O'Brien, Patrick [IRL]
Current rating: 1457
Record: 9-14-2
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 163 | Hujo, Christopher (1516) | Won 2-1 | +191456 |
| 3pioneer | 347 | Tedeschi, Davide (1626) | Lost 0-2 | -141442 |
| 4pioneer | 413 | Sole Sala, Adria (1774) | Lost 1-2 | -131429 |
| 5pioneer | 491 | Birtwistle, Louis (1459) | Won 2-1 | +191448 |
| 6pioneer | 393 | Calligaro, Laurent (1694) | Won 2-1 | +221470 |
| 7pioneer | 209 | Van Maaren, Thijs (1733) | Lost 0-2 | -131457 |
| top | average opponent: 1634record: 3-3 | new rating: 1457 | ||
| Grand Prix Barcelona 2019 (modern) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 197 | Alonso Martin, Inigo (1441) | Won 2-1 | +181442 |
| 3modern | 369 | Coutinho, Filipe (1525) | Won 2-0 | +201462 |
| 4modern | 165 | Llamas, Jordi (1558) | Lost 1-2 | -161446 |
| 5modern | 277 | Vefa, Yusuf Kemal (1535) | Won 2-0 | +191465 |
| 6modern | 123 | Belmonte, Jose Maria (1514) | Lost 1-2 | -171448 |
| 7modern | 316 | Relat, Ferran (1682) | Lost 1-2 | -141434 |
| 8modern | 279 | Wroblewski, Florian (1589) | Draw 1-1 | +31437 |
| top | average opponent: 1549record: 3-3-1 | new rating: 1437 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 915 | Lukasik, Matej (1500) | Won 2-1 | +191482 |
| 2sealed | 607 | Mudde, Quinten (1738) | Lost 0-2 | -131469 |
| 3sealed | 984 | Montresor, Fabio (1729) | Lost 0-2 | -141455 |
| 4sealed | 833 | Vesely, Jakub (1479) | Won 2-0 | +191474 |
| 5sealed | 842 | Tuzzolo, Federico (1500) | Draw 1-1 | 01474 |
| 6sealed | 723 | Mollisi, Vincenzo (1495) | Lost 0-2 | -171457 |
| 7sealed | 678 | Hoppe, Sebastian (1615) | Lost 0-2 | -151442 |
| 8sealed | 588 | Tomsu, Jiri (1467) | Lost 0-2 | -181424 |
| top | average opponent: 1565record: 2-5-1 | new rating: 1424 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 327 | Gibadullin, Andrey (1500) | Lost 1-2 | -181482 |
| 2sealed | 428 | Janes, Erik (1483) | Lost 0-2 | -181464 |
| 3sealed | 852 | Lehdonvirta, Vili (1467) | Won 2-1 | +181482 |
| 4sealed | 684 | Klaser, Martin (1451) | Lost 0-2 | -191463 |
| top | average opponent: 1475record: 1-3 | new rating: 1463 | ||