Costello, Max
Current rating: 1432
Record: 5-9
| Grand Prix Brisbane 2017 (modern) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 52 | Dorcas, Nick (1558) | Lost 1-2 | -171468 |
| 2modern | 252 | Wright, Dale (1494) | Won 2-1 | +191487 |
| 3modern | 339 | Kuprys, Pranas (1498) | Lost 1-2 | -181469 |
| 4modern | 389 | Atkinson, Joshua (1489) | Won 2-1 | +181487 |
| 5modern | 321 | Yeoh, Garry (1451) | Lost 0-2 | -181469 |
| 6modern | 282 | Di Zio, Jake (1448) | Lost 1-2 | -191450 |
| 7modern | 321 | Exton, James (1410) | Lost 0-2 | -181432 |
| average opponent: 1478record: 2-5 | new rating: 1432 | |||
| Grand Prix Melbourne 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 357 | Thorn, Bryce (1500) | Lost 1-2 | -181482 |
| 2modern | 397 | Dale, Hayden (1469) | Won 2-0 | +181500 |
| 3modern | 236 | Newey, Liam (1500) | Won 2-0 | +181518 |
| 4modern | 179 | Loy, Samuel (1641) | Won 2-0 | +201538 |
| 5modern | 130 | Hughes, Tim (1638) | Lost 1-2 | -161522 |
| 6modern | 283 | Tilkeridis, Nicolas (1524) | Lost 1-2 | -181504 |
| 7modern | 278 | Sullivan, Thomas [AUS] (1454) | Lost 0-2 | -191485 |
| average opponent: 1532record: 3-4 | new rating: 1485 | |||