Johnson, Mark E
Current rating: 1540
Record: 5-3
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Heisler, Mark (1462) | Lost 1-2 | -191481 |
| 2sealed | 214 | Hellquist, Paul (1505) | Won 2-1 | +191500 |
| 3sealed | 350 | Alexander, Reed (1586) | Won 2-1 | +191519 |
| 4sealed | 191 | Hochman, Sabrina (1456) | Won 2-1 | +171536 |
| 5sealed | 101 | Brugger, Kenneth (1508) | Won 2-0 | +181554 |
| 6sealed | 73 | Suarez, Andres (1814) | Lost 1-2 | -141540 |
| 7sealed | 165 | Villalpando, Mark (1510) | Won 2-0 | +181558 |
| 8sealed | 96 | O'Donnell, Drew (1577) | Lost 1-2 | -181540 |
| average opponent: 1552record: 5-3 | new rating: 1540 | |||