Jonathan Koh

SGP · 33 yrs · K=20 · Peak 2237 (Jan 2009)

Best performance: 2427 at National Youth T2 Training Tournament 2008(Best of 2008)

OCT26 Rating

2150

Live Rating

2150.0

Change

0.0

Games Played

How live ratings are calculated

Rating History · Classical

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Official classical rating by month

List	Rating	Change
Oct 2026	2150	0
Sep 2026	2150	0
Aug 2026	2150	0
Jul 2026	2150	0
Jun 2026	2150	0
May 2026	2150	0
Apr 2026	2150	0
Mar 2026	2150	0
Feb 2026	2150	0
Jan 2026	2150	0
Dec 2025	2150	0
Nov 2025	2150	0

Classical games since the October list

No rated standard games this rating periodsince the OCT26 list (Oct 1, 2026)

	Last played	Score	TPR
	11th ASEAN+ Age Group Chess Championship - BU20Jun 5, 2010 – Jun 10, 2010TPR 2010	4/9	2010

The live rating moves only when new rated games are played. Until then it matches the published rating.

Event timeline · Classical

28 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

11th ASEAN+ Age Group Chess Championship - BU202010
Jun 2010Swissfederation source
#2 in 2010Score 4/9Opp avg 2097Start 2150
National Junior Gold T1 2010—(2)
Jan – Mar 2010Swissfederation source
Score 1/2Opp avg 2194Start 2189
National Chess Championships for Wong Yip Chong Cup 2010 Open2168
Jan 2010Swissfederation source
Best of 2010Score 4/9Opp avg 2211Start 2189
Commonwealth Open Championships 20092042
Dec 2009Swissfederation source
#4 in 2009Score 3/8Opp avg 2129Start 2150
National Junior Training T4 Gold 20092244
Sep – Nov 2009Swissfederation source
Best of 2009Score 1½/3Opp avg 2244Start 2211
National Junior Training T2 Gold 20092182
Mar – May 2009Swissfederation source
#2 in 2009Score 2½/5Opp avg 2269Start 2150
Intchess 8th Vision Masters IM Tournament 20092083
Mar 2009Round robinfederation source
#3 in 2009Score 2½/10Opp avg 2276Start 2150
National Junior Training T1 Gold 20091426
Jan 2009Swissfederation source
Score 0/3Opp avg 2226Start 2237
KL Open 20082164
Dec 2008Swissfederation source
#5 in 2008Score 4½/9Opp avg 2121Start 2150
5th Singapore Masters International Open Tournament 20082291
Dec 2008Swissfederation source
#4 in 2008Score 4/9Opp avg 2334Start 2150
27th National Age Group Chess Championships 2009 - Open2299
Nov 2008Swissfederation source
#3 in 2008Score 6½/8Opp avg 2048Start 2150
SIN vs MYA Match B 20082047
Sep 2008Individualfederation source
#8 in 2008Score 1½/5Opp avg 2196Start 2150
National Youth Q3 Rating Tournament 20082835
Jun – Aug 2008Swissfederation source
Score 6/6Opp avg 2035Start 2150
4th World Schools Chess Championships 2008 -Open U172158
Jul 2008Swissfederation source
#6 in 2008Score 6½/9Opp avg 2017Start 2124
National Youth T2 Training Tournament 20082427
Mar – May 2008Swissfederation source
Best of 2008Score 3½/4Opp avg 2091Start 2150
Singapore U20 vs Myanmar Chess Match 2 20082378
Apr – May 2008Individualfederation source
#2 in 2008Score 3½/10Opp avg 2488Start 2076
National Youth T1 TrainingTournament 20082050
Jan – Mar 2008Swissfederation source
#7 in 2008Score 4/7Opp avg 1925Start 2090
4th Singapore Masters International Open Tournament 20072063
Dec 2007Swissfederation source
#4 in 2007Score 3/9Opp avg 2188Start 2150
26th National Age Group Championships 2008 Open Category2002
Dec 2007Swissfederation source
#6 in 2007Score 5/8Opp avg 1907Start 2150
National Inter-Clubs Team Championships 2007 National Division2781
Aug 2007Round robinfederation source
Score 5/5Opp avg 1981Start 2150
World Youth Under-16 Olympiad 20072166
Aug 2007Teamfederation source
#2 in 2007Score 3½/8Opp avg 2209Start 2150
World Youth U16 Olympiad 2007 Selection Tournament2211
Jul 2007Swissfederation source
Best of 2007Score 6½/9Opp avg 2018Start 2028
Bishan vs Plaza Match 1—(1)
Mar 2007Individualfederation source
Score ½/1Opp avg 2284Start 2150
59th National Men Championship 20072113
Feb 2007Round robinfederation source
#3 in 2007Score 2½/10Opp avg 2306Start 2150
59th National Men Championship 2007 - Qualifier2058
Jan 2007Swissfederation source
#5 in 2007Score 5/7Opp avg 1933Start 2037

Live ratings projected from the OCT26 published list · Not affiliated with FIDE