Grieco, Piermatteo
Current rating: 1575
Record: 16-12
| Grand Prix Bologna 2019 (legacy) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 321 | Cavard, Mickael (1465) | Won 2-0 | +161582 |
| 2legacy | 173 | Fasanella, Francesco (1471) | Lost 0-1 | -201562 |
| 3legacy | 478 | Gauthier, Fabien (1506) | Won 2-0 | +171579 |
| 4legacy | 436 | Stachorra, Tim (1519) | Lost 1-2 | -191560 |
| 5legacy | 494 | Guerra, Gabriele (1501) | Won 2-0 | +171577 |
| 6legacy | 344 | Pore, Ruben (1518) | Won 2-0 | +171594 |
| 7legacy | 172 | Iacobucci, Eugene (1545) | Lost 0-2 | -191575 |
| top | average opponent: 1504record: 4-3 | new rating: 1575 | ||
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 270 | Van Herreweghe, Gertjan (1542) | Won 2-1 | +191543 |
| 2sealed | 493 | Horak, Lukas (1707) | Won 2-1 | +211564 |
| 3sealed | 68 | Deyerling, Christoph (1686) | Lost 1-2 | -161548 |
| 4sealed | 319 | Hong, Sung-Il (1483) | Won 2-1 | +171565 |
| 5sealed | 149 | Nunn, Richard (1676) | Lost 0-2 | -161549 |
| 6sealed | 321 | De Vries, Floris (1506) | Won 2-1 | +171566 |
| 7sealed | 178 | Lamarque, Harmonie (1495) | Won 2-1 | +171583 |
| 8sealed | 141 | Klumpp, Berthold (1650) | Lost 0-2 | -171566 |
| top | average opponent: 1593record: 5-3 | new rating: 1566 | ||
| Grand Prix Milan 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 27 | Mrklic, Zoran (1415) | Won 2-1 | +171517 |
| 4sealed | 7 | Stefanini, Andrea (1486) | Won 2-1 | +171534 |
| 5sealed | 19 | Berteaux, Julien (1794) | Lost 1-2 | -131521 |
| 6sealed | 83 | Costa, Joao (1477) | Won 2-0 | +171538 |
| 7sealed | 82 | Moscato, Adriano (1729) | Won 2-0 | +221560 |
| 8sealed | 12 | Rosi, Giovanni (1572) | Lost 0-2 | -181542 |
| 9sealed | 90 | Laudati, Pietro (1571) | Lost 1-2 | -181524 |
| top | average opponent: 1578record: 4-3 | new rating: 1524 | ||
| Grand Prix Florence 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 88 | Ducher, Fabien (1505) | Won 2-0 | +181518 |
| 2block | 120 | Bokor, Peter (1436) | Lost 0-1 | -191499 |
| 3block | 98 | Crotta, Massimo (1641) | Lost 0-2 | -161483 |
| 4block | 199 | Schiavo, Gianluca Paolo (1481) | Won 2-1 | +181501 |
| 5block | 167 | Marciano, Giancarlo (1489) | Won 2-0 | +181519 |
| 6block | 123 | Martinek, Pavel (1492) | Lost 0-2 | -191500 |
| top | average opponent: 1508record: 3-3 | new rating: 1500 | ||