Thatcher, Ian
Current rating: 1455
| Grand Prix Toronto 2018 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 551 | Denno, Maxim (1500) | Won 2-1 | +191502 |
| 2modern | 76 | Wolfe, Matthew (1472) | Won 2-1 | +171519 |
| 3modern | 246 | Hall, Shayne (1574) | Lost 0-2 | -171502 |
| 4modern | 475 | Rosman-Simionescu, Tobias (1767) | Lost 1-2 | -131489 |
| 5modern | 383 | Heine, Jack (1560) | Lost 1-2 | -171472 |
| 6modern | 521 | Little, Dustin (1548) | Lost 0-2 | -171455 |
| top | average opponent: 1570record: 2-4 | new rating: 1455 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 12 | Babin, Jayson (1500) | Lost 0-2 | -191505 |
| 2standard | 421 | Jami, Kaaveh (1465) | Won 2-0 | +171522 |
| 3standard | 525 | Sinopoli, Bradley (1472) | Lost 1-2 | -181504 |
| 4standard | 606 | Barnes, Alexander (1481) | Lost 0-2 | -191485 |
| 5standard | 593 | Nahin, Lutfi Al (1462) | Won 2-0 | +181503 |
| 6standard | 561 | Bujnowski, Cody (1423) | Lost 0-2 | -201483 |
| top | average opponent: 1467record: 2-4 | new rating: 1483 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 520 | Albanese, Joe (1500) | Won 2-1 | +181518 |
| 2standard | 317 | Lewis, Michael S (1664) | Won 2-1 | +211539 |
| 3standard | 191 | Cai, Eric (1532) | Lost 1-2 | -181521 |
| 4standard | 459 | Hadley, Jeff J (1519) | Lost 0-2 | -191502 |
| 5standard | 436 | Trelford, Shawn (1542) | Won 2-0 | +191521 |
| 6standard | 364 | Greig, Lucas (1521) | Won 2-1 | +181539 |
| 7standard | 185 | LeBlanc, Nicholas (1673) | Lost 0-2 | -151524 |
| top | average opponent: 1564record: 4-3 | new rating: 1524 | ||