Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Jager, JJ (Juan)

Chess SA id

109089206

FIDE id

Date of birth

2009-05-13 (U18)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-09-03

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1055.4	1056.5	520	520
Raw rating	1055.4	1056.5	520	520
Weighted rating	1055.4	1056.5	520	520
Weighted performance	604	604.6	0	0
Floor	555.4	556.5	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	203.7	203.4	436.9	436.9
Highest rating	1283.7 2018-05-01	1281.5 2018-05-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1055.4 2024-02-01	1056.5 2024-02-01	520 2024-02-01	520 2024-02-01
Highest weighted rating	1055.4 2024-11-01	1056.5 2024-11-01	520 2024-11-01	520 2024-11-01
Highest weighted performance	1283.7 2018-05-01	1281.5 2018-05-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1055.4	1056.5	520	520
Analysis
Rating	1055.4	1056.5	520	520
Raw rating	1055.4	1056.5	520	520
Weighted rating	1055.4	1056.5	520
Weighted performance	604	604.6	0
K-factor	40	40	40	40
Floor	555.4	556.5	500	500
Max/Min rating change allowed	203.7	203.4	436.9	436.9
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	1055.4	1056.5	520	520
New weighted rating	1055.4	1056.5	520	520
New weighted performance	603.6	604.2	0	0
Temp new rating	1055.4	1056.5	520	520
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1055.4	1056.5	520	520
New K-factor	40	40	40	40
New floor	555.4	556.5	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	10	10
	5	5
History	49	49

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	West Rand (GWR)
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	26	14.5	55.77	49	1165.5	1214.5
Standard	26	14.5	55.77	49	1165.5	1214.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1055.4	1056.5	520	520
2025-09-01	1055.4	1056.5	520	520
2025-08-01	1055.4	1056.5	520	520
2025-07-01	1055.4	1056.5	520	520
2025-06-01	1055.4	1056.5	520	520
2025-05-01	1055.4	1056.5	520	520
2025-04-01	1055.4	1056.5	520	520
2025-03-01	1055.4	1056.5	520	520
2025-02-01	1055.4	1056.5	520	520
2025-01-01	1055.4	1056.5	520	520
2024-12-01	1055.4	1056.5	520	520
2024-11-01	1055.4	1056.5	520	520
2024-10-01	1055.4	1056.5	520	520
2024-09-01	1055.4	1056.5	520	520
2024-08-01	1055.4	1056.5	520	520
2024-07-01	1055.4	1056.5	520	520
2024-06-01	1055.4	1056.5	520	520
2024-08-01	1055.4	1056.5	520	520
2024-04-01	1055.4	1056.5	520	520
2024-03-01	1055.4	1056.5	520	520
2024-02-01	1055.4	1056.5	520	520
2024-01-01	1055.4	1056.5	520	520
2023-12-01	1055.4	1056.5	520	520
2023-11-01	1055.4	1056.5	520	520

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	West Rand Trials 2022 (U14)	2022-09-03	2022-09-03	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
2	2nd West Rand Open 2022 (Juniors)	2022-08-06	2022-08-06	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
3	2021 Gauteng Schools Chess Championships (U13 Boys)	2021-10-16	2021-10-16	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	D2 League Finals 2019 (U11)	2019-08-03	2019-08-03	Standard	West Rand (GWR)	7	6	4	Yes	Analysis
5	D2 Schools Individuals 2018 (U9 Open)	2018-05-19	2018-05-19	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2nd West Rand Open 2022				Tournament West Rand Trials 2022
		date 2022-08-06	rnd 4	type Standard	result 1	date 2022-09-03	rnd 1	type Standard	result 1
		Opponent Molewa, S (Sphiwe)				Opponent Pillay, L (Leeyah)
2	3	Tournament 2021 Gauteng Schools Chess Championships				Tournament 2nd West Rand Open 2022
		date 2021-10-16	rnd 4	type Standard	result 0.5	date 2022-08-06	rnd 1	type Standard	result 1
		Opponent Mokoena, J (Jabu)				Opponent Labuschagne, M (Mila)
3	2	Tournament D2 League Finals 2019				Tournament D2 League Finals 2019
		date 2019-08-03	rnd 6	type Standard	result 1	date 2019-08-03	rnd 7	type Standard	result 1
		Opponent Visser, K (Kayla)				Opponent Lombaard, M (Minette)

#	Games	Start				End
1	3	Tournament 2nd West Rand Open 2022				Tournament West Rand Trials 2022
		date 2022-08-06	rnd 4	type Standard	result 1	date 2022-09-03	rnd 1	type Standard	result 1
		Opponent Molewa, S (Sphiwe)				Opponent Pillay, L (Leeyah)
2	3	Tournament 2021 Gauteng Schools Chess Championships				Tournament 2nd West Rand Open 2022
		date 2021-10-16	rnd 4	type Standard	result 0.5	date 2022-08-06	rnd 1	type Standard	result 1
		Opponent Mokoena, J (Jabu)				Opponent Labuschagne, M (Mila)
3	2	Tournament D2 League Finals 2019				Tournament D2 League Finals 2019
		date 2019-08-03	rnd 6	type Standard	result 1	date 2019-08-03	rnd 7	type Standard	result 1
		Opponent Visser, K (Kayla)				Opponent Lombaard, M (Minette)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2nd West Rand Open 2022				Tournament West Rand Trials 2022
		date 2022-08-06	rnd 4	type Standard	result 1	date 2022-09-03	rnd 1	type Standard	result 1
		Opponent Molewa, S (Sphiwe)				Opponent Pillay, L (Leeyah)
2	2	Tournament 2021 Gauteng Schools Chess Championships				Tournament 2nd West Rand Open 2022
		date 2021-10-16	rnd 5	type Standard	result 1	date 2022-08-06	rnd 1	type Standard	result 1
		Opponent Ngoetjana, R (Rebone)				Opponent Labuschagne, M (Mila)
3	2	Tournament D2 League Finals 2019				Tournament D2 League Finals 2019
		date 2019-08-03	rnd 6	type Standard	result 1	date 2019-08-03	rnd 7	type Standard	result 1
		Opponent Visser, K (Kayla)				Opponent Lombaard, M (Minette)

#	Games	Start				End
1	3	Tournament 2nd West Rand Open 2022				Tournament West Rand Trials 2022
		date 2022-08-06	rnd 4	type Standard	result 1	date 2022-09-03	rnd 1	type Standard	result 1
		Opponent Molewa, S (Sphiwe)				Opponent Pillay, L (Leeyah)
2	2	Tournament 2021 Gauteng Schools Chess Championships				Tournament 2nd West Rand Open 2022
		date 2021-10-16	rnd 5	type Standard	result 1	date 2022-08-06	rnd 1	type Standard	result 1
		Opponent Ngoetjana, R (Rebone)				Opponent Labuschagne, M (Mila)
3	2	Tournament D2 League Finals 2019				Tournament D2 League Finals 2019
		date 2019-08-03	rnd 6	type Standard	result 1	date 2019-08-03	rnd 7	type Standard	result 1
		Opponent Visser, K (Kayla)				Opponent Lombaard, M (Minette)

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	Tshatsheka ,J (Junior)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Tshatsheka ,J (Junior)	2	1252.1	827.1	2	1255.9	827.1	0	0	0	0	0	0
2	Pretorius ,S (Sebastian)	1	1	425	1	1	425	0	0	0	0	0	0
2	Pretorius ,S (Sebastian)	1	1106.4	1531.4	1	1088	1531.4	0	0	0	0	0	0
3	Kampiyau ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Kampiyau ,E (Ethan)	1	1136.6	711.6	1	1125.2	711.6	0	0	0	0	0	0
4	Labuschagne ,M (Mila)	1	1	425	1	1	425	0	0	0	0	0	0
4	Labuschagne ,M (Mila)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Mokoena ,J (Jabu)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Mokoena ,J (Jabu)	1	1184.7	1184.7	1	1181.6	1184.7	0	0	0	0	0	0
6	Saaiman ,HF (Henri Frederik)	1	1	425	1	1	425	0	0	0	0	0	0
6	Saaiman ,HF (Henri Frederik)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Seitei ,N (Neo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Seitei ,N (Neo)	1	1344.9	919.9	1	1342.8	919.9	0	0	0	0	0	0
8	Ngoetjana ,R (Rebone)	1	1	425	1	1	425	0	0	0	0	0	0
8	Ngoetjana ,R (Rebone)	1	1198.7	1623.7	1	1198.4	1623.7	0	0	0	0	0	0
9	Jonker ,R (Reagan)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Jonker ,R (Reagan)	1	1135.5	710.5	1	1186	710.5	0	0	0	0	0	0
10	Skhakhane ,T (Thandolwethu)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Skhakhane ,T (Thandolwethu)	1	1200	775	1	1200	775	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

De Jager, JJ (Juan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms