Gragasin, Billy
Current rating: 1506
Record: 26-29-1
| Regional Championships Singapore 2023 (pioneer) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 76 | Wong, Keith Shao Jye (1500) | Lost 0-2 | -181504 |
| 2pioneer | 43 | Oh, Edmond (1456) | Lost 1-2 | -191485 |
| 3pioneer | 64 | Lee, Weimin (1354) | Won 2-0 | +151500 |
| 4pioneer | 55 | Loh, Ryan (1590) | Won 2-0 | +201520 |
| 5pioneer | 31 | Kurniawan, Samuel Henry (1506) | Won 2-1 | +181538 |
| 6pioneer | 19 | Mendoza, Norbie (1795) | Lost 1-2 | -141524 |
| 7pioneer | 37 | Vergara, Jeremiah Jaime (1528) | Lost 1-2 | -181506 |
| top | average opponent: 1533record: 3-4 | new rating: 1506 | ||
| Regional Championships Clark 2023 (ONE standard) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 13 | Lee, Darien (1500) | Draw 1-1 | 01478 |
| 2standard | 19 | Ong, Zhi (1470) | Lost 1-2 | -181460 |
| 3standard | 32 | Pascual, Alfred Ceazar (1680) | Won 2-0 | +221482 |
| 4standard | 23 | Sy, Alex (1432) | Won 2-0 | +171499 |
| 5standard | 13 | Kositaporn, Nonthakorn (1742) | Lost 0-2 | -131486 |
| 6standard | 21 | Fong, Allan (1461) | Won 2-1 | +171503 |
| 7standard | 15 | Ferries, Ryan (1547) | Won 2-0 | +191522 |
| top | average opponent: 1548record: 4-2-1 | new rating: 1522 | ||
| Regional Championships Singapore 2022 (pioneer) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 8 | Sangpar, Prakit (1455) | Lost 0-2 | -181478 |
| 2pioneer | 51 | Withtayasat, Assawin (1444) | Won 2-1 | +171495 |
| 3pioneer | 23 | Hu, Ken (1549) | Lost 0-2 | -171478 |
| top | average opponent: 1483record: 1-2 | new rating: 1478 | ||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 42 | Sarmiento, John Job (1491) | Won 2-0 | +171530 |
| 2sealed | 110 | Costales, Franz Josef (1567) | Won 2-1 | +191549 |
| 3sealed | 113 | Tanaka, Hironao (1632) | Lost 1-2 | -161533 |
| 4sealed | 219 | Yuen, Steven (1675) | Lost 1-2 | -161517 |
| 5sealed | 237 | Queming, Gu (1485) | Won 2-1 | +181535 |
| 6sealed | 196 | Li, Ang (1474) | Lost 1-2 | -191516 |
| 7sealed | 242 | Wang, Zhi Wei (1451) | Lost 0-2 | -201496 |
| top | average opponent: 1539record: 3-4 | new rating: 1496 | ||
| Grand Prix Manila 2015 (KTK standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 34 | Bondoc, Erickson (1448) | Won 2-1 | +181467 |
| 2standard | 169 | Inocentes, Raymond (1521) | Won 2-0 | +191486 |
| 3standard | 127 | Takahashi, Yuta (1739) | Lost 1-2 | -141472 |
| 4standard | 226 | Gabilo, Alexander (1521) | Won 2-1 | +191491 |
| 5standard | 98 | Barribal, Francis Mark (1536) | Won 2-0 | +191510 |
| 6standard | 38 | M. Ramos jr., Robert (1554) | Lost 0-2 | -171493 |
| 7standard | 145 | Capili, Tristan (1545) | Lost 0-2 | -171476 |
| 8standard | 254 | Balot, Eugene Patrick (1515) | Won 2-1 | +191495 |
| 9standard | 143 | Del Rosario, Simone (1511) | Won 2-0 | +181513 |
| top | average opponent: 1543record: 6-3 | new rating: 1513 | ||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 140 | Khoo, Shawn (1617) | Won 2-0 | +221454 |
| 4sealed | 88 | Rama, Philip Christopher (1725) | Lost 0-2 | -141440 |
| 5sealed | 140 | Li, Chi (1626) | Lost 0-2 | -141426 |
| 6sealed | 157 | Sze, Kevin (1567) | Won 2-0 | +201446 |
| 7sealed | 106 | Won, Dae Hoon (1502) | Won 2-0 | +191465 |
| 8sealed | 73 | Fan, Zheng (1566) | Won 2-1 | +201485 |
| 9sealed | 42 | Kuo, Tzu-Ching (1846) | Won 2-1 | +251510 |
| 10draft | 56 | Kwok Siang, Neo (1642) | Lost 1-2 | -161494 |
| 11draft | 28 | Rama, Philip Christopher (1728) | Lost 0-2 | -141480 |
| 12draft | 55 | Jim, Thomas (1694) | Lost 0-2 | -141466 |
| 13draft | 13 | Lee, Yin Cheung (1515) | Lost 1-2 | -171449 |
| top | average opponent: 1639record: 5-6 | new rating: 1449 | ||
| Grand Prix Shanghai 2011 (M12 limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 84 | Lu, Weikai (1500) | Won 2-1 | +191481 |
| 5sealed | 35 | Gao, Roger (1613) | Lost 0-2 | -161465 |
| 6sealed | 48 | Liu, Xinchang (1558) | Lost 1-2 | -161449 |
| 7sealed | 89 | San, Xing (1536) | Lost 1-2 | -171432 |
| top | average opponent: 1552record: 1-3 | new rating: 1432 | ||
| Grand Prix Taipei 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Horng, Jim (1517) | Lost 0-2 | -181482 |
| 2sealed | 85 | Tu, Wei Ming David (1456) | Lost 0-2 | -181464 |
| 3sealed | 99 | Ip, Chi Wai (1456) | Won 2-0 | +181482 |
| 4sealed | 106 | zhang, cang xian (1465) | Lost 0-2 | -191463 |
| 5sealed | 124 | Ho, Mlug J J (1463) | Won 2-0 | +181481 |
| 6sealed | 95 | Chen, John (1427) | Lost 0-2 | -191462 |
| 7sealed | 95 | Yang, Daly (1465) | Won 2-1 | +181480 |
| 8sealed | 74 | Cheng, Chou Chen (1453) | Lost 1-2 | -181462 |
| top | average opponent: 1463record: 3-5 | new rating: 1462 | ||