Joo, Yong Chin
Current rating: 1450
Record: 15-18-1
| Grand Prix Kuala Lumpur 2014 (THS limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Thompsom, Elisa (1500) | Won 2-0 | +191462 |
| 2sealed | 137 | Abdul Rahim, Ahmad Hafid (1518) | Won 2-1 | +191481 |
| 3sealed | 69 | Cheong, Fabian (1554) | Lost 1-2 | -161465 |
| 4sealed | 220 | Mohd Zaki, Mohd Nazrul Hafeez (1524) | Won 2-0 | +191484 |
| 5sealed | 187 | Asinas, Rudi Jason (1616) | Lost 0-2 | -161468 |
| 6sealed | 184 | Wang, Shao (1457) | Lost 0-2 | -181450 |
| top | average opponent: 1528record: 3-3 | new rating: 1450 | ||
| Grand Prix Kuala Lumpur 2010 (WWK standard) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 28 | Teoh, Aik Dwin (1500) | Won 2-1 | +191476 |
| 2standard | 59 | Madzlan, Khairul Anwardin (1518) | Lost 1-2 | -181458 |
| 3standard | 157 | Aw Yeong, Weng Kwong (1527) | Lost 0-2 | -161442 |
| 4standard | 215 | Low, Ronald (1481) | Won 2-0 | +181460 |
| 5standard | 154 | Gregorio, Melvin (1504) | Lost 0-2 | -171443 |
| top | average opponent: 1506record: 2-3 | new rating: 1443 | ||
| Grand Prix Kuala Lumpur 2006 (DIS limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 49 | Soh, Ryan Siong Huat (1683) | Lost 0-2 | -151508 |
| 3sealed | 65 | Li, Jie (1597) | Lost 1-2 | -171491 |
| 4sealed | 117 | Pek, Cheng Wee (1576) | Lost 0-2 | -161475 |
| 5sealed | 145 | Ng, Vincent (1466) | Lost 0-2 | -181457 |
| top | average opponent: 1580record: 0-4 | new rating: 1457 | ||
| Grand Prix Singapore 2003 (LGN limited) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3 | Su, Xu (1500) | Won 2-0 | +171570 |
| 2sealed | 42 | Peng, Tie Lun John (1468) | Won 2-1 | +171587 |
| 3sealed | 9 | Aw Yeong, Weng Kwong (1540) | Won 2-0 | +171604 |
| 4sealed | 32 | Tan, Ralph (1537) | Won 2-1 | +161620 |
| 5sealed | 8 | Khoo, Wei Ren (1633) | Lost 0-2 | -171603 |
| 6sealed | 21 | Loh, Ryan (1502) | Won 2-1 | +161619 |
| 7sealed | 21 | Lin, Ming Yi (1572) | ID | 01619 |
| 8draft | 6 | Chan, Bernard (1587) | Draw 1-1 | -11618 |
| 9draft | 16 | Ang, Junyang (1526) | Lost 0-2 | -191599 |
| 10draft | 31 | Lin, Ming Yi (1536) | Lost 0-2 | -201579 |
| 11draft | 28 | Tan, Joseph Boon Kiat (1521) | Lost 0-2 | -191560 |
| 12draft | 11 | Xiao, Dennis (1500) | Lost 0-2 | -191541 |
| 13draft | 29 | yeo, leck koon (1522) | Lost 0-2 | -181523 |
| top | average opponent: 1534record: 5-6-2 | new rating: 1523 | ||
| Grand Prix Kuala Lumpur 2002 (TOR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 71 | Wong, Yuan Kwang (1500) | Won 2-0 | +181518 |
| 2sealed | 29 | Phua, Edwin (1482) | Lost 1-2 | -191499 |
| 3sealed | 72 | Yusoff, Qishin-Tariq (1501) | Won 2-0 | +181517 |
| 4sealed | 41 | Sng, Jason Koon Yeow (1537) | Won 2-1 | +191536 |
| 5sealed | 45 | Ng, Wei San Wesley (1560) | Lost 1-2 | -181518 |
| 6sealed | 43 | Zainuddin, Zulkarnain (1521) | Won 2-1 | +181536 |
| 7sealed | 41 | Yap, Yoke Leong (1488) | Won 2-0 | +171553 |
| top | average opponent: 1513record: 5-2 | new rating: 1553 | ||