Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, EG (Eon Gerhard)

Chess SA id

108086487

FIDE id

Date of birth

2008-05-22 (U18)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-09-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1174.7	1171.5	622	573.6
Raw rating	1174.7	1171.5	622	573.6
Weighted rating	1174.7	1171.4	622	573.6
Weighted performance	631.2	515.4	0	0
Floor	711.2	704.7	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	171.9	172.7	377.8	404.8
Highest rating	1223.9 2019-06-01	1217.3 2019-06-01	1200 2020-01-01	1200 2024-02-01
Highest raw rating	1211.2 2019-07-01	1204.7 2019-07-01	622 2024-02-01	573.6 2024-02-01
Highest weighted rating	1211.2 2024-11-01	1204.7 2024-11-01	622 2024-11-01	573.6 2024-11-01
Highest weighted performance	1223.9 2019-06-01	1217.3 2019-06-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1174.7	1171.5	622	573.6
Analysis
Rating	1174.7	1171.5	622	573.6
Raw rating	1174.7	1171.5	622	573.6
Weighted rating	1174.7	1171.4	622
Weighted performance	631.2	515.4	0
K-factor	36	36	40	40
Floor	711.2	704.7	500	500
Max/Min rating change allowed	171.9	172.7	377.8	404.8
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	1174.7	1171.5	622	573.6
New weighted rating	1174.7	1171.4	622	573.6
New weighted performance	624.4	508.5	0	0
Temp new rating	1174.7	1171.5	622	573.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1174.7	1171.5	622	573.6
New K-factor	36	36	40	40
New floor	711.2	704.7	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	10	5	5
	0	0	0
	0	0	0
History	132	127	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Sedibeng (GSV)
Province	Gauteng (GT)
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	110	53	48.18	-15.5	1085.7	1070.2
Standard	105	51	48.57	-12.1	1079.3	1067.2
Rapid	5	2	40	-85	1219.4	1134.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1174.7	1171.5	622	573.6
2025-09-30	1174.7	1171.5	622	573.6
2025-09-01	1174.7	1171.5	622	573.6
2025-08-01	1174.7	1171.5	622	573.6
2025-07-01	1174.7	1171.5	622	573.6
2025-06-01	1174.7	1171.5	622	573.6
2025-05-01	1174.7	1171.5	622	573.6
2025-04-01	1174.7	1171.5	622	573.6
2025-03-01	1174.7	1171.5	622	573.6
2025-02-01	1174.7	1171.5	622	573.6
2025-01-01	1174.5	1171.3	622	573.6
2024-12-01	1174.5	1171.3	622	573.6
2024-11-01	1174.5	1171.3	622	573.6
2024-10-01	1174.5	1171.3	622	573.6
2024-09-01	1174.5	1171.3	622	573.6
2024-08-01	1174.5	1171.3	622	573.6
2024-07-01	1174.5	1171.3	622	573.6
2024-09-01	1174.5	1171.3	622	573.6
2024-05-01	1174.5	1171.3	622	573.6
2024-04-01	1174.5	1171.3	622	573.6
2024-03-01	1174.5	1171.3	622	573.6
2024-02-01	1174.5	1171.3	622	573.6
2024-01-01	1174.5	1171.3	622	573.6
2023-12-01	1174.5	1171.3	622	573.6

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	Fonteine Chess Open 2023 (C)	2023-09-02	2023-09-02	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
2	VaalPark Primary Open Chess 2023 (B)	2023-06-16	2023-06-16	Rapid	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	Carel`s Open 2020 (C)	2020-02-29	2020-02-29	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	AG Visser 2020 (C)	2020-02-22	2020-02-22	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
5	Midvaal Chess Open 2020 (B)	2020-01-25	2020-01-25	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
6	2019 South African Junior Team Championships (U12D)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	1.5	Yes	Analysis
7	Fonteine Ope 2019 (C)	2019-10-19	2019-10-19	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
8	GE vs GSV Inter Regional 2019 (U12B)	2019-10-26	2019-10-26	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
9	Sedibeng Heritageday Open 2019 (B)	2019-09-24	2019-09-24	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
10	Drie Riviere Open 2019 (D)	2019-06-08	2019-06-08	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
11	Word of Life 2019 (C)	2019-05-11	2019-05-11	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
12	D7 Individuals 2019 (U11 Boys)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
13	Dirk de Koster Chess Open 2019 (D)	2019-04-13	2019-04-13	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
14	AG Visser Skaak Ope 2019 (C)	2019-02-23	2019-02-23	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
15	2019 Heidelberg Open (C)	2019-02-02	2019-02-02	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
16	Fonteine Open 2018 (D)	2018-10-13	2018-10-13	Standard	Sedibeng (GSV)	5	4	2	Yes	Analysis
17	2018 Sedibeng Summer Open (I)	2018-10-20	2018-10-20	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
18	Heidelberg Klub Round Robin 2018 (Team 6)	2018-08-18	2018-08-18	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
19	TST-MSA Tournament 2018 (E)	2018-07-21	2018-07-21	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
20	Broadland`s Knights Chess Open 2018 (D)	2018-06-16	2018-06-16	Standard	Sedibeng (GSV)	5	4	2	Yes	Analysis
21	Heidelberg Skaak Klub 2018 (Team 14)	2018-05-05	2018-05-05	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis
22	D7 Individual 2018 (U11 Boys)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament AG Visser 2020				Tournament Carel`s Open 2020
		date 2020-02-22	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Harmse, H (Heinrich)				Opponent Nyama, C (Cherise)
2	4	Tournament Drie Riviere Open 2019				Tournament Sedibeng Heritageday Open 2019
		date 2019-06-08	rnd 3	type Standard	result 1	date 2019-09-24	rnd 1	type Standard	result 1
		Opponent Tolmay, W (Walroux)				Opponent Walsh, K (Kayleigh)
3	4	Tournament Dirk de Koster Chess Open 2019				Tournament D7 Individuals 2019
		date 2019-04-13	rnd 4	type Standard	result 1	date 2019-05-04	rnd 2	type Standard	result 1
		Opponent Van Biljon, S (Simone)				Opponent Coetzee, J (Jaco)

#	Games	Start				End
1	5	Tournament AG Visser 2020				Tournament Carel`s Open 2020
		date 2020-02-22	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Harmse, H (Heinrich)				Opponent Nyama, C (Cherise)
2	4	Tournament Drie Riviere Open 2019				Tournament Sedibeng Heritageday Open 2019
		date 2019-06-08	rnd 3	type Standard	result 1	date 2019-09-24	rnd 1	type Standard	result 1
		Opponent Tolmay, W (Walroux)				Opponent Walsh, K (Kayleigh)
3	4	Tournament Dirk de Koster Chess Open 2019				Tournament D7 Individuals 2019
		date 2019-04-13	rnd 4	type Standard	result 1	date 2019-05-04	rnd 2	type Standard	result 1
		Opponent Van Biljon, S (Simone)				Opponent Coetzee, J (Jaco)

#	Games	Start				End
1	1	Tournament VaalPark Primary Open Chess 2023				Tournament VaalPark Primary Open Chess 2023
		date 2023-06-16	rnd 3	type Rapid	result 1	date 2023-06-16	rnd 3	type Rapid	result 1
		Opponent Van Der Net, ME (Mariel)				Opponent Van Der Net, ME (Mariel)
2	1	Tournament VaalPark Primary Open Chess 2023				Tournament VaalPark Primary Open Chess 2023
		date 2023-06-16	rnd 1	type Rapid	result 1	date 2023-06-16	rnd 1	type Rapid	result 1
		Opponent Toutountzakis, C (Conrad)				Opponent Toutountzakis, C (Conrad)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Drie Riviere Open 2019				Tournament Sedibeng Heritageday Open 2019
		date 2019-06-08	rnd 3	type Standard	result 1	date 2019-09-24	rnd 1	type Standard	result 1
		Opponent Tolmay, W (Walroux)				Opponent Walsh, K (Kayleigh)
2	4	Tournament Dirk de Koster Chess Open 2019				Tournament D7 Individuals 2019
		date 2019-04-13	rnd 4	type Standard	result 1	date 2019-05-04	rnd 2	type Standard	result 1
		Opponent Van Biljon, S (Simone)				Opponent Coetzee, J (Jaco)
3	3	Tournament AG Visser 2020				Tournament Carel`s Open 2020
		date 2020-02-22	rnd 4	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Harmse, H (Heinrich)				Opponent Dikgwele, K (Kabelo)

#	Games	Start				End
1	4	Tournament Drie Riviere Open 2019				Tournament Sedibeng Heritageday Open 2019
		date 2019-06-08	rnd 3	type Standard	result 1	date 2019-09-24	rnd 1	type Standard	result 1
		Opponent Tolmay, W (Walroux)				Opponent Walsh, K (Kayleigh)
2	4	Tournament Dirk de Koster Chess Open 2019				Tournament D7 Individuals 2019
		date 2019-04-13	rnd 4	type Standard	result 1	date 2019-05-04	rnd 2	type Standard	result 1
		Opponent Van Biljon, S (Simone)				Opponent Coetzee, J (Jaco)
3	3	Tournament AG Visser 2020				Tournament Carel`s Open 2020
		date 2020-02-22	rnd 4	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Harmse, H (Heinrich)				Opponent Dikgwele, K (Kabelo)

#	Games	Start				End
1	1	Tournament VaalPark Primary Open Chess 2023				Tournament VaalPark Primary Open Chess 2023
		date 2023-06-16	rnd 3	type Rapid	result 1	date 2023-06-16	rnd 3	type Rapid	result 1
		Opponent Van Der Net, ME (Mariel)				Opponent Van Der Net, ME (Mariel)
2	1	Tournament VaalPark Primary Open Chess 2023				Tournament VaalPark Primary Open Chess 2023
		date 2023-06-16	rnd 1	type Rapid	result 1	date 2023-06-16	rnd 1	type Rapid	result 1
		Opponent Toutountzakis, C (Conrad)				Opponent Toutountzakis, C (Conrad)

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	Huisamen ,D (De Villiers)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Huisamen ,D (De Villiers)	2	1069.2	644.2	2	1066.8	644.2	0	0	0	0	0	0
2	Van Biljon ,J (Jessica)	2	2	425	2	2	425	0	0	0	0	0	0
2	Van Biljon ,J (Jessica)	2	955.9	1380.9	2	951.7	1380.9	0	0	0	0	0	0
3	Mofokeng ,S (Sihle)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Mofokeng ,S (Sihle)	2	1177.1	752.1	2	1168.4	752.1	0	0	0	0	0	0
4	Meyer ,AF (Anko)	2	2	425	2	2	425	0	0	0	0	0	0
4	Meyer ,AF (Anko)	2	753.3	1178.3	2	762.7	1178.3	0	0	0	0	0	0
5	Naude ,E (Enrique)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Naude ,E (Enrique)	2	1121	696	2	1109.2	696	0	0	0	0	0	0
6	Mittermaier ,G (Gunther)	2	1	0	2	1	0	0	0	0	0	0	0
6	Mittermaier ,G (Gunther)	2	1294.8	1294.8	2	1281	1294.8	0	0	0	0	0	0
7	Pretorius ,PJ (Petrus)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Pretorius ,PJ (Petrus)	2	972.3	547.3	2	957.5	547.3	0	0	0	0	0	0
8	Harmse ,H (Heinrich)	2	1	0	1	1	425	1	0	-425	0	0	0
8	Harmse ,H (Heinrich)	2	1125.7	1125.7	1	1089.2	1550.7	1	1218.4	700.7	0	0	0
9	Van Der Westhuizen ,J (Janu)	1	1	425	1	1	425	0	0	0	0	0	0
9	Van Der Westhuizen ,J (Janu)	1	555.8	980.8	1	564.8	980.8	0	0	0	0	0	0
10	Gough ,R (Rowan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Gough ,R (Rowan)	1	1167.7	1592.7	1	1151.9	1592.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Van Der Westhuizen, EG (Eon Gerhard)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms