Williamson, John
Current rating: 1588
Record: 6-1-2
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 425 | Bihlmeyer, Alex (1500) | Draw 1-1 | 01500 |
| 2standard | 373 | Van Oene, Alexander (1500) | Won 2-0 | +181518 |
| 3standard | 285 | Olsen, Ben (1455) | Won 2-0 | +171535 |
| 4standard | 163 | Arledge, Luke (1537) | Draw 1-1 | 01535 |
| 5standard | 288 | Grainger, Mark (1539) | Won 2-1 | +181553 |
| 6standard | 177 | Baker, Bogart (1572) | Won 2-1 | +181571 |
| 7standard | 105 | Patey, Dane (1479) | Won 2-1 | +171588 |
| 8standard | 60 | Robertson, Shawn (1587) | Won 2-0 | +181606 |
| 9standard | 34 | Dorsett, Zachariah (1639) | Lost 1-2 | -181588 |
| average opponent: 1534record: 6-1-2 | new rating: 1588 | |||