Da Costa, Marc
Current rating: 1389
Record: 9-17-2
| Grand Prix Stockholm 2018 (modern) | starting rating: 1370 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 391 | Fitzgerald Bellone, Robert (1542) | Won 2-0 | +211391 |
| 2modern | 94 | Rosales Jimenez, Israel (1761) | Draw 1-1 | +71398 |
| 3modern | 278 | Howell, Caedon (1517) | Won 2-1 | +201418 |
| 4modern | 151 | Isaksson, Andreas (1641) | Lost 1-2 | -141404 |
| 5modern | 292 | Pyykkonen, Roope (1547) | Lost 0-2 | -151389 |
| top | average opponent: 1602record: 2-2-1 | new rating: 1389 | ||
| Grand Prix London 2015 (ORI standard) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 646 | Dias, Jorge (1424) | Lost 1-2 | -181403 |
| 2standard | 877 | van de Moosdijk, Ruth (1342) | Lost 0-2 | -191384 |
| 3standard | 1056 | Rumack, Aj (1464) | Lost 0-2 | -171367 |
| 4standard | 945 | Green, Aidan (1476) | Won 2-1 | +201387 |
| 5standard | 1005 | White, Karl-Heinz (1459) | Lost 1-2 | -171370 |
| top | average opponent: 1433record: 1-4 | new rating: 1370 | ||
| Grand Prix Singapore 2015 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 331 | Aziz, Ain Jereme (1480) | Lost 0-2 | -171429 |
| 2modern | 406 | Lim, Edmund (1439) | Lost 0-2 | -181411 |
| 3modern | 468 | Pradipta Abhisatya, Na (1465) | Won 2-1 | +191430 |
| 4modern | 389 | Mohd Johari, Mohd Johan Jefri (1462) | Draw 1-1 | +11431 |
| 5modern | 435 | CARO RABE, CHRISTINE (1481) | Won 2-0 | +191450 |
| 6modern | 331 | Zhu, Yulu (1502) | Won 2-0 | +191469 |
| 7modern | 237 | Hung, Hsun Hao (1718) | Lost 0-2 | -141455 |
| 8modern | 262 | Joseph B. Fontanilla, (1497) | Lost 1-2 | -171438 |
| 9modern | 261 | Goh Yuan Feng, Wi (1483) | Lost 0-2 | -171421 |
| top | average opponent: 1503record: 3-5-1 | new rating: 1421 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 490 | Tainsh, Edward (1500) | Lost 1-2 | -181482 |
| 2block | 384 | Gibson, Matthew (1483) | Won 2-0 | +181500 |
| 3block | 316 | Stewart, Kalebh (1500) | Lost 1-2 | -181482 |
| 4block | 551 | Whyte, Ailsa (1462) | Lost 0-2 | -181464 |
| 5block | 563 | Greene, Mark (1502) | Lost 0-2 | -181446 |
| 6block | 506 | Ellerby, David (1448) | Lost 1-2 | -181428 |
| 7block | 454 | Gaffney, Oisin (1428) | Lost 1-2 | -181410 |
| 8block | 358 | Braithwaite, Michael (1411) | Won 2-1 | +181428 |
| 9block | 284 | Victorio, Connor Angel (1428) | Won 2-1 | +181446 |
| top | average opponent: 1462record: 3-6 | new rating: 1446 | ||