Sumarta Mu, Justin
Current rating: 1601
Record: 16-10-1
| Grand Prix Kuala Lumpur 2014 (THS limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 227 | Foo, Xian Ti (1500) | Won 2-1 | +171578 |
| 2sealed | 140 | Ng, Vincent (1583) | Lost 0-2 | -181560 |
| 3sealed | 247 | Lee, Marcus Bing Sian (1353) | Won 2-1 | +141574 |
| 4sealed | 243 | Lee, Christopher [MYS] (1436) | Lost 1-2 | -201554 |
| 5sealed | 257 | Sripongam, Boonyakiet (1436) | Won 2-0 | +151569 |
| 6sealed | 230 | Hee, Austen (1533) | Lost 1-2 | -181551 |
| 7sealed | 252 | Warren, Luis Anthony (1526) | Won 2-1 | +171568 |
| 8sealed | 203 | Madin, Azrin (1429) | Won 2-0 | +161584 |
| 9sealed | 120 | Ho, Eugene Zhi Xian (1523) | Won 2-1 | +171601 |
| top | average opponent: 1480record: 6-3 | new rating: 1601 | ||
| Grand Prix Singapore 2013 (RTR limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 258 | Pang, Clement Kang Wei (1570) | Lost 1-2 | -161485 |
| 2sealed | 300 | Lim, Tian Yu (1482) | Won 2-0 | +171502 |
| 3sealed | 258 | Graham, Aaron [AUS] (1499) | Won 2-0 | +181520 |
| 4sealed | 153 | Liao, Yi-Nan (1624) | Won 2-0 | +201540 |
| 5sealed | 173 | Goh, Jensen (1540) | Lost 1-2 | -181522 |
| 6sealed | 237 | Makuta, Eiji (1449) | Won 2-1 | +171539 |
| 7sealed | 81 | Ismail, Zulkifli (1639) | Won 2-0 | +201559 |
| 8sealed | 50 | Lim, Ernest (1681) | Won 2-0 | +201579 |
| 9sealed | 31 | Tan, Lun Yi (1570) | Lost 0-2 | -181561 |
| top | average opponent: 1561record: 6-3 | new rating: 1561 | ||
| Grand Prix Los Angeles 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 13 | Nikoghosyan, Tsolak (1500) | Won 2-0 | +181518 |
| 2sealed | 109 | Vegso, Brian (1518) | Lost 1-2 | -181500 |
| 3sealed | 129 | Freeman, Lance (1501) | Won 2-1 | +181518 |
| 4sealed | 140 | Sonne, Jonathan (1602) | Lost 0-2 | -171501 |
| top | average opponent: 1530record: 2-2 | new rating: 1501 | ||
| Grand Prix Singapore 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 53 | Gan, Kian Keat Gary (1445) | Draw 1-1 | -11499 |
| 2extended | 42 | Jiang, Yixiang (1482) | Lost 0-2 | -181481 |
| 3extended | 69 | Ng, Luke B S (1517) | Lost 0-2 | -181463 |
| 4extended | 96 | Xiao, Tingxuan Kenneth (1465) | Won 2-1 | +181481 |
| 5extended | 82 | Tiong, Chris (1500) | Won 2-0 | +191500 |
| top | average opponent: 1482record: 2-2-1 | new rating: 1500 | ||