Kostaras, Anastasios
Current rating: 1627
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 218 | Smaranda, Adrian (1673) | Won 2-1 | +221467 |
| 4standard | 99 | Kreuz, Alexander (1849) | Won 2-1 | +241491 |
| 5standard | 54 | Angel, Thomas (1541) | Lost 0-2 | -171474 |
| 6standard | 74 | Mueller, Dominic (1657) | Won 2-0 | +221496 |
| 7standard | 77 | Kowalski, Grzegorz (2180) | Won 2-1 | +281524 |
| 8standard | 27 | Christensen, Oscar (2046) | Lost 0-2 | -91515 |
| 9standard | 302 | Maubert, Noham (1871) | Lost 1-2 | -121503 |
| 10standard | 321 | Farin, Maximilien (1550) | Won 2-0 | +191522 |
| 11standard | 290 | Thiemer, Florian (1583) | Won 2-1 | +191541 |
| 12standard | 257 | Allingham, James (1770) | Won 2-1 | +221563 |
| 13standard | 237 | Mery, Theau (1898) | Won 2-1 | +241587 |
| 14standard | 226 | David, Jonathan (1641) | Won 2-0 | +191606 |
| 15standard | 223 | Sarfis, Gabriel (1744) | Won 2-0 | +211627 |
| top | average opponent: 1770record: 10-3 | new rating: 1627 | ||
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 243 | Mun, Tian Fa (1635) | Lost 0-2 | -141413 |
| 4standard | 375 | Calvaruso, Fabio (1491) | Lost 0-2 | -161397 |
| 5standard | 381 | Patriarca, Joffrey (1783) | Won 2-0 | +241421 |
| 6standard | 281 | Vos, Tristan (1465) | Won 2-0 | +191440 |
| 7standard | 175 | Kunsch, Joe (1575) | Lost 0-2 | -151425 |
| 8standard | 201 | Valkenberg, Anton (1542) | Won 2-1 | +201445 |
| top | average opponent: 1582record: 3-3 | new rating: 1445 | ||
| Grand Prix Bologna 2017 (AKH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 19 | Ahmed, Ben (1413) | Won 2-0 | +161516 |
| 2sealed | 70 | Garcia Marquez, Ivan (1552) | Lost 0-2 | -171499 |
| 3sealed | 644 | Mugnai, Giorgio (1503) | Lost 1-2 | -181481 |
| 4sealed | 702 | Meijers, Wietse (1517) | Lost 1-2 | -171464 |
| 5sealed | 715 | Dondio, Graziano (1464) | Lost 0-2 | -181446 |
| 6sealed | 734 | Chemin, Caroline (1428) | Lost 0-2 | -191427 |
| top | average opponent: 1479record: 1-5 | new rating: 1427 | ||