sealed | 49 | Sanabria, Andres (1547) | Draw 1-1 | -11598 |
| top | average opponent: 1508record: 5-1-1 | new rating: 1598 | ||
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Soto Hernandez, Rodrigo (1426) | Won 2-1 | +171517 |
| 2sealed | 28 | rodriguez, isaac (1518) | Lost 0-2 | -181499 |
| 3sealed | 136 | Cordero Soriano, Carlos (1500) | Lost 0-2 | -181481 |
| 4sealed | 268 | Caballero, Homero (1483) | Lost 0-2 | -181463 |
| 5sealed | 267 | Munoz, Mizraim Jussef (1464) | Won 2-0 | +181481 |
| 6sealed | 226 | valencia, ismael (1482) | Won 2-0 | +181499 |
| 7sealed | 170 | Maldonado, Ulises (1499) | Won 2-1 | +181517 |
| 8sealed | 122 | Flores Duran, Jorge (1519) | Won 2-1 | +181535 |
| top | average opponent: 1486record: 5-3 | new rating: 1535 | ||