Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonker, A (Arno)

Chess SA id

1090142342

FIDE id

Date of birth

2009-03-25 (U18)

Gender

Male

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-08-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1250.1	1202.8	1282.9	1200
Raw rating	1250.1	1202.8	1282.9	1200
Weighted rating	1250.1	1202.8	1282.9	1200
Weighted performance	0	0	0	0
Floor	750.1	702.8	782.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.4	165.2	147.3	165.8
Highest rating	1390.6 2022-07-01	1211.8 2022-06-01	1563.3 2022-07-01	1200 2018-10-01
Highest raw rating	1250.1 2024-02-01	1202.8 2024-02-01	1282.9 2024-02-01	1200 2024-02-01
Highest weighted rating	1250.1 2024-08-01	1202.8 2024-06-01	1282.9 2025-02-01	1200 2018-10-01
Highest weighted performance	1390.6 2022-07-01	1211.8 2022-06-01	1563.3 2022-07-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1250.1	1202.8	1282.9	1200
Analysis
Rating	1250.1	1202.8	1282.9	1200
Raw rating	1250.1	1202.8	1282.9	1200
Weighted rating	1250.1	1202.8	1282.9
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	750.1	702.8	782.9	700
Max/Min rating change allowed	154.4	165.2	147.3	165.8
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	1250.1	1202.8	1282.9	1200
New weighted rating	1250.1	1202.8	1282.9	1200
New weighted performance	0	0	0	0
Temp new rating	1250.1	1202.8	1282.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1250.1	1202.8	1282.9	1200
New K-factor	36	36	36	36
New floor	750.1	702.8	782.9	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	15	5	10
	0	0	0
History	15	5	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	15	10	66.67	141.7	1205.4	1347.1
Standard	5	2.5	50	0	1214.7	1214.7
Rapid	10	7.5	75	212.5	1200.8	1413.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1250.1	1202.8	1282.9	1200
2025-09-01	1250.1	1202.8	1282.9	1200
2025-08-01	1250.1	1202.8	1282.9	1200
2025-07-01	1250.1	1202.8	1282.9	1200
2025-06-01	1250.1	1202.8	1282.9	1200
2025-05-01	1250.1	1202.8	1282.9	1200
2025-04-01	1250.1	1202.8	1282.9	1200
2025-03-01	1250.1	1202.8	1282.9	1200
2025-02-01	1250.1	1202.8	1282.9	1200
2025-01-01	1250.1	1202.8	1282.9	1200
2024-12-01	1250.1	1202.8	1282.9	1200
2024-11-01	1250.1	1202.8	1282.9	1200
2024-10-01	1250.1	1202.8	1282.9	1200
2024-09-01	1250.1	1202.8	1282.9	1200
2024-08-01	1250.1	1202.8	1282.9	1200
2024-07-01	1250.1	1202.8	1282.9	1200
2024-06-01	1250.1	1202.8	1282.9	1200
2024-08-01	1250.1	1202.8	1282.9	1200
2024-04-01	1250.1	1202.8	1282.9	1200
2024-03-01	1250.1	1202.8	1282.9	1200
2024-02-01	1250.1	1202.8	1282.9	1200
2024-01-01	1250.1	1202.8	1282.9	1200
2023-12-01	1250.1	1202.8	1282.9	1200
2023-11-01	1250.1	1202.8	1282.9	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	Govan Mbeki Uitspele 2022 (O13)	2022-08-12	2022-08-12	Rapid	Gert Sibande (MGS)	5	5	3	Yes	Analysis
2	Hoeveldgroep 2022 (O13A)	2022-07-29	2022-07-29	Rapid	Gert Sibande (MGS)	5	5	4.5	Yes	Analysis
3	Sparticus 2 2022 (B)	2022-06-17	2022-06-17	Standard	Gert Sibande (MGS)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	8	Tournament Sparticus 2 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-06-17	rnd 5	type Standard	result 1	date 2022-08-12	rnd 2	type Rapid	result 1
		Opponent Weideman, E (Ewan)				Opponent Louwrens, M (Maggie)
2	2	Tournament Sparticus 2 2022				Tournament Sparticus 2 2022
		date 2022-06-17	rnd 2	type Standard	result 0.5	date 2022-06-17	rnd 3	type Standard	result 1
		Opponent Reynders, R (Reinhardt)				Opponent Cornelissen, X (Xander)
3	1	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 5	type Rapid	result 1	date 2022-08-12	rnd 5	type Rapid	result 1
		Opponent Dumas, J (Jj)				Opponent Dumas, J (Jj)

#	Games	Start				End
1	2	Tournament Sparticus 2 2022				Tournament Sparticus 2 2022
		date 2022-06-17	rnd 2	type Standard	result 0.5	date 2022-06-17	rnd 3	type Standard	result 1
		Opponent Reynders, R (Reinhardt)				Opponent Cornelissen, X (Xander)
2	1	Tournament Sparticus 2 2022				Tournament Sparticus 2 2022
		date 2022-06-17	rnd 5	type Standard	result 1	date 2022-06-17	rnd 5	type Standard	result 1
		Opponent Weideman, E (Ewan)				Opponent Weideman, E (Ewan)

#	Games	Start				End
1	7	Tournament Hoeveldgroep 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-07-29	rnd 1	type Rapid	result 1	date 2022-08-12	rnd 2	type Rapid	result 1
		Opponent Venter, D (Divaldo)				Opponent Louwrens, M (Maggie)
2	1	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 5	type Rapid	result 1	date 2022-08-12	rnd 5	type Rapid	result 1
		Opponent Dumas, J (Jj)				Opponent Dumas, J (Jj)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Sparticus 2 2022				Tournament Hoeveldgroep 2022
		date 2022-06-17	rnd 5	type Standard	result 1	date 2022-07-29	rnd 4	type Rapid	result 1
		Opponent Weideman, E (Ewan)				Opponent Fourie, B (Brandon)
2	2	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 1	type Rapid	result 1	date 2022-08-12	rnd 2	type Rapid	result 1
		Opponent Cornelissen, X (Xander)				Opponent Louwrens, M (Maggie)
3	1	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 5	type Rapid	result 1	date 2022-08-12	rnd 5	type Rapid	result 1
		Opponent Dumas, J (Jj)				Opponent Dumas, J (Jj)

#	Games	Start				End
1	1	Tournament Sparticus 2 2022				Tournament Sparticus 2 2022
		date 2022-06-17	rnd 5	type Standard	result 1	date 2022-06-17	rnd 5	type Standard	result 1
		Opponent Weideman, E (Ewan)				Opponent Weideman, E (Ewan)
2	1	Tournament Sparticus 2 2022				Tournament Sparticus 2 2022
		date 2022-06-17	rnd 3	type Standard	result 1	date 2022-06-17	rnd 3	type Standard	result 1
		Opponent Cornelissen, X (Xander)				Opponent Cornelissen, X (Xander)

#	Games	Start				End
1	4	Tournament Hoeveldgroep 2022				Tournament Hoeveldgroep 2022
		date 2022-07-29	rnd 1	type Rapid	result 1	date 2022-07-29	rnd 4	type Rapid	result 1
		Opponent Venter, D (Divaldo)				Opponent Fourie, B (Brandon)
2	2	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 1	type Rapid	result 1	date 2022-08-12	rnd 2	type Rapid	result 1
		Opponent Cornelissen, X (Xander)				Opponent Louwrens, M (Maggie)
3	1	Tournament Govan Mbeki Uitspele 2022				Tournament Govan Mbeki Uitspele 2022
		date 2022-08-12	rnd 5	type Rapid	result 1	date 2022-08-12	rnd 5	type Rapid	result 1
		Opponent Dumas, J (Jj)				Opponent Dumas, J (Jj)

No games found.

#	Games	Start				End

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	Cornelissen ,X (Xander)	2	2	425	1	1	425	1	1	425	0	0	0
1	Cornelissen ,X (Xander)	2	1152.5	1577.5	1	1200	1577.5	1	1140	1577.5	0	0	0
2	Suke ,O (Ofentse)	2	0.5	-212.5	0	0	0	2	0.5	-212.5	0	0	0
2	Suke ,O (Ofentse)	2	1206.5	994	0	0	0	2	1211	994	0	0	0
3	Schoeman ,M (Markis)	2	1	0	0	0	0	2	1	0	0	0	0
3	Schoeman ,M (Markis)	2	1228.4	1228.4	0	0	0	2	1249.4	1228.4	0	0	0
4	Mokoena ,O (Outlwile)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Mokoena ,O (Outlwile)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Dhlamini ,M (Manqoba)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Dhlamini ,M (Manqoba)	1	1248.7	823.7	1	1225.8	823.7	0	0	0	0	0	0
6	Weideman ,E (Ewan)	1	1	425	1	1	425	0	0	0	0	0	0
6	Weideman ,E (Ewan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Reynders ,R (Reinhardt)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Reynders ,R (Reinhardt)	1	1225	1225	1	1200	1225	0	0	0	0	0	0
8	Dumas ,J (Jj)	1	1	425	0	0	0	1	1	425	0	0	0
8	Dumas ,J (Jj)	1	1232.6	1657.6	0	0	0	1	1254.4	1657.6	0	0	0
9	Fourie ,B (Brandon)	1	1	425	0	0	0	1	1	425	0	0	0
9	Fourie ,B (Brandon)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Vermaak ,K (Kobus)	1	1	425	0	0	0	1	1	425	0	0	0
10	Vermaak ,K (Kobus)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Jonker, A (Arno)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms