Sumarli, John-Yanto
Current rating: 1464
Record: 2-4
| Grand Prix Singapore 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Lin, Jiahao (1518) | Won 2-1 | +181518 |
| 2sealed | 25 | Wallin, Johnny (1465) | Lost 0-2 | -191499 |
| 3sealed | 67 | Ng, Boon Tat (1500) | Won 2-0 | +181517 |
| 4sealed | 60 | Lee, Wen Yi Julian (1550) | Lost 1-2 | -171500 |
| 5sealed | 67 | Tay, Ek Kiat (1499) | Lost 0-2 | -181482 |
| 6sealed | 89 | Tan, Kelsonn (1482) | Lost 0-2 | -181464 |
| average opponent: 1503record: 2-4 | new rating: 1464 | |||