Beckham, Duncan
Current rating: 1501
Record: 14-15-1
| Grand Prix Sydney 2019 (RNA limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 82 | Neagle, Justin (1526) | Won 2-1 | +181536 |
| 2sealed | 66 | Egan, Isaac (1870) | Lost 0-2 | -121524 |
| 3sealed | 180 | Richards, Darian (1446) | Won 2-1 | +171541 |
| 4sealed | 154 | Kulikov, Mikhail (1415) | Lost 1-2 | -211520 |
| 5sealed | 118 | Shearston, Michael (1466) | Lost 0-2 | -191501 |
| top | average opponent: 1545record: 2-3 | new rating: 1501 | ||
| Grand Prix Brisbane 2017 (modern) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 102 | Mills, Samuel (1499) | Won 2-0 | +171577 |
| 2modern | 36 | Lewis, Tristan (1412) | Lost 0-2 | -211556 |
| 3modern | 242 | Knowles, Jay (1500) | Lost 0-2 | -191537 |
| 4modern | 320 | Fainges, Hannah (1487) | Lost 1-2 | -191518 |
| top | average opponent: 1475record: 1-3 | new rating: 1518 | ||
| Grand Prix Sydney 2016 (EMN limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 284 | Hitchcock, Steven (1485) | Lost 1-2 | -181468 |
| 2sealed | 212 | Yang, Li (1483) | Won 2-0 | +181486 |
| 3sealed | 276 | Lane, Xavier (1501) | Won 2-0 | +181504 |
| 4sealed | 230 | de Jesus Freitas, Marcos Paulo (1791) | Won 2-0 | +231527 |
| 5sealed | 105 | Kite, Paul (1511) | Won 2-0 | +181545 |
| 6sealed | 101 | Golding, Jacob (1668) | Draw 1-1 | +21547 |
| 7sealed | 105 | Ooi, Adrian (1579) | Won 2-0 | +191566 |
| 8sealed | 62 | Nolan, Timothy (1772) | Lost 0-2 | -151551 |
| 9sealed | 120 | Medrano, Adonnys (1805) | Won 2-0 | +231574 |
| 10draft | 121 | Zhang, James (1804) | Lost 0-2 | -141560 |
| top | average opponent: 1640record: 6-3-1 | new rating: 1560 | ||
| Grand Prix Melbourne 2016 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 20 | Wilson, Joshua [AUS] (1517) | Lost 1-2 | -171463 |
| 2modern | 410 | Raymundo, Michael (1453) | Won 2-0 | +181481 |
| 3modern | 284 | Millington, David (1482) | Won 2-0 | +181499 |
| 4modern | 223 | Anthony, Mathew (1523) | Won 2-0 | +181517 |
| 5modern | 76 | Horig, Wilfy (1777) | Lost 0-2 | -131504 |
| 6modern | 281 | Rusling, Daniel (1493) | Lost 1-2 | -181486 |
| top | average opponent: 1541record: 3-3 | new rating: 1486 | ||
| Grand Prix Sydney 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 389 | Armstrong, Matthew (1418) | Won 2-1 | +171517 |
| 2sealed | 179 | Jeffrey, Richard (1517) | Lost 1-2 | -181499 |
| 3sealed | 263 | Gibson, Rebecca (1501) | Won 2-0 | +181517 |
| 4sealed | 227 | Ying, Darryn (1477) | Lost 0-2 | -191498 |
| 5sealed | 233 | Ophel, Joshua (1519) | Lost 1-2 | -181480 |
| top | average opponent: 1486record: 2-3 | new rating: 1480 | ||