Koh, Zhi Sin
Current rating: 1457
Record: 28-32-2
| Grand Prix Kuala Lumpur 2016 (KLD standard) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 20 | Widjaja, Rudy (1443) | Lost 1-2 | -191473 |
| 2standard | 194 | Lee Xin Yi, Pricilla (1480) | Won 2-1 | +181491 |
| 3standard | 252 | Mitra, Brian (1502) | Lost 0-0 | -181473 |
| 4standard | 311 | Mohd Hassan, Mohammad Aidil Azrin (1283) | Lost 0-2 | -211452 |
| 5standard | 292 | Tan, Kiat Cheong (1615) | Lost 1-2 | -151437 |
| 6standard | 307 | Abbasher, Zane (1448) | Won 2-0 | +181455 |
| 7standard | 280 | Magcamit, Benjamin (1551) | Lost 0-2 | -161439 |
| 8standard | 260 | How, Jack Yung Kit (1413) | Won 2-1 | +171456 |
| 9standard | 227 | Yusi, Alexander (1482) | Draw 1-1 | +11457 |
| top | average opponent: 1469record: 3-5-1 | new rating: 1457 | ||
| Grand Prix Singapore 2015 (modern) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 68 | xiong jun justin, quek (1500) | Won 2-0 | +191478 |
| 2modern | 8 | Chon Jeem, Tan (1518) | Won 2-0 | +191497 |
| 3modern | 204 | Yang, Liyan (1651) | Lost 0-2 | -151482 |
| 4modern | 283 | Erianshah Bin Badar, B (1518) | Won 2-1 | +181500 |
| 5modern | 174 | Gan, Huai Shi (1641) | Lost 1-2 | -151485 |
| 6modern | 208 | Supapipat, Nattawin (1607) | Lost 0-2 | -161469 |
| 7modern | 267 | Loh, Mun Kit (1682) | Won 2-1 | +221491 |
| 8modern | 207 | Ismail, Ariff (1516) | Lost 1-2 | -181473 |
| 9modern | 240 | Sutjipto, Andrew Wiraw (1504) | Won 2-1 | +191492 |
| top | average opponent: 1571record: 5-4 | new rating: 1492 | ||
| Grand Prix Kuala Lumpur 2014 (THS limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Low, Eu Jin (1500) | Won 2-1 | +191482 |
| 2sealed | 83 | Ishak, Mohammad Nazri (1369) | Lost 0-2 | -201462 |
| 3sealed | 347 | Heng, Chin (1445) | Lost 1-2 | -181444 |
| 4sealed | 344 | Yau, Ching Man (1446) | Draw 1-1 | 01444 |
| 5sealed | 344 | Wong, Sain Lup (1369) | Lost 1-2 | -201424 |
| 6sealed | 337 | Alegre, Arnold C (1323) | Won 2-1 | +171441 |
| 7sealed | 277 | Soh, Eugene (1481) | Lost 0-2 | -181423 |
| 8sealed | 256 | Thompsom, Elisa (1461) | Won 2-1 | +191442 |
| 9sealed | 212 | Tan, Sze Choon (1419) | Won 2-1 | +171459 |
| top | average opponent: 1424record: 4-4-1 | new rating: 1459 | ||
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 27 | Chanthukshasill, Napha (1500) | Lost 0-2 | -171462 |
| 2sealed | 275 | Wiwatthanapornchai, At (1483) | Won 2-0 | +181480 |
| 3sealed | 255 | Virasitikul, Ackarin (1387) | Lost 0-2 | -201460 |
| 4sealed | 351 | Panuwes, Phitthanut (1481) | Lost 1-2 | -171443 |
| 5sealed | 315 | Yap, Jeffrey (1446) | Won 2-0 | +181461 |
| 6sealed | 247 | Locharahrat, Phumin (1482) | Won 2-0 | +181479 |
| 7sealed | 214 | Yang, Ming Jen (1605) | Lost 1-2 | -161463 |
| 8sealed | 220 | Ting, Chester (1438) | Won 2-1 | +181481 |
| 9sealed | 188 | Kaestner-Frenchman, Ben (1502) | Lost 1-2 | -181463 |
| top | average opponent: 1481record: 4-5 | new rating: 1463 | ||
| Grand Prix Singapore 2013 (RTR limited) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 50 | Hisyam, Muhammad Syahrul (1418) | Lost 1-2 | -191441 |
| 2sealed | 268 | Chan, Mun Kit (1411) | Won 2-1 | +171458 |
| 3sealed | 201 | Poh, Jaime (1498) | Lost 0-2 | -171441 |
| 4sealed | 287 | Baje, Eugene Ernesto W (1543) | Lost 0-2 | -161425 |
| 5sealed | 354 | Mohamed Ali, Mohd Akma (1464) | Won 2-0 | +191444 |
| 6sealed | 263 | Yang, Rick Qing Bin (1486) | Won 2-1 | +181462 |
| 7sealed | 219 | Khor, Wee Yuen Ian (1401) | Won 2-0 | +171479 |
| top | average opponent: 1460record: 4-3 | new rating: 1479 | ||
| Grand Prix Kuala Lumpur 2012 (DKA standard) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 109 | Njohaha, Kervin (1500) | Won 2-1 | +191472 |
| 2standard | 71 | Chiu, Jing Shen Andrew (1500) | Won 2-1 | +191491 |
| 3standard | 11 | Effendi, Yudi (1518) | Lost 0-2 | -181473 |
| 4standard | 165 | Zhang, Nandi (1517) | Won 2-1 | +191492 |
| 5standard | 158 | Fang, Wang (1516) | Lost 1-2 | -171475 |
| 6standard | 156 | Gonzalez, Marco G (1640) | Lost 1-2 | -151460 |
| top | average opponent: 1532record: 3-3 | new rating: 1460 | ||
| Grand Prix Kuala Lumpur 2010 (WWK standard) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | Chin, Chao-Hsia (1541) | Lost 0-2 | -161432 |
| 2standard | 168 | Chia, Shaun Wei Kin (1482) | Won 2-1 | +191451 |
| 3standard | 128 | Gun, Wai Kien (1474) | Lost 1-2 | -181433 |
| 4standard | 221 | Mohd Abdul Rahman, Muh (1480) | Won 2-0 | +191452 |
| 5standard | 152 | Lim, TS (1468) | Won 2-1 | +191471 |
| 6standard | 114 | Fajjaruddin, Aziff (1519) | Lost 0-2 | -181453 |
| top | average opponent: 1494record: 3-3 | new rating: 1453 | ||
| Grand Prix Singapore 2009 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Koh, Chong Yew Edwin (1533) | Lost 0-2 | -171465 |
| 2extended | 124 | Choy, Kevin (1482) | Lost 1-2 | -181447 |
| 3extended | 131 | Samson, Michael Daniel (1498) | Won 2-0 | +191466 |
| 4extended | 139 | Ariestasia, Stefano (1482) | Lost 0-2 | -181448 |
| top | average opponent: 1499record: 1-3 | new rating: 1448 | ||
| Grand Prix Singapore 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 96 | Lee, Seow Chong (1500) | Lost 0-2 | -181482 |
| 3extended | 115 | Yao, Stamford (1482) | Won 2-0 | +181500 |
| 4extended | 136 | Ch'ng, Jonathan (1499) | Lost 1-2 | -181482 |
| top | average opponent: 1494record: 1-2 | new rating: 1482 | ||