Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Villiers, J (Joa)

Chess SA id

1130314149

FIDE id

Date of birth

2013-05-24 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1215.4

Item	Main	Standard	Rapid	Blitz
Rating	1238.4	1245	1200	1200
Raw rating	1238.4	1245	1200	1200
Weighted rating	1211.1	1212.5	1200	1200
Weighted performance	0	0	0	0
Floor	738.4	745	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	157	155.5	165.8	165.8
Highest rating	1238.4 2025-08-01	1245 2025-08-01	1200 2025-02-01	1200 2025-02-01
Highest raw rating	1238.4 2025-08-01	1245 2025-08-01	1200 2025-02-01	1200 2025-02-01
Highest weighted rating	1229.7 2025-03-01	1229.8 2025-03-01	1200 2025-02-01	1200 2025-02-01
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1238.4	1245	1200	1200
Analysis
Rating	1238.4	1245	1200	1200
Raw rating	1238.4	1245	1200	1200
Weighted rating	1211.1	1212.5	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	738.4	745	700	700
Max/Min rating change allowed	157	155.5	165.8	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	1238.4	1245	1200	1200
New weighted rating	1213.6	1215.5	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1238.4	1245	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1238.4	1245	1200	1200
New K-factor	36	36	36	36
New floor	738.4	745	700	700

Item	Main	Standard
	0	0
	21	21
	0	0
	0	0
	0	0
	0	0
History	21	21

Games since
	Main 21	Standard 21		Rapid 0		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	21	10	47.62	-20.2	1250.6	1230.4
Standard	21	10	47.62	-20.2	1250.6	1230.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	21	10	47.62	-20.2	1250.6	1230.4
Standard	21	10	47.62	-20.2	1250.6	1230.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1238.4	1245	1200	1200
2025-09-01	1238.4	1245	1200	1200
2025-08-01	1238.4	1245	1200	1200
2025-07-01	1202.6	1202.5	1200	1200
2025-06-01	1202.5	1202.4	1200	1200
2025-05-01	1202.4	1202.2	1200	1200
2025-04-01	1201.5	1200.5	1200	1200
2025-03-01	1229.7	1229.8	1200	1200
2025-02-01	1199.2	1198.9	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
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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 Winelands Open 2025 (U14)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Winelands Open 2025 (U14)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Majukumba, M (Misokuhle)				Opponent Venter, D (Danelize)
2	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 3	type Standard	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Okkers, J (Jethro)				Opponent Ol�n, O (Oscar)
3	2	Tournament Marie Delport Memorial 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-01-26	rnd 6	type Standard	result 1	date 2025-02-22	rnd 1	type Standard	result 1
		Opponent Marengoe, B (Berneto)				Opponent Jacobs, C (Conrad)

#	Games	Start				End
1	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Majukumba, M (Misokuhle)				Opponent Venter, D (Danelize)
2	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 3	type Standard	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Okkers, J (Jethro)				Opponent Ol�n, O (Oscar)
3	2	Tournament Marie Delport Memorial 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-01-26	rnd 6	type Standard	result 1	date 2025-02-22	rnd 1	type Standard	result 1
		Opponent Marengoe, B (Berneto)				Opponent Jacobs, C (Conrad)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Majukumba, M (Misokuhle)				Opponent Venter, D (Danelize)
2	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 3	type Standard	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Okkers, J (Jethro)				Opponent Ol�n, O (Oscar)
3	2	Tournament Marie Delport Memorial 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-01-26	rnd 6	type Standard	result 1	date 2025-02-22	rnd 1	type Standard	result 1
		Opponent Marengoe, B (Berneto)				Opponent Jacobs, C (Conrad)

#	Games	Start				End
1	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Majukumba, M (Misokuhle)				Opponent Venter, D (Danelize)
2	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 3	type Standard	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Okkers, J (Jethro)				Opponent Ol�n, O (Oscar)
3	2	Tournament Marie Delport Memorial 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-01-26	rnd 6	type Standard	result 1	date 2025-02-22	rnd 1	type Standard	result 1
		Opponent Marengoe, B (Berneto)				Opponent Jacobs, C (Conrad)

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	Ol�n ,O (Oscar)	1	1	425	1	1	425	0	0	0	0	0	0
1	Ol�n ,O (Oscar)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Balaam ,J (Joshua)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Balaam ,J (Joshua)	1	1146.7	721.7	1	1200	721.7	0	0	0	0	0	0
3	Venter ,D (Danelize)	1	1	425	1	1	425	0	0	0	0	0	0
3	Venter ,D (Danelize)	1	1328.7	1753.7	1	1373.4	1753.7	0	0	0	0	0	0
4	Potgieter ,L (Lian)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Potgieter ,L (Lian)	1	1276.8	851.8	1	1214.3	851.8	0	0	0	0	0	0
5	Kuypers ,P (Parker)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Kuypers ,P (Parker)	1	1469	1044	1	1400.7	1044	0	0	0	0	0	0
6	Makone ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Makone ,E (Ethan)	1	1220.2	795.2	1	1229.9	795.2	0	0	0	0	0	0
7	Okkers ,J (Jethro)	1	1	425	1	1	425	0	0	0	0	0	0
7	Okkers ,J (Jethro)	1	1134.8	1559.8	1	1156.4	1559.8	0	0	0	0	0	0
8	Diedericks ,C (Cayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Diedericks ,C (Cayden)	1	1529.6	1104.6	1	1500.1	1104.6	0	0	0	0	0	0
9	Marengoe ,B (Berneto)	1	1	425	1	1	425	0	0	0	0	0	0
9	Marengoe ,B (Berneto)	1	1047	1472	1	1087.2	1472	0	0	0	0	0	0
10	Holmes ,M (Matthew)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Holmes ,M (Matthew)	1	1553.4	1128.4	1	1535.2	1128.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

De Villiers, J (Joa)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms