Chess South Africa Ratings Database

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Personal

Jonker, HD (Hendrik Dawson)

Chess SA id

107076073

FIDE id

Date of birth

2007-05-02 (U20)

Gender

Male

Region

Pixley-ka-Seme (NCP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2021-10-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1283.5	1282.9	731.8	731.8
Raw rating	1283.5	1282.9	731.8	731.8
Weighted rating	1283.5	1282.9	731.8	731.8
Weighted performance	578.8	579.5	0	0
Floor	826.7	834.7	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	147.2	147.3	323.1	323.1
Highest rating	1341.2 2021-04-01	1339.4 2021-04-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1326.7 2021-05-01	1334.7 2021-05-01	731.8 2024-02-01	731.8 2024-02-01
Highest weighted rating	1326.7 2023-02-01	1334.7 2023-01-01	731.8 2024-11-01	731.8 2024-11-01
Highest weighted performance	1341.2 2021-04-01	1339.4 2021-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1283.5	1282.9	731.8	731.8
Analysis
Rating	1283.5	1282.9	731.8	731.8
Raw rating	1283.5	1282.9	731.8	731.8
Weighted rating	1283.5	1282.9	731.8
Weighted performance	578.8	579.5	0
K-factor	36	36	40	40
Floor	826.7	834.7	500	500
Max/Min rating change allowed	147.2	147.3	323.1	323.1
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	1283.5	1282.9	731.8	731.8
New weighted rating	1283.5	1282.9	731.8	731.8
New weighted performance	578.3	579	0	0
Temp new rating	1283.5	1282.9	731.8	731.8
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1283.5	1282.9	731.8	731.8
New K-factor	36	36	40	40
New floor	826.7	834.7	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	20	20
History	123	123

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Pixley-ka-Seme (NCP)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	52	35.5	68.27	155.3	1065.2	1220.5
Standard	52	35.5	68.27	155.3	1065.2	1220.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1283.5	1282.9	731.8	731.8
2025-09-01	1283.5	1282.9	731.8	731.8
2025-08-01	1283.5	1282.9	731.8	731.8
2025-07-01	1283.5	1282.9	731.8	731.8
2025-06-01	1283.5	1282.9	731.8	731.8
2025-05-01	1283.5	1282.9	731.8	731.8
2025-04-01	1283.5	1282.9	731.8	731.8
2025-03-01	1283.5	1282.9	731.8	731.8
2025-02-01	1283.5	1282.9	731.8	731.8
2025-01-01	1283.5	1282.9	731.8	731.8
2024-12-01	1283.5	1282.9	731.8	731.8
2024-11-01	1283.5	1282.9	731.8	731.8
2024-10-01	1283.5	1282.9	731.8	731.8
2024-09-01	1283.5	1282.9	731.8	731.8
2024-08-01	1283.5	1282.9	731.8	731.8
2024-07-01	1283.5	1282.9	731.8	731.8
2024-06-01	1283.5	1282.9	731.8	731.8
2024-08-01	1283.5	1282.9	731.8	731.8
2024-04-01	1283.5	1282.9	731.8	731.8
2024-03-01	1283.5	1282.9	731.8	731.8
2024-02-01	1283.5	1282.9	731.8	731.8
2024-01-01	1283.5	1282.9	731.8	731.8
2023-12-01	1283.5	1282.9	731.8	731.8
2023-11-01	1283.5	1282.9	731.8	731.8

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	NC Open 2021 (B)	2021-10-22	2021-10-23	Standard	Frances Baard (NCF)	5	5	1	Yes	Analysis
2	Pixley Chess Open 2 2021 (A)	2021-04-17	2021-04-17	Standard	Pixley-ka-Seme (NCP)	5	5	4	Yes	Analysis
3	Pixley Chess Open 2021	2021-03-27	2021-03-27	Standard	Pixley-ka-Seme (NCP)	5	5	3.5	Yes	Analysis
4	Northern Cape Open Fundraiser 2021 (C)	2021-03-20	2021-03-20	Standard	Frances Baard (NCF)	5	5	5	Yes	Analysis
5	South African Junior Team Championships 2018 (U12B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
6	Northern Cape Closed Chess Championships 2018 (U12 Open)	2018-08-31	2018-09-01	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
7	LDA Open Tournament 2018 (B)	2018-07-21	2018-07-21	Standard	Pixley-ka-Seme (NCP)	5	5	4	Yes	Analysis
8	Oudtshoorn Open 2018	2018-06-29	2018-06-30	Standard	Eden (WEG)	6	0	0	No	Analysis
9	Pixley Schools District Eliminations 2018 (U11)	2018-04-14	2018-04-14	Standard	Pixley-ka-Seme (NCP)	5	5	4	Yes	Analysis
10	Pixley ka Seme Open 2018 (U14)	2018-02-10	2018-02-10	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
11	South African Junior Team Championships 2017 (U12C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	5	3	Yes	Analysis

#	Games	Start				End
1	12	Tournament South African Junior Team Championships 2018				Tournament Pixley Chess Open 2021
		date 2018-12-18	rnd 5	type Standard	result 1	date 2021-03-27	rnd 4	type Standard	result 0.5
		Opponent Erasmus, E (Earl)				Opponent Engelbrecht, B (Benedict)
2	6	Tournament Pixley ka Seme Open 2018				Tournament Pixley Schools District Eliminations 2018
		date 2018-02-10	rnd 4	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Hector, L (Lumishca)				Opponent Breyl, N (Noah)
3	3	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-16	rnd 1	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Steenkamp, C (Christopher)				Opponent Mokubung, P (Paseka)

#	Games	Start				End
1	12	Tournament South African Junior Team Championships 2018				Tournament Pixley Chess Open 2021
		date 2018-12-18	rnd 5	type Standard	result 1	date 2021-03-27	rnd 4	type Standard	result 0.5
		Opponent Erasmus, E (Earl)				Opponent Engelbrecht, B (Benedict)
2	6	Tournament Pixley ka Seme Open 2018				Tournament Pixley Schools District Eliminations 2018
		date 2018-02-10	rnd 4	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Hector, L (Lumishca)				Opponent Breyl, N (Noah)
3	3	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-16	rnd 1	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Steenkamp, C (Christopher)				Opponent Mokubung, P (Paseka)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	9	Tournament South African Junior Team Championships 2018				Tournament Pixley Chess Open 2021
		date 2018-12-20	rnd 7	type Standard	result 1	date 2021-03-27	rnd 3	type Standard	result 1
		Opponent Grobler, E (Etienne)				Opponent Rajabu, P (Prince)
2	6	Tournament Pixley ka Seme Open 2018				Tournament Pixley Schools District Eliminations 2018
		date 2018-02-10	rnd 4	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Hector, L (Lumishca)				Opponent Breyl, N (Noah)
3	3	Tournament LDA Open Tournament 2018				Tournament Northern Cape Closed Chess Championships 2018
		date 2018-07-21	rnd 4	type Standard	result 1	date 2018-08-31	rnd 1	type Standard	result 1
		Opponent Kruger, C (Christoffel)				Opponent Olivier, D (Darius)

#	Games	Start				End
1	9	Tournament South African Junior Team Championships 2018				Tournament Pixley Chess Open 2021
		date 2018-12-20	rnd 7	type Standard	result 1	date 2021-03-27	rnd 3	type Standard	result 1
		Opponent Grobler, E (Etienne)				Opponent Rajabu, P (Prince)
2	6	Tournament Pixley ka Seme Open 2018				Tournament Pixley Schools District Eliminations 2018
		date 2018-02-10	rnd 4	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Hector, L (Lumishca)				Opponent Breyl, N (Noah)
3	3	Tournament LDA Open Tournament 2018				Tournament Northern Cape Closed Chess Championships 2018
		date 2018-07-21	rnd 4	type Standard	result 1	date 2018-08-31	rnd 1	type Standard	result 1
		Opponent Kruger, C (Christoffel)				Opponent Olivier, D (Darius)

No games found.

#	Games	Start				End

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	Kitengye ,A (Armand)	4	2	0	4	2	0	0	0	0	0	0	0
1	Kitengye ,A (Armand)	4	1220.5	1220.5	4	1216.5	1220.5	0	0	0	0	0	0
2	Kitengye ,PE (Patrick Ebondo)	2	1	0	2	1	0	0	0	0	0	0	0
2	Kitengye ,PE (Patrick Ebondo)	2	646.7	646.7	2	677	646.7	0	0	0	0	0	0
3	Kruger ,C (Christoffel)	2	2	425	2	2	425	0	0	0	0	0	0
3	Kruger ,C (Christoffel)	2	845.8	1270.8	2	892	1270.8	0	0	0	0	0	0
4	Grobler ,E (Etienne)	1	1	425	1	1	425	0	0	0	0	0	0
4	Grobler ,E (Etienne)	1	1166	1591	1	1157.7	1591	0	0	0	0	0	0
5	Olivier ,D (Darius)	1	1	425	1	1	425	0	0	0	0	0	0
5	Olivier ,D (Darius)	1	1063.8	1488.8	1	1043.2	1488.8	0	0	0	0	0	0
6	Bartman ,J (Jadey)	1	1	425	1	1	425	0	0	0	0	0	0
6	Bartman ,J (Jadey)	1	1178.6	1603.6	1	1170.9	1603.6	0	0	0	0	0	0
7	Coetzee ,E (Erik)	1	1	425	1	1	425	0	0	0	0	0	0
7	Coetzee ,E (Erik)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Steenkamp ,C (Christopher)	1	1	425	1	1	425	0	0	0	0	0	0
8	Steenkamp ,C (Christopher)	1	924.1	1349.1	1	923.6	1349.1	0	0	0	0	0	0
9	Mouton ,A (Anver)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mouton ,A (Anver)	1	1218.3	1643.3	1	1222.8	1643.3	0	0	0	0	0	0
10	Rajabu ,P (Prince)	1	1	425	1	1	425	0	0	0	0	0	0
10	Rajabu ,P (Prince)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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Personal

Jonker, HD (Hendrik Dawson)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms