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

Item	Main	Standard	Rapid	Blitz
Rating	1238.4	1245	1200	1200
Raw rating	1238.4	1245	1200	1200
Weighted rating	1218.4	1221.1	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	1218.4	1221.1	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	1220.5	1223.7	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
2026-01-01	1238.4	1245	1200	1200
2025-11-30	1238.4	1245	1200	1200
2025-11-01	1238.4	1245	1200	1200
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
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-05-01	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

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	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	Okkers ,J (Jethro)	1	1	425	1	1	425	0	0	0	0	0	0
4	Okkers ,J (Jethro)	1	1134.8	1559.8	1	1156.4	1559.8	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	Cornelius ,L (Laythan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Cornelius ,L (Laythan)	1	1453	1028	1	1385.6	1028	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