Chess South Africa Ratings Database

PLAYER PAGE

Personal

Ontong, G (Granville)

Chess SA id

1080326849

FIDE id

Date of birth

2008-10-06 (U20)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1202.3	1200	1200	1212.8
Raw rating	1202.3	1200	1200	1212.8
Weighted rating	1201.6	1200	1200	1207.6
Weighted performance	0	0	0	0
Floor	705.8	700	700	726.8
K-factor	36	40	40	36
Min/Max rating change allowed	165.3	165.8	165.8	162.8
Highest rating	1205.8 2025-09-01	1199 2025-08-30	1199 2025-08-30	1226.8 2025-09-01
Highest raw rating	1205.8 2025-09-01	1199 2025-08-30	1199 2025-08-30	1226.8 2025-09-01
Highest weighted rating	1201.5 2025-11-30	0 2025-08-30	0 2025-08-30	1206.9 2025-11-30
Highest weighted performance	0 2025-08-30	0 2025-08-30	0 2025-08-30	0 2025-08-30

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1202.3	1200	1200	1212.8
Analysis
Rating	1202.3	1200	1200	1212.8
Raw rating	1202.3	1200	1200	1212.8
Weighted rating	1201.6	1200	1200
Weighted performance	0	0	0
K-factor	36	40	40	36
Floor	705.8	700	700	726.8
Max/Min rating change allowed	165.3	165.8	165.8	162.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1202.3	1200	1200	1212.8
New weighted rating	1201.7	1200	1200	1208.3
New weighted performance	0	0	0	0
Temp new rating	1202.3	1200	1200	1212.8
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1202.3	1200	1200	1212.8
New K-factor	36	36	36	36
New floor	705.8	700	700	726.8

Item	Main	Blitz
	0	0
	10	10
	0	0
	0	0
	0	0
	0	0
History	10	10

Games since
	Main 10	Standard 0		Rapid 0		Blitz 10
Gender	M
Age group	U18
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U18	-1		-1		-1
U18 M	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U18	-1		-1		-1
U18 M	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U18	-1		-1		-1
U18 M	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	446		167		14
M	8		3		1
U18	57		17		5
U18 M	1		1		1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	10	5	50	0	1212.2	1212.2
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	10	5	50	0	1212.2	1212.2
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	10	5	50	0	1212.2	1212.2
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	10	5	50	0	1212.2	1212.2

Date	Main	Standard	Rapid	Blitz
2026-01-01	1202.3	1200	1200	1212.8
2025-11-30	1202.3	1200	1200	1212.8
2025-11-01	1205.8	1200	1200	1226.8
2025-09-30	1205.8	1200	1200	1226.8
2025-09-01	1205.8	1200	1200	1226.8
2025-08-01	1200	1200	1200	1200
2025-07-01	1200	1200	1200	1200
2025-06-01	1200	1200	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Riebeeck Valley LSEN October 2025	2025-10-19	2025-10-19	Blitz	West Coast (WCU)	5	5	2	Yes	Analysis
2	Riebeek Valley Special School LSEN 2025	2025-08-23	2025-08-23	Blitz	West Coast (WCU)	5	5	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 3	type Blitz	result 1	date 2025-08-23	rnd 4	type Blitz	result 1
		Opponent Janse, M (Matthew)				Opponent Pick, D (Diago)
2	1	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 1	type Blitz	result 1	date 2025-08-23	rnd 1	type Blitz	result 1
		Opponent Erasmus, G (Gregory)				Opponent Erasmus, G (Gregory)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 3	type Blitz	result 1	date 2025-08-23	rnd 4	type Blitz	result 1
		Opponent Janse, M (Matthew)				Opponent Pick, D (Diago)
2	1	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 1	type Blitz	result 1	date 2025-08-23	rnd 1	type Blitz	result 1
		Opponent Erasmus, G (Gregory)				Opponent Erasmus, G (Gregory)

#	Games	Start				End
1	2	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 3	type Blitz	result 1	date 2025-08-23	rnd 4	type Blitz	result 1
		Opponent Janse, M (Matthew)				Opponent Pick, D (Diago)
2	1	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 1	type Blitz	result 1	date 2025-08-23	rnd 1	type Blitz	result 1
		Opponent Erasmus, G (Gregory)				Opponent Erasmus, G (Gregory)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 3	type Blitz	result 1	date 2025-08-23	rnd 4	type Blitz	result 1
		Opponent Janse, M (Matthew)				Opponent Pick, D (Diago)
2	1	Tournament Riebeek Valley Special School LSEN 2025				Tournament Riebeek Valley Special School LSEN 2025
		date 2025-08-23	rnd 1	type Blitz	result 1	date 2025-08-23	rnd 1	type Blitz	result 1
		Opponent Erasmus, G (Gregory)				Opponent Erasmus, G (Gregory)

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Daniels ,C (Christopher)	2	0	-425	0	0	0	0	0	0	2	0	-425
1	Daniels ,C (Christopher)	2	1224.3	799.3	0	0	0	0	0	0	2	1274.6	799.3
2	Moses ,L (Lendricko)	2	0	-425	0	0	0	0	0	0	2	0	-425
2	Moses ,L (Lendricko)	2	1238.9	813.9	0	0	0	0	0	0	2	1280.1	813.9
3	Janse ,M (Matthew)	2	2	425	0	0	0	0	0	0	2	2	425
3	Janse ,M (Matthew)	2	1197.8	1622.8	0	0	0	0	0	0	2	1191.4	1622.8
4	Pick ,D (Diago)	2	1	0	0	0	0	0	0	0	2	1	0
4	Pick ,D (Diago)	2	1200.4	1200.4	0	0	0	0	0	0	2	1202.2	1200.4
5	Erasmus ,G (Gregory)	1	1	425	0	0	0	0	0	0	1	1	425
5	Erasmus ,G (Gregory)	1	1200	1625	0	0	0	0	0	0	1	1200	1625
6	Pedro ,L (Logan)	1	1	425	0	0	0	0	0	0	1	1	425
6	Pedro ,L (Logan)	1	1198.8	1623.8	0	0	0	0	0	0	1	1200	1623.8

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Ontong, G (Granville)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms