Oikonomidis, Irodotos
Current rating: 1393
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 118 | Vilaca, Joao (1520) | Lost 1-2 | -161408 |
| 3sealed | 210 | Wheeler, Tim (1473) | Lost 0-2 | -171391 |
| 4sealed | 251 | van der Willigen, Guus (1482) | Won 2-0 | +201411 |
| 5sealed | 223 | Marques, Rodolfo (1421) | Lost 0-2 | -181393 |
| top | average opponent: 1474record: 1-3 | new rating: 1393 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 49 | Rozen, David (1500) | Lost 1-2 | -171448 |
| 5sealed | 70 | Meulders, Fried (1851) | Lost 1-2 | -111437 |
| 6sealed | 143 | Cavaglieri, William (1752) | Lost 1-2 | -131424 |
| top | average opponent: 1701record: 0-3 | new rating: 1424 | ||
| Grand Prix Athens 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 135 | Panajotov, Aleksandar (1500) | Lost 0-2 | -181482 |
| 2sealed | 147 | Economou, Fivos (1482) | Won 2-0 | +181500 |
| 3sealed | 84 | Grizis, Nick (1500) | Lost 1-2 | -181482 |
| 4sealed | 1 | Ashby, Claire (1540) | Lost 0-2 | -171465 |
| top | average opponent: 1506record: 1-3 | new rating: 1465 | ||