O'Donnell, Patrick
Current rating: 1503
Record: 4-4
| Grand Prix Toronto 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 237 | Deruiter, Austin (1500) | Won 2-0 | +181518 |
| 2modern | 263 | Kroll, Steven (1702) | Lost 0-2 | -151503 |
| 3modern | 343 | Roshia, Adam (1431) | Won 2-1 | +171520 |
| 4modern | 178 | Phillips, Cassandra (1653) | Lost 1-2 | -161504 |
| 5modern | 287 | Mead, Phil (1498) | Lost 0-2 | -181486 |
| 6modern | 444 | Whitner, Dennis (1481) | Lost 0-2 | -181468 |
| 7modern | 366 | Farand, Herve (1370) | Won 2-0 | +161484 |
| 8modern | 284 | Pepper, Martin (1490) | Won 2-0 | +191503 |
| average opponent: 1516record: 4-4 | new rating: 1503 | |||