Ma, Sean
Current rating: 1483
Record: 14-17-2
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 128 | Rilloraza, Leonard (1518) | Lost 0-2 | -171480 |
| 3modern | 672 | Velarde, Alex (1422) | Won 2-1 | +171497 |
| 4modern | 405 | Ochoa, Raul (1540) | Won 2-1 | +181515 |
| 5modern | 233 | Fikkert, Brody (1525) | Lost 1-2 | -171498 |
| 6modern | 270 | Ho, Anthony (1577) | Won 2-1 | +191517 |
| 7modern | 283 | Gomez-Lugo, Aaron (1619) | Lost 0-2 | -161501 |
| 8modern | 325 | Smith, Zachary (1525) | Lost 1-2 | -181483 |
| top | average opponent: 1532record: 3-4 | new rating: 1483 | ||
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 113 | Wang, Nelson (1502) | Won 2-1 | +171552 |
| 3modern | 166 | Ramirez, Jose 297 (1515) | Lost 0-2 | -181534 |
| 4modern | 400 | Garduno, Humberto (1515) | Lost 1-2 | -191515 |
| 5modern | 525 | Burnham, Andrew (1503) | Lost 1-2 | -181497 |
| top | average opponent: 1509record: 1-3 | new rating: 1497 | ||
| Grand Prix Oakland 2019 (modern) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 45 | Cooper, Travis (1654) | Won 2-0 | +221450 |
| 4modern | 19 | Tang, Jeffrey (1775) | Lost 1-2 | -121438 |
| 5modern | 149 | Cracraft, Justen (1584) | Won 2-1 | +211459 |
| 6modern | 77 | [anonymous] | Won 2-1 | +181477 |
| 7modern | 65 | Maxson, Gabriel (1688) | Won 2-0 | +221499 |
| 8modern | 43 | Samuels, Matt (1547) | Lost 1-2 | -171482 |
| 9modern | 59 | Guerrero, Michael (1554) | Won 2-0 | +191501 |
| 10modern | 39 | Sta.Ana, Micol (1706) | Won 2-1 | +221523 |
| 11modern | 38 | Mays, Jacob (1618) | Lost 0-2 | -161507 |
| 12modern | 59 | Dalke, William (1692) | Draw 1-1 | +31510 |
| 13modern | 47 | Bauer, John (1756) | Won 2-0 | +221532 |
| 14modern | 31 | Berenson, Daniel (1630) | Lost 1-2 | -161516 |
| 15modern | 47 | Zell, Susan (1563) | Won 2-0 | +191535 |
| top | average opponent: 1635record: 8-4-1 | new rating: 1535 | ||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 388 | McSpadden, Dusty (1500) | Lost 0-2 | -181466 |
| 2modern | 389 | McCulley, Lance (1362) | Lost 1-2 | -201446 |
| 3modern | 582 | Manabat, Philip (1436) | Lost 0-2 | -181428 |
| top | average opponent: 1433record: 0-3 | new rating: 1428 | ||
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 102 | Yarter, Jeffery (1440) | Won 2-0 | +171517 |
| 2standard | 129 | Giampietro, Jeremy (1522) | Lost 1-2 | -181499 |
| 3standard | 380 | Trojan, Matt (1553) | Lost 0-2 | -171482 |
| 4standard | 612 | Griffin, Christian (1622) | Draw 1-1 | +31485 |
| 5standard | 563 | Oaks, Christian (1487) | Won 2-1 | +181503 |
| 6standard | 431 | Tuttle, Brad (1475) | Lost 0-2 | -191484 |
| top | average opponent: 1516record: 2-3-1 | new rating: 1484 | ||