Mazzeo, Gerald
Current rating: 1509
Record: 13-13
| Grand Prix Lyon 2018 (modern) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 620 | Tell, Roman (1500) | Won 2-1 | +181486 |
| 2modern | 207 | Knittel, Fabrice (1412) | Won 2-0 | +171503 |
| 3modern | 13 | Kecke, Paul (1485) | Won 2-0 | +181521 |
| 4modern | 102 | Blanc, Jean-Gabriel (1515) | Lost 1-2 | -181503 |
| 5modern | 378 | Scaramelli, Ugo (1534) | Lost 0-2 | -181485 |
| 6modern | 481 | Nguyen, Guillaume (1447) | Won 2-1 | +181503 |
| 7modern | 358 | Chacon, Justo (1572) | Won 2-0 | +191522 |
| 8modern | 160 | Poinsignon, Pierre (1531) | Won 2-1 | +181540 |
| 9modern | 98 | Nogueira, Vitor (1576) | Lost 1-2 | -171523 |
| 10modern | 181 | Sauvageon, Kevin (1787) | Lost 0-2 | -141509 |
| top | average opponent: 1536record: 6-4 | new rating: 1509 | ||
| Grand Prix Strasbourg 2013 (legacy) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 112 | Staat, Philipp (1499) | Lost 1-2 | -191517 |
| 3legacy | 357 | Tagi-Zade, Eldar (1811) | Lost 0-0 | -131504 |
| 4legacy | 602 | Detzner, Alexander (1483) | Lost 1-2 | -181486 |
| 5legacy | 547 | Gourrierec, Guillaume (1479) | Lost 0-2 | -181468 |
| top | average opponent: 1568record: 0-4 | new rating: 1468 | ||
| Grand Prix Paris 2004 (COK limited) | starting rating: 1555 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 158 | mocquillon, Yannick (1500) | Lost 0-2 | -191536 |
| 2sealed | 289 | Dugne, Christophe (1482) | Won 2-1 | +171553 |
| 3sealed | 177 | Cestaro, Laurent (1579) | Lost 0-2 | -171536 |
| top | average opponent: 1520record: 1-2 | new rating: 1536 | ||
| Grand Prix Lyon 2003 (MRD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 136 | Marques, Nicolas (1500) | Won 2-0 | +181518 |
| 2sealed | 139 | Hothow, Dominik (1712) | Won 2-1 | +221540 |
| 3sealed | 6 | Martin, Nicolas (A) (1537) | Lost 1-2 | -191521 |
| 4sealed | 223 | Goodall, Etienne (1518) | Won 2-0 | +181539 |
| 5sealed | 80 | Remlinger, Michel (1541) | Lost 1-2 | -181521 |
| 6sealed | 149 | Villa, Francesco (1521) | Lost 1-2 | -181503 |
| 7sealed | 205 | Ragull Puig, Miquel (1496) | Won 2-1 | +181521 |
| 8sealed | 173 | Deutschmann, Thierry (1417) | Won 2-0 | +161537 |
| 9sealed | 103 | Bernier, Jerome (1540) | Won 2-1 | +181555 |
| top | average opponent: 1531record: 6-3 | new rating: 1555 | ||