Sierra, Juan
Current rating: 1494
| Grand Prix Barcelona 2018 (modern) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 299 | Uriarte, Alain (1500) | Won 2-0 | +181496 |
| 2modern | 322 | Bauer, Steffen (1516) | Lost 0-2 | -171479 |
| 3modern | 609 | Burgin, Reto (1452) | Won 2-0 | +171496 |
| 4modern | 318 | Brolin, Nisse (1534) | Won 2-1 | +191515 |
| 5modern | 162 | Paredes, Mario (1518) | Lost 1-2 | -181497 |
| 6modern | 420 | Righini, Fabio (1578) | Draw 1-1 | +11498 |
| 7modern | 349 | Al-Kwatly Ayuso, Ismael (1442) | Draw 1-1 | -11497 |
| 8modern | 356 | Soustelle, Romain (1286) | Draw 1-1 | -31494 |
| top | average opponent: 1478record: 3-2-3 | new rating: 1494 | ||
| Grand Prix Madrid 2014 (modern) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 193 | Rame Garcia, Alvaro (1453) | Lost 1-2 | -191478 |
| 2modern | 625 | Lana Sabate, Guillem (1482) | Won 2-1 | +181496 |
| 3modern | 751 | Revilla, Daniel (1500) | Won 2-0 | +181514 |
| 4modern | 243 | Rodriguez, Bruno (1583) | Won 2-1 | +191533 |
| 5modern | 369 | Castejon Bravo, Daniel (1541) | Lost 0-1 | -171516 |
| 6modern | 550 | Holst, Sebastian (1469) | Lost 1-2 | -191497 |
| 7modern | 533 | Rama Lesmes, Fernando (1500) | Won 2-1 | +181515 |
| 8modern | 352 | Miranda, David (1479) | Lost 0-2 | -191496 |
| 9modern | 360 | Sineiro, Luis (1486) | Lost 0-2 | -181478 |
| top | average opponent: 1499record: 4-5 | new rating: 1478 | ||
| Grand Prix Madrid 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 854 | Sanchez, Luis Miguel 3523 (1500) | Won 2-0 | +181518 |
| 2legacy | 921 | Dannenmuller, Emmanuel (1483) | Won 2-1 | +171535 |
| 3legacy | 783 | Munoz Gomez, Borja (1536) | Won 2-1 | +181553 |
| 4legacy | 804 | Pascual, Ivan (1493) | Lost 1-2 | -191534 |
| 5legacy | 878 | Sanchez, Felix (1520) | Lost 0-2 | -181516 |
| 6legacy | 922 | Fernandez Bonilla, Luis (1449) | Lost 0-2 | -191497 |
| top | average opponent: 1497record: 3-3 | new rating: 1497 | ||