Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pretorius, J (Joslin)

Chess SA id

104089494

FIDE id

Date of birth

2004-12-20 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-07-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	920.9	882.8	1200	1200
Raw rating	920.9	882.8	1200	1200
Weighted rating	920.9	882.8	1200	1200
Weighted performance	102.5	101.8	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	246.8	260.6	165.8	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	920.9	882.8	1200	1200
Analysis
Rating	920.9	882.8	1200	1200
Raw rating	920.9	882.8	1200	1200
Weighted rating	920.9	882.8	1200
Weighted performance	102.5	101.8	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	246.8	260.6	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	920.9	882.8	1200	1200
New weighted rating	920.9	882.8	1200	1200
New weighted performance	102.2	101.6	0	0
Temp new rating	920.9	882.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	920.9	882.8	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	27	27

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	23	7	30.43	-166.3	899	732.7
Standard	23	7	30.43	-166.3	899	732.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	920.9	882.8	1200	1200
2025-09-01	920.9	882.8	1200	1200
2025-08-01	920.9	882.8	1200	1200
2025-07-01	920.9	882.8	1200	1200
2025-06-01	920.9	882.8	1200	1200
2025-05-01	920.9	882.8	1200	1200
2025-04-01	920.9	882.8	1200	1200
2025-03-01	920.9	882.8	1200	1200
2025-02-01	920.9	882.8	1200	1200
2025-01-01	920.9	882.8	1200	1200
2024-12-01	920.9	882.8	1200	1200
2024-11-01	920.9	882.8	1200	1200
2024-10-01	920.9	882.8	1200	1200
2024-09-01	920.9	882.8	1200	1200
2024-08-01	920.9	882.8	1200	1200
2024-07-01	920.9	882.8	1200	1200
2024-06-01	920.9	882.8	1200	1200
2024-08-01	920.9	882.8	1200	1200
2024-04-01	920.9	882.8	1200	1200
2024-03-01	920.9	882.8	1200	1200
2024-02-01	920.9	882.8	1200	1200
2024-01-01	920.9	882.8	1200	1200
2023-12-01	920.9	882.8	1200	1200
2023-11-01	920.9	882.8	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	Eden Top Schools 2019 (U15)	2019-07-20	2019-07-20	Standard	Eden (WEG)	5	5	2	Yes	Analysis
2	Eden Trials 1 2019 (U16 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	0	0	No	Analysis
3	EDENSC Closed 3 2018 (U16 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	5	1	Yes	Analysis
4	Calitzdorp Ope 2018	2018-05-05	2018-05-05	Standard	Eden (WEG)	5	4	2	Yes	Analysis
5	EDENSC Closed 2 2018 (U16 Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	4	2	Yes	Analysis
6	EDENSC Closed 1 2018 (U16 Boys)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	0	Yes	Analysis

#	Games	Start				End
1	2	Tournament Calitzdorp Ope 2018				Tournament Calitzdorp Ope 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Festus, J (Joshua)				Opponent Apools, C (Chadwick)
2	2	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 2 2018
		date 2018-04-14	rnd 3	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, P (Petrie)				Opponent Carstens, K (Keanan)
3	1	Tournament Eden Top Schools 2019				Tournament Eden Top Schools 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Diemer, A (Adriaan)				Opponent Diemer, A (Adriaan)

#	Games	Start				End
1	2	Tournament Calitzdorp Ope 2018				Tournament Calitzdorp Ope 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Festus, J (Joshua)				Opponent Apools, C (Chadwick)
2	2	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 2 2018
		date 2018-04-14	rnd 3	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, P (Petrie)				Opponent Carstens, K (Keanan)
3	1	Tournament Eden Top Schools 2019				Tournament Eden Top Schools 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Diemer, A (Adriaan)				Opponent Diemer, A (Adriaan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Calitzdorp Ope 2018				Tournament Calitzdorp Ope 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Festus, J (Joshua)				Opponent Apools, C (Chadwick)
2	2	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 2 2018
		date 2018-04-14	rnd 3	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, P (Petrie)				Opponent Carstens, K (Keanan)
3	1	Tournament Eden Top Schools 2019				Tournament Eden Top Schools 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Diemer, A (Adriaan)				Opponent Diemer, A (Adriaan)

#	Games	Start				End
1	2	Tournament Calitzdorp Ope 2018				Tournament Calitzdorp Ope 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Festus, J (Joshua)				Opponent Apools, C (Chadwick)
2	2	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 2 2018
		date 2018-04-14	rnd 3	type Standard	result 1	date 2018-04-14	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, P (Petrie)				Opponent Carstens, K (Keanan)
3	1	Tournament Eden Top Schools 2019				Tournament Eden Top Schools 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Diemer, A (Adriaan)				Opponent Diemer, A (Adriaan)

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	Pieterse ,A (Amelick)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Pieterse ,A (Amelick)	1	829.8	404.8	1	829.2	404.8	0	0	0	0	0	0
2	Mitchell ,K (Kerwin)	1	1	425	1	1	425	0	0	0	0	0	0
2	Mitchell ,K (Kerwin)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Groenewald ,M (Mia)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Groenewald ,M (Mia)	1	513.9	88.9	1	516.8	88.9	0	0	0	0	0	0
4	Plaatjies ,S (Sherwin)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Plaatjies ,S (Sherwin)	1	1134.3	709.3	1	1122.4	709.3	0	0	0	0	0	0
5	Erasmus ,M (Marquin)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Erasmus ,M (Marquin)	1	1032.7	607.7	1	998	607.7	0	0	0	0	0	0
6	Jacobs ,M (Menwill)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Jacobs ,M (Menwill)	1	983	558	1	994.4	558	0	0	0	0	0	0
7	Van Aswegen ,H (Herano)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Van Aswegen ,H (Herano)	1	988.9	563.9	1	982.9	563.9	0	0	0	0	0	0
8	Taute ,C (Clayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Taute ,C (Clayden)	1	1018.7	593.7	1	1019.5	593.7	0	0	0	0	0	0
9	Lewis ,T (Tyler)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Lewis ,T (Tyler)	1	935.6	510.6	1	939.6	510.6	0	0	0	0	0	0
10	Booysen ,A (Ashwin)	1	1	425	1	1	425	0	0	0	0	0	0
10	Booysen ,A (Ashwin)	1	635.4	1060.4	1	639	1060.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Pretorius, J (Joslin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms