Chess South Africa Ratings Database

PLAYER PAGE

Personal

Herklaas, J (Josh)

Chess SA id

1130139480

FIDE id

Date of birth

2013-05-21 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1163.1	1117.1	1242.8	1200
Raw rating	1136	1092.5	1242.8	1200
Weighted rating	1163.1	1117.1	1241.9	1200
Weighted performance	849.2	773.8	0	0
Floor	704.1	700	742.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	181.7	193.3	156	165.8
Highest rating	1204.1 2024-03-01	1200 2018-10-01	1242.8 2024-03-01	1200 2018-10-01
Highest raw rating	1204.1 2024-03-01	1200 2020-01-01	1242.8 2024-03-01	1200 2024-02-01
Highest weighted rating	1204.1 2018-10-01	1200 2018-10-01	1239.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1201.6 2022-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2.4	-2.3	0	0
New rating	1160.8	1114.8	1242.8	1200
Analysis
Rating	1163.1	1117.1	1242.8	1200
Raw rating	1136	1092.5	1242.8	1200
Weighted rating	1163.1	1117.1	1241.9
Weighted performance	849.2	773.8	0
K-factor	36	36	36	36
Floor	704.1	700	742.8	700
Max/Min rating change allowed	181.7	193.3	156	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	1136	1092.5	1242.8	1200
New weighted rating	1160.8	1114.8	1242.4	1200
New weighted performance	842.5	767.4	0	0
Temp new rating	1160.8	1114.8	1242.8	1200
Temp new rating +/-	-2.4	-2.3	0	0
Final new rating +/-	-2.4	-2.3	0	0
New rating	1160.8	1114.8	1242.8	1200
New K-factor	36	36	36	36
New floor	704.1	700	742.8	700

Item	Main	Standard	Rapid
	0	0	0
	2	2	0
	11	5	6
	16	16	0
	27	21	6
	0	0	0
History	56	44	12

Games since
	Main 13	Standard 7		Rapid 6		Blitz 0
Gender	Male
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	2	0	0	-425	1178.4	753.4
Standard	2	0	0	-425	1178.4	753.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	56	22.5	40.18	-83.5	1225.4	1141.9
Standard	44	15.5	35.23	-125.6	1231.7	1106.2
Rapid	12	7	58.33	70.8	1202.3	1273.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1136	1092.5	1242.8	1200
2025-09-30	1166.3	1123.1	1242.8	1200
2025-09-01	1166.3	1123.1	1242.8	1200
2025-08-01	1166.3	1123.1	1242.8	1200
2025-07-01	1166.3	1123.1	1242.8	1200
2025-06-01	1166.3	1123.1	1242.8	1200
2025-05-01	1166.3	1123.1	1242.8	1200
2025-04-01	1166.3	1123.1	1242.8	1200
2025-03-01	1166.3	1123.1	1242.8	1200
2025-02-01	1166.2	1123	1242.8	1200
2025-01-01	1162	1108.4	1242.8	1200
2024-12-01	1162	1108.4	1242.8	1200
2024-11-01	1162	1108.4	1242.8	1200
2024-10-01	1162	1108.4	1242.8	1200
2024-09-01	1162	1108.4	1242.8	1200
2024-08-01	1162	1108.4	1242.8	1200
2024-07-01	1162	1108.4	1242.8	1200
2024-09-01	1162	1108.4	1242.8	1200
2024-05-01	1162	1108.4	1242.8	1200
2024-04-01	1162	1108.4	1242.8	1200
2024-03-01	1204.1	1156	1242.8	1200
2024-02-01	1171.1	1156	1199.2	1200
2024-01-01	1171.1	1156	1199.2	1200
2023-12-01	1171.1	1156	1199.2	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (E)	2025-08-16	2025-08-23	Standard	Cape Town (WCT)	6	2	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (E)	2025-08-16	2025-08-23	Standard	Cape Town (WCT)	6	2	0	Yes	Analysis
2	Cape Winelands Schools - Prestige 2024 (U11 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
3	Cape Winelands Schools - PS Trials 1 2024 (U11 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Western Cape Closed Championship 2023 (U12)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	0	0	No	Analysis
5	Western Cape PS Individuals 2023 (U11 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
6	Cape Winelands Schools Prestige 2023 (U11 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
7	Cape Winelands Schools Chess - Trials 1 2023 (U11 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
8	Drakenstein Pioneers Club Championship 2022 (U14)	2022-09-20	2022-10-11	Standard	Cape Winelands (WCW)	7	5	2.5	Yes	Analysis
9	Western Cape Top Schools 2022 (U11 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	1	Yes	Analysis
10	Stellenbosch Primary 2022 (U9)	2022-08-13	2022-08-13	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
11	Western Cape Schools 2022 (U9 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
12	Cape Winelands Schools 2022 (U9 Boys)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Grobler, D (Dante)				Opponent Milhomem, D (Daniel)
2	3	Tournament Stellenbosch Primary 2022				Tournament Stellenbosch Primary 2022
		date 2022-08-13	rnd 2	type Rapid	result 1	date 2022-08-13	rnd 4	type Rapid	result 1
		Opponent Cloete, D (Daniel)				Opponent Solomons, L (Lucian)
3	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 6	type Rapid	result 1
		Opponent Nagel, A (Alexander)				Opponent Nkuzo, L (Lukhanyo)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Grobler, D (Dante)				Opponent Milhomem, D (Daniel)
2	2	Tournament Drakenstein Pioneers Club Championship 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-10-11	rnd 7	type Standard	result 0.5	date 2023-02-18	rnd 1	type Standard	result 1
		Opponent Adams, M (Meacke)				Opponent Okkers, J (Jethro)
3	2	Tournament Cape Winelands Schools 2022				Tournament Cape Winelands Schools 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 3	type Standard	result 1
		Opponent De Koker, L (Lloyd)				Opponent Terblanche, S (Stefan)

#	Games	Start				End
1	3	Tournament Stellenbosch Primary 2022				Tournament Stellenbosch Primary 2022
		date 2022-08-13	rnd 2	type Rapid	result 1	date 2022-08-13	rnd 4	type Rapid	result 1
		Opponent Cloete, D (Daniel)				Opponent Solomons, L (Lucian)
2	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 6	type Rapid	result 1
		Opponent Nagel, A (Alexander)				Opponent Nkuzo, L (Lukhanyo)
3	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent Titus, R (Rumark)				Opponent Young, G (Gregory)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Grobler, D (Dante)				Opponent Milhomem, D (Daniel)
2	3	Tournament Stellenbosch Primary 2022				Tournament Stellenbosch Primary 2022
		date 2022-08-13	rnd 2	type Rapid	result 1	date 2022-08-13	rnd 4	type Rapid	result 1
		Opponent Cloete, D (Daniel)				Opponent Solomons, L (Lucian)
3	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 6	type Rapid	result 1
		Opponent Nagel, A (Alexander)				Opponent Nkuzo, L (Lukhanyo)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Grobler, D (Dante)				Opponent Milhomem, D (Daniel)
2	2	Tournament Cape Winelands Schools 2022				Tournament Cape Winelands Schools 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 3	type Standard	result 1
		Opponent De Koker, L (Lloyd)				Opponent Terblanche, S (Stefan)
3	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 5	type Standard	result 1	date 2024-03-02	rnd 5	type Standard	result 1
		Opponent Billings, J (Jay-Jean)				Opponent Billings, J (Jay-Jean)

#	Games	Start				End
1	3	Tournament Stellenbosch Primary 2022				Tournament Stellenbosch Primary 2022
		date 2022-08-13	rnd 2	type Rapid	result 1	date 2022-08-13	rnd 4	type Rapid	result 1
		Opponent Cloete, D (Daniel)				Opponent Solomons, L (Lucian)
2	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 6	type Rapid	result 1
		Opponent Nagel, A (Alexander)				Opponent Nkuzo, L (Lukhanyo)
3	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent Titus, R (Rumark)				Opponent Young, G (Gregory)

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	Nagel ,A (Alexander)	3	2	141.7	1	1	425	2	1	0	0	0	0
1	Nagel ,A (Alexander)	3	1224.7	1366.4	1	1214	1649.7	2	1243.9	1224.7	0	0	0
2	Van Tonder ,L (Luhann)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Van Tonder ,L (Luhann)	2	1311.6	886.6	2	1303.6	886.6	0	0	0	0	0	0
3	Milhomem ,D (Daniel)	2	1	0	2	1	0	0	0	0	0	0	0
3	Milhomem ,D (Daniel)	2	1254.6	1254.6	2	1195.9	1254.6	0	0	0	0	0	0
4	Terblanche ,S (Stefan)	2	1	0	1	1	425	1	0	-425	0	0	0
4	Terblanche ,S (Stefan)	2	1201.1	1201.1	1	1200	1626.1	1	1200	776.1	0	0	0
5	Malherbe ,J (Jeevan)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Malherbe ,J (Jeevan)	1	1402.5	977.5	1	1358	977.5	0	0	0	0	0	0
6	Billings ,J (Jay-Jean)	1	1	425	1	1	425	0	0	0	0	0	0
6	Billings ,J (Jay-Jean)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Van Kerwel ,K (Keanu)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Van Kerwel ,K (Keanu)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Arendse ,J (Jaylin)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Arendse ,J (Jaylin)	1	1215.9	790.9	1	1218.4	790.9	0	0	0	0	0	0
9	Jafta ,D (Dehago)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Jafta ,D (Dehago)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Williams ,C (Claron)	1	1	425	1	1	425	0	0	0	0	0	0
10	Williams ,C (Claron)	1	1200.6	1625.6	1	1080.8	1625.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Herklaas, J (Josh)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms