Gertrude, Ronald
Current rating: 1632
Record: 20-16-1
| Grand Prix Atlanta 2018 (modern) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 107 | Patel, Tariq (1958) | Won 2-1 | +241609 |
| 4modern | 180 | Alexander, Zachary (1606) | Won 2-0 | +181627 |
| 5modern | 45 | Jeffries, Adrew (1770) | Lost 1-2 | -151612 |
| 6modern | 142 | Drohberg, Philipp (1737) | Lost 1-2 | -161596 |
| 7modern | 156 | Zakrzewski, Sam (1820) | Won 2-1 | +221618 |
| 8modern | 171 | Davis, Shawn (1724) | Won 2-1 | +201638 |
| 9modern | 116 | Thompson, Vince (1561) | Won 2-1 | +171655 |
| 10modern | 54 | Jerrett, Duncan (1557) | Won 2-0 | +161671 |
| 11modern | 56 | Darby, Wyatt (1989) | Won 2-0 | +241695 |
| 12modern | 31 | Zhou, Zirui (1862) | Lost 1-2 | -151680 |
| 13modern | 62 | Lambert, Doug (1879) | Lost 1-2 | -151665 |
| 14modern | 65 | Bertoncini, Alex (1867) | Lost 1-2 | -141651 |
| 15modern | 80 | Crumpton, Stephen (1580) | Lost 0-2 | -191632 |
| top | average opponent: 1762record: 7-6 | new rating: 1632 | ||
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 251 | Szabo, Matthew (1690) | Won 2-0 | +201552 |
| 2standard | 69 | Mohammed, Riyad (1679) | Won 2-0 | +211573 |
| 3standard | 173 | Caputo, Michael (1592) | Won 2-1 | +181591 |
| 4standard | 64 | Castellanos, Jayme (1547) | Won 2-0 | +171608 |
| 5standard | 65 | Natale, Toby (1735) | Won 2-1 | +211629 |
| 6standard | 38 | Kulik, Lirek (1923) | Lost 1-2 | -131616 |
| 7standard | 28 | Park, Yongil (1676) | Lost 1-2 | -171599 |
| 8standard | 146 | Allen, Garrett (1826) | Lost 1-2 | -141585 |
| top | average opponent: 1709record: 5-3 | new rating: 1585 | ||
| Grand Prix Barcelona 2018 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 11 | Garrido, Juanjo (1516) | Won 2-0 | +191504 |
| 2modern | 54 | Harvey, Dominic (1612) | Won 2-0 | +201524 |
| 3modern | 224 | Farenzena, Alisa (1589) | Won 2-1 | +191543 |
| 4modern | 177 | Lhoste, Nicolas (1584) | Won 2-1 | +191562 |
| 5modern | 62 | Pereira, Bruno (1546) | Lost 0-2 | -191543 |
| 6modern | 78 | Munk, Troels (1767) | Lost 0-2 | -141529 |
| 7modern | 328 | Retuerta, Cristian (1642) | Won 2-1 | +211550 |
| 8modern | 197 | Barcelona, Juan Carlos (1550) | Lost 0-2 | -181532 |
| top | average opponent: 1601record: 5-3 | new rating: 1532 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 607 | Dubedout, Lambert (1500) | Won 2-0 | +181518 |
| 2modern | 467 | Garneau, Alexandre (1399) | Won 2-1 | +161534 |
| 3modern | 38 | Munk, Troels (1765) | Lost 1-2 | -141520 |
| 4modern | 415 | Pedro, Sara (1600) | Won 2-1 | +191539 |
| 5modern | 207 | Strotmeyer, Thomas (1565) | Lost 0-2 | -171522 |
| 6modern | 486 | Alaoui, Ilyas (1501) | Lost 1-2 | -181504 |
| 7modern | 639 | Haas, Mathieu (1498) | Draw 1-1 | -11503 |
| 8modern | 513 | Vezuli, Kozent (1496) | Lost 1-2 | -181485 |
| top | average opponent: 1541record: 3-4-1 | new rating: 1485 | ||