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Koh, Charles
Current rating: 1569

Grand Prix Singapore 2017 (XLN limited) starting rating: 1563
round table opponent (rating) result Δrating
1sealed 71 Hoh, Derik (1585) Lost 0-2 -171546
2sealed 143 Gleeson-Payne, Toby (1482) Won 2-0 +161562
3sealed 205 Oomori, Yasutomo (1777) Lost 1-2 -141548
4sealed 228 Chia, Tet Hong (1472) Won 2-0 +171565
5sealed 191 Leung, Victor (1463) Won 2-0 +161581
6sealed 159 Tan, Wee Li (1529) Won 2-1 +171598
7sealed 106 Tse, Felix (2076) Lost 1-2 -101588
8sealed 131 Zhang, Yi 1971 (1540) Lost 0-2 -191569
top average opponent: 1616record: 4-4 new rating: 1569

Grand Prix Singapore 2013 (RTR limited) starting rating: 1510
round table opponent (rating) result Δrating
1sealed 301 Voo, Patrick (1500) Won 2-0 +181528
2sealed 106 Laksmono, Christian (1500) Won 2-0 +181546
3sealed 26 Salazar, Frederick (1742) Won 2-1 +211567
4sealed 53 Soliveres, Roel (1543) Won 2-0 +181585
5sealed 52 Wong, Nicholas Jonathan (1772) Won 2-0 +211606
6sealed 21 Teh, Vincent (1732) Won 2-1 +201626
7sealed 10 Xu, Shiwei (1572) Lost 0-2 -191607
8sealed 41 Lim, Redmond (1665) Won 2-0 +191626
9sealed 21 Chow, Clarence (1457) Lost 0-2 -211605
10draft 18 Leong, Ding Yuan (1941) Lost 1-2 -121593
11draft 56 Ong, Calvin Xuan Qiang (1604) Won 2-1 +181611
12draft 33 Mokhtaruddin, Mohd Hafiz (1673) Lost 0-2 -161595
13draft 32 Sirilertvorakul, Veerapat (1819) Lost 1-2 -141581
15draft 39 Ong, Sze Tat (1611) Lost 0-2 -181563
top average opponent: 1652record: 8-6 new rating: 1563

Grand Prix Singapore 2011 (NPH standard) starting rating: 1524
round table opponent (rating) result Δrating
1standard 114 Sutanto, Hendrew (1427) Won 2-0 +171541
2standard 82 Arsyad, Ahmad (1518) Won 2-1 +171558
3standard 68 Hofmann, Mike (1763) Lost 1-2 -141544
4standard 179 Chai, Royce Ming Huang (1698) Lost 1-2 -151529
5standard 239 Chen, Si Jin (1503) Lost 1-2 -191510
top average opponent: 1582record: 2-3 new rating: 1510

Grand Prix Auckland 2008 (ALA limited) starting rating: 1535
round table opponent (rating) result Δrating
4sealed 9 Steele, Wayne (1467) Won 2-1 +171552
5sealed 9 D'Ambrosio, Loren (1526) Won 2-0 +171569
6sealed 1 Ruel, Olivier (2049) Lost 1-2 -91560
7sealed 20 Combs, Joseph E (1556) ID 01560
8draft 4 D'Ambrosio, Loren (1525) Lost 1-2 -191541
9draft 8 Anderson, Raymond (1555) Lost 1-2 -181523
10draft 7 Kiesanowski, Cody (1489) Lost 1-2 -181505
11draft 21 Richards, Scott (1652) Won 2-0 +201525
12draft 2 Patel, Glenn (1554) Lost 1-2 -171508
13draft 28 Stokes, Keith (1435) Won 2-1 +161524
top average opponent: 1581record: 4-5-1 new rating: 1524

Grand Prix Brisbane 2007 (LRW limited) starting rating: 1597
round table opponent (rating) result Δrating
4sealed 27 Tabet, Basam (1683) Lost 1-2 -171580
5sealed 45 Ward, Matthew [AUS] (1535) Won 2-1 +181598
6sealed 12 Neeman, Jeremy (1729) Lost 0-2 -161582
7sealed 45 Egan, Isaac (1520) Won 2-0 +171599
8draft 22 Kwan, Chris (1708) Lost 0-0 -161583
9draft 22 Saito, Tomoharu (1966) Lost 1-2 -121571
10draft 7 Swannack, Cole (1623) Lost 0-2 -171554
11draft 21 Hampton, Luke (1486) Lost 0-0 -191535
top average opponent: 1656record: 2-6 new rating: 1535

Grand Prix Singapore 2007 (extended) starting rating: 1581
round table opponent (rating) result Δrating
2extended 19 Kang, Gabriel (1566) Won 2-1 +181599
3extended 11 Wang, Tian Poo (1517) Won 2-0 +161615
4extended 16 Fujita, Osamu (1904) Lost 0-2 -121603
5extended 60 Boonvoraset, Sirisak (1486) Won 2-0 +151618
6extended 23 Mokhtaruddin, Mohd Hafiz (1547) Won 2-0 +171635
7extended 16 Francisco, John Paul (1562) Lost 0-2 -191616
8extended 34 Chua, Kim Yong Brian (1562) Lost 1-2 -191597
top average opponent: 1592record: 4-3 new rating: 1597

Grand Prix Sydney 2006 (TSP limited) starting rating: 1500
round table opponent (rating) result Δrating
2sealed 16 Chin Quan, Audrey (1515) Lost 0-2 -181482
3sealed 49 Bruce, Bronwyn (1500) Won 2-1 +181500
4sealed 68 Lee Yeow Hsing, Ivan (1482) Won 2-0 +181518
5sealed 49 Foster, Angus (1483) Won 2-0 +171535
6sealed 30 Van Kalker, Zeke (1501) Won 2-1 +181553
7sealed 20 Bracht, Maximilian (1758) Lost 0-2 -151538
8draft 8 Chetcuti, Vincent (1537) Won 2-0 +181556
9draft 22 Crewe, David (1569) Won 2-0 +191575
10draft 23 Dang, David (1587) Won 2-0 +181593
11draft 29 Neeman, Jeremy (1662) Lost 0-2 -171576
12draft 3 Seck, Ben (1822) Lost 0-2 -131563
13draft 16 Pickering, Peter (1601) Won 2-1 +181581
top average opponent: 1585record: 8-4 new rating: 1581

Grand Prix Melbourne 2005 (extended) starting rating: 1500
round table opponent (rating) result Δrating
1extended 7 Otton, Kieren (1547) Draw 1-1 +11501
2extended 34 Niedelman, Benjamin (1535) Won 2-1 +181519
3extended 19 Lehmann, Andrew (1519) Lost 1-2 -181501
4extended 47 Varga, Andrew (1519) Won 2-0 +191520
5extended 36 Donnelly, Katherine (1504) Lost 1-2 -181502
6extended 43 Hunn, Philip (1497) Won 2-0 +171519
7extended 33 Eyre, Shayne (1428) Lost 0-2 -191500
top average opponent: 1507record: 3-3-1 new rating: 1500