Machan, Stephen
Current rating: 1400
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 269 | Boyko, Ivan (1515) | Draw 1-1 | +11450 |
| 2standard | 380 | Kerr, Matthew (1447) | Lost 0-2 | -181432 |
| 3standard | 658 | Corriveau, Maxence (1430) | Lost 1-2 | -181414 |
| 4standard | 709 | Kroll, Steven (1640) | Lost 0-2 | -141400 |
| top | average opponent: 1508record: 0-3-1 | new rating: 1400 | ||
| Grand Prix Ottawa 2014 (KTK limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 320 | Dicaire, Dan (1465) | Draw 1-1 | 01463 |
| 2sealed | 309 | Reiber, Lawrence (1382) | Won 2-0 | +161479 |
| 3sealed | 287 | Maini, Quentin (1597) | Lost 0-2 | -161463 |
| 4sealed | 427 | Pembleton, Barry (1500) | Won 2-0 | +191482 |
| 5sealed | 285 | Stelmack, Andrew (1551) | Lost 1-2 | -171465 |
| 6sealed | 365 | De Azevedo Piovezan, F (1549) | Lost 0-2 | -161449 |
| top | average opponent: 1507record: 2-3-1 | new rating: 1449 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 130 | Crawford, Chas (1500) | Won 2-0 | +181518 |
| 2sealed | 174 | Anderson, Cody 2 (1497) | Lost 1-2 | -181500 |
| 3sealed | 442 | Dunville, James (1447) | Lost 1-2 | -191481 |
| 4sealed | 563 | Prieur, Philippe (1481) | Lost 0-2 | -181463 |
| top | average opponent: 1481record: 1-3 | new rating: 1463 | ||