Calva, Julio
Current rating: 1604
Record: 23-18-1
| Grand Prix Mexico City 2016 (OGW limited) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 181 | Loyo, Yoqtan (1475) | Won 2-0 | +151640 |
| 2sealed | 12 | Preece, Jasper (1517) | Won 2-0 | +161656 |
| 3sealed | 71 | Rodrigues, Thiago (1759) | Lost 0-2 | -161640 |
| 4sealed | 188 | Ancona Licea, Javier (1517) | Won 2-0 | +161656 |
| 5sealed | 108 | Hostutler, Justin (1754) | Lost 1-2 | -161640 |
| 6sealed | 181 | Retana, Carlos (1641) | Lost 1-2 | -181622 |
| 7sealed | 190 | Gallegos, Moises (1642) | Lost 1-2 | -181604 |
| top | average opponent: 1615record: 3-4 | new rating: 1604 | ||
| Grand Prix Mexico City 2015 (FRF limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 236 | Salgado Aragon, Cesar (1427) | Won 2-0 | +161568 |
| 2sealed | 105 | Alucin, Jorge A (1450) | Won 2-1 | +161584 |
| 3sealed | 66 | Montessoro, Jorge (1533) | Draw 1-1 | -11583 |
| 4sealed | 61 | Merino Escutia, Sergio (1599) | Won 2-1 | +181601 |
| 5sealed | 32 | Rodrigues, Thiago (1801) | Won 2-1 | +221623 |
| 6sealed | 16 | Diaz, Hugo (1629) | Won 2-0 | +181641 |
| 7sealed | 10 | Hernandez Resendiz, Sinuhe (1643) | Won 2-0 | +181659 |
| 8sealed | 5 | Freeman, Marcelino (1834) | Lost 1-2 | -151644 |
| 9sealed | 17 | Murcia, Edna (1588) | Lost 0-2 | -191625 |
| top | average opponent: 1612record: 6-2-1 | new rating: 1625 | ||
| Grand Prix Mexico City 2014 (BNG limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Gomez, Angel F (1521) | Won 2-1 | +191497 |
| 2sealed | 155 | Rauda Zamudio, Ramiro (1597) | Won 2-0 | +201517 |
| 3sealed | 63 | Hernandez Avila, Carlos (1604) | Won 2-1 | +191536 |
| 4sealed | 9 | Mendez Vidal, Jose M (1521) | Won 2-1 | +181554 |
| 5sealed | 24 | Dominguez Roldan, Alfredo (1666) | Lost 0-2 | -161538 |
| 6sealed | 25 | Gutierrez Saldate, Luis Fernando (1556) | Won 2-1 | +181556 |
| 7sealed | 14 | Lalague, Marc (1866) | Lost 1-2 | -121544 |
| 8sealed | 86 | Elizondo, Hugo (1559) | Won 2-1 | +181562 |
| 9draft | 11 | Becerra Reyes, Carlos (1789) | Lost 1-2 | -141548 |
| 10draft | 5 | Hernandez Argueta, Fernando (1556) | Won 2-0 | +181566 |
| 11draft | 1 | Alvarado, Antonio (1555) | Won 2-1 | +181584 |
| 12draft | 24 | Becerra Reyes, Carlos (1794) | Lost 1-2 | -141570 |
| 13draft | 48 | Serrano, Alexis (1586) | Lost 0-2 | -181552 |
| top | average opponent: 1628record: 8-5 | new rating: 1552 | ||
| Grand Prix Guadalajara 2013 (DGM standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 101 | Flores Morales, Benjam (1500) | Lost 1-2 | -181498 |
| 2standard | 118 | Gutierrez Saldate, Gabriel (1517) | Won 2-1 | +181516 |
| 3standard | 61 | Rios Ruiz, Miguel Tomas (1543) | Lost 1-2 | -171499 |
| 4standard | 170 | Velasquez Fuentes, Ranfil (1384) | Lost 0-2 | -201479 |
| 5standard | 199 | Franco Gonzalez, Jesus (1463) | Won 2-1 | +181497 |
| 6standard | 137 | Gallegos, Alejandra (1481) | Lost 1-2 | -191478 |
| top | average opponent: 1481record: 2-4 | new rating: 1478 | ||
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Yunes Mendez, Saolo Hafid (1500) | Won 2-1 | +181518 |
| 2sealed | 13 | Morales Arrieta, Luis Angel (1518) | Won 2-1 | +181536 |
| 3sealed | 9 | Orozco, Roberto (1478) | Won 2-0 | +171553 |
| 4sealed | 18 | Avila Gutierrez, Marlon Jacob (1500) | Lost 0-2 | -191534 |
| 5sealed | 42 | Ramos, Luis [MEX] (1555) | Won 2-1 | +181552 |
| 6sealed | 61 | Mancilla Hernandez, Carlos (1598) | Lost 0-2 | -171535 |
| 7sealed | 78 | Miranda, Andre (1488) | Lost 0-2 | -191516 |
| top | average opponent: 1520record: 4-3 | new rating: 1516 | ||