Choy, Charles
Current rating: 1480
Record: 13-14
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 24 | Waxer, Nathan (1821) | Lost 0-2 | -131501 |
| 2sealed | 320 | Phillips, Michael (1546) | Lost 1-2 | -171484 |
| 3sealed | 529 | Leyba, Daniel (1466) | Won 2-0 | +181502 |
| 4sealed | 522 | Laster, Chad (1540) | Lost 1-2 | -181484 |
| 5sealed | 513 | Johnson, Michael (1354) | Won 2-0 | +161500 |
| 6sealed | 428 | Ashbrook, Ben (1375) | Lost 1-2 | -201480 |
| top | average opponent: 1517record: 2-4 | new rating: 1480 | ||
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Bianchi, Anthony (1379) | Won 2-0 | +151531 |
| 2sealed | 172 | Hinton, Edgar (1500) | Lost 0-2 | -181513 |
| 3sealed | 447 | Ritrovato, Ryan (1645) | Won 2-0 | +201533 |
| 4sealed | 442 | Snover, Travis (1507) | Lost 0-2 | -181515 |
| 5sealed | 375 | Katara, Manohar (1469) | Won 2-1 | +171532 |
| 6sealed | 252 | Robert, Mauricio (1518) | Lost 0-2 | -181514 |
| top | average opponent: 1503record: 3-3 | new rating: 1514 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 262 | Sutliff, Casey (1584) | Lost 0-2 | -171518 |
| 2sealed | 752 | Portman, Jonah (1483) | Won 2-0 | +181536 |
| 3sealed | 569 | Suriel, Eliazar (1472) | Won 2-0 | +161552 |
| 4sealed | 524 | Villeneuve, Sebastien (1547) | Lost 0-2 | -181534 |
| 5sealed | 646 | Oliver, Paul H (1571) | Won 2-0 | +191553 |
| 6sealed | 442 | Fay, Timothy (1550) | Lost 0-2 | -181535 |
| 7sealed | 452 | Wash, Thomas (1472) | Lost 0-2 | -191516 |
| top | average opponent: 1526record: 3-4 | new rating: 1516 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 576 | Boivin, Eric (1464) | Won 2-1 | +171517 |
| 2sealed | 276 | Scott, Kenny (1518) | Lost 0-2 | -181499 |
| 3sealed | 320 | Braun, Benjamin (1498) | Won 2-0 | +181517 |
| 4sealed | 308 | Wetlaufer, Roscoe (1466) | Lost 0-2 | -191498 |
| 5sealed | 314 | Gelinas-Proulx, Adam (1501) | Won 2-0 | +181516 |
| 6sealed | 27 | Wu, Gavin (1548) | Won 2-1 | +191535 |
| 7sealed | 18 | Carino, Joseph (1557) | Won 2-1 | +181553 |
| 8sealed | 182 | Krasnozon, Jefferey (1549) | Lost 1-2 | -181535 |
| top | average opponent: 1513record: 5-3 | new rating: 1535 | ||