Ketchum, John
Current rating: 1468
Record: 1-3
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 62 | McNeil, William (1578) | Won 2-1 | +191519 |
| 2sealed | 155 | Wilson, Douglas (1660) | Lost 0-2 | -151504 |
| 3sealed | 459 | Almeida Valdes, Jorge (1525) | Lost 0-2 | -181486 |
| 4sealed | 453 | McCord, Bryan (1460) | Lost 1-2 | -181468 |
| average opponent: 1556record: 1-3 | new rating: 1468 | |||