Osmond, Zachary
Current rating: 1427
| Grand Prix Brisbane 2017 (modern) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1012 | Hill, Corey (1555) | Won 2-0 | +201476 |
| 2modern | 44 | Williams, Jack 7694 (1516) | Lost 1-2 | -171459 |
| 3modern | 281 | Ball, Daniel (1668) | Lost 0-2 | -151444 |
| 4modern | 296 | Olander, Jacob (1434) | Won 2-1 | +181462 |
| 5modern | 292 | Wilson, Daniel [AUS] (1504) | Lost 0-2 | -171445 |
| 6modern | 321 | Kay, Scott (1453) | Lost 1-2 | -181427 |
| top | average opponent: 1522record: 2-4 | new rating: 1427 | ||
| Grand Prix Melbourne 2016 (modern) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 194 | Wu, Brendan (1375) | Lost 1-2 | -191424 |
| 2modern | 404 | Huynh, Vinh (1464) | Won 2-0 | +191443 |
| 3modern | 375 | Ou, Galen (1526) | Won 2-0 | +191462 |
| 4modern | 150 | Walsh, Tyler (1646) | Lost 0-2 | -141448 |
| 5modern | 275 | Ashton, Dylan (1516) | Won 2-1 | +191467 |
| 6modern | 183 | Wong, Nicholas Jonathan (1819) | Lost 0-2 | -121455 |
| 7modern | 356 | Cramp, Mitchell (1504) | Won 2-1 | +191474 |
| 8modern | 186 | Fleming, John (1485) | Lost 0-2 | -181456 |
| top | average opponent: 1542record: 4-4 | new rating: 1456 | ||
| Grand Prix Melbourne 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Feng, Dennis (1453) | Lost 1-2 | -191481 |
| 2standard | 280 | Thomas, Trent (1428) | Lost 1-2 | -191462 |
| 3standard | 365 | Cao, Vincent (1410) | Lost 0-2 | -191443 |
| top | average opponent: 1431record: 0-3 | new rating: 1443 | ||