Ledesma, Mark
Current rating: 1380
Record: 4-11-1
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 257 | Chan, Wing Kuen Jack (1500) | Lost 0-2 | -171408 |
| 2sealed | 275 | Lee, Ho Yin (1482) | Draw 1-1 | +11409 |
| 3sealed | 361 | Tantono, Dennison (1527) | Lost 1-2 | -161393 |
| 4sealed | 397 | Wong, Sain Lup (1411) | Won 2-1 | +191412 |
| 5sealed | 348 | Li, Li (1456) | Won 2-0 | +191431 |
| 6sealed | 288 | Yau, Hoi Fung (1504) | Lost 0-2 | -171414 |
| 7sealed | 298 | Zhou, Hao Guan (1485) | Lost 1-2 | -171397 |
| 8sealed | 284 | Yip, Cheson (1416) | Lost 0-2 | -171380 |
| average opponent: 1473record: 2-5-1 | new rating: 1380 | |||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 65 | Ohshiba, Atsushi (1505) | Won 2-1 | +181518 |
| 2modern | 252 | Koshiishi, Tadahito (1518) | Lost 0-2 | -181500 |
| 3modern | 549 | Inoue, Takamichi (1484) | Lost 0-2 | -181482 |
| 4modern | 660 | Kanehira, Haruki (1398) | Lost 1-2 | -201462 |
| 5modern | 623 | Hasegawa, Takao (1434) | Lost 0-2 | -181444 |
| 6modern | 573 | Kanaoka, Yoshihiko (1446) | Won 2-0 | +181462 |
| 7modern | 441 | Kugi, Takeshi (1391) | Lost 0-2 | -191443 |
| 8modern | 377 | Torichigai, Noriaki (1447) | Lost 0-2 | -181425 |
| average opponent: 1453record: 2-6 | new rating: 1425 | |||