Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonker, L (Lewanne)

Chess SA id

2140158823

FIDE id

Date of birth

2014-09-03 (U12)

Gender

Female

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1184	1200	1179.5	1200
Raw rating	1184	1200	1179.5	1200
Weighted rating	1168.4	1200	1152.1	1200
Weighted performance	915.6	0	972.1	0
Floor	710.8	700	718.7	700
K-factor	36	36	36	36
Min/Max rating change allowed	169.6	165.8	170.7	165.8
Highest rating	1224.8 2023-07-01	1200 2018-10-01	1294.1 2023-07-01	1200 2018-10-01
Highest raw rating	1210.8 2023-08-01	1200 2024-03-01	1218.7 2023-08-01	1200 2024-03-01
Highest weighted rating	1210.8 2023-08-01	1200 2018-10-01	1218.7 2023-08-01	1200 2018-10-01
Highest weighted performance	1224.8 2023-07-01	1200 2024-03-01	1294.1 2023-07-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1184	1200	1179.5	1200
Analysis
Rating	1184	1200	1179.5	1200
Raw rating	1184	1200	1179.5	1200
Weighted rating	1168.4	1200	1152.1
Weighted performance	915.6	0	972.1
K-factor	36	36	36	36
Floor	710.8	700	718.7	700
Max/Min rating change allowed	169.6	165.8	170.7	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	1184	1200	1179.5	1200
New weighted rating	1169.2	1200	1153.6	1200
New weighted performance	915.3	0	971.7	0
Temp new rating	1184	1200	1179.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1184	1200	1179.5	1200
New K-factor	36	36	36	36
New floor	710.8	700	718.7	700

Item	Main	Rapid
	0	0
	4	4
	10	10
	10	10
	0	0
	0	0
History	24	24

Games since
	Main 14	Standard 0		Rapid 14		Blitz 0
Gender	Female
Age group	U12
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-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	4	2.5	62.5	106.2	1197.4	1303.7
Standard	0	0	0	0	0	0
Rapid	4	2.5	62.5	106.2	1197.4	1303.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	9	37.5	-106.2	1210.2	1104
Standard	0	0	0	0	0	0
Rapid	24	9	37.5	-106.2	1210.2	1104
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1184	1200	1179.5	1200
2025-09-01	1184	1200	1179.5	1200
2025-08-01	1170.5	1200	1154.6	1200
2025-07-01	1170.5	1200	1154.6	1200
2025-06-01	1170.5	1200	1154.6	1200
2025-05-01	1170.5	1200	1154.6	1200
2025-04-01	1170.5	1200	1154.6	1200
2025-03-01	1170.5	1200	1154.6	1200
2025-02-01	1168.4	1200	1151.5	1200
2025-01-01	1128.5	1200	1089.5	1200
2024-12-01	1128.5	1200	1089.5	1200
2024-11-01	1128.5	1200	1089.5	1200
2024-10-01	1128.5	1200	1089.5	1200
2024-09-01	1128.5	1200	1089.5	1200
2024-08-01	1198.1	1200	1197.5	1200
2024-07-01	1198.1	1200	1197.5	1200
2024-06-01	1198.1	1200	1197.5	1200
2024-08-01	1198.1	1200	1197.5	1200
2024-04-01	1198.1	1200	1197.5	1200
2024-03-01	1198.1	1200	1197.5	1200
2024-02-01	1198.1	1200	1197.5	1200
2024-01-01	1198.1	1200	1197.5	1200
2023-12-01	1198.1	1200	1197.5	1200
2023-11-01	1198.1	1200	1197.5	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	Rookies Tournament Secunda 2025 (Girls)	2025-08-08	2025-08-08	Rapid	Gert Sibande (MGS)	5	4	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Rookies Tournament Secunda 2025 (Girls)	2025-08-08	2025-08-08	Rapid	Gert Sibande (MGS)	5	4	2.5	Yes	Analysis
2	Top Schools Gert Sibande 2024 (U11)	2024-08-16	2024-08-16	Rapid	Gert Sibande (MGS)	5	5	0	Yes	Analysis
3	Govan Mbeki 2024 (U11)	2024-08-02	2024-08-02	Rapid	Gert Sibande (MGS)	5	5	1.5	Yes	Analysis
4	Govin Mbeki Teams Chess Tournament 2023 (U9)	2023-08-18	2023-08-18	Rapid	Gert Sibande (MGS)	5	5	2	Yes	Analysis
5	Ho�veldgroep 2023 (O9)	2023-07-28	2023-07-28	Rapid	Gert Sibande (MGS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Mbonano, M (Minenhle Peace)				Opponent Mensah, J (Joanita)
2	3	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 4	type Rapid	result 1
		Opponent Vermeulen, E (Elmarie)				Opponent Sundstrom, L (Luke)
3	2	Tournament Govan Mbeki 2024				Tournament Govan Mbeki 2024
		date 2024-08-02	rnd 4	type Rapid	result 0.5	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Du Plessis, J (Jj)				Opponent Prinsloo, M (Markus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Mbonano, M (Minenhle Peace)				Opponent Mensah, J (Joanita)
2	3	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 4	type Rapid	result 1
		Opponent Vermeulen, E (Elmarie)				Opponent Sundstrom, L (Luke)
3	2	Tournament Govan Mbeki 2024				Tournament Govan Mbeki 2024
		date 2024-08-02	rnd 4	type Rapid	result 0.5	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Du Plessis, J (Jj)				Opponent Prinsloo, M (Markus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 4	type Rapid	result 1
		Opponent Vermeulen, E (Elmarie)				Opponent Sundstrom, L (Luke)
2	1	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 3	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Mensah, J (Joanita)				Opponent Mensah, J (Joanita)
3	1	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 1	type Rapid	result 1
		Opponent Mbonano, M (Minenhle Peace)				Opponent Mbonano, M (Minenhle Peace)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 4	type Rapid	result 1
		Opponent Vermeulen, E (Elmarie)				Opponent Sundstrom, L (Luke)
2	1	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 3	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Mensah, J (Joanita)				Opponent Mensah, J (Joanita)
3	1	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 1	type Rapid	result 1
		Opponent Mbonano, M (Minenhle Peace)				Opponent Mbonano, M (Minenhle Peace)

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	Viljoen ,H (Heindrich)	3	0	-425	0	0	0	3	0	-425	0	0	0
1	Viljoen ,H (Heindrich)	3	1231.8	806.8	0	0	0	3	1249.7	806.8	0	0	0
2	Du Plessis ,J (Jj)	2	0.5	-212.5	0	0	0	2	0.5	-212.5	0	0	0
2	Du Plessis ,J (Jj)	2	1186.9	974.4	0	0	0	2	1203.3	974.4	0	0	0
3	Sikunyana ,N (Nathan)	2	0	-425	0	0	0	2	0	-425	0	0	0
3	Sikunyana ,N (Nathan)	2	1260	835	0	0	0	2	1295.8	835	0	0	0
4	Mahlangu ,A (Amahle)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Mahlangu ,A (Amahle)	1	1289.2	864.2	0	0	0	1	1338.7	864.2	0	0	0
5	Dhladhla ,H (Hleho)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Dhladhla ,H (Hleho)	1	1215.4	790.4	0	0	0	1	1246.4	790.4	0	0	0
6	Lukhozi ,M (Mpilo)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Lukhozi ,M (Mpilo)	1	1189.6	764.6	0	0	0	1	1182.7	764.6	0	0	0
7	Mhlongo ,K (Khabelihle)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Mhlongo ,K (Khabelihle)	1	1209	784	0	0	0	1	1161.6	784	0	0	0
8	Motlogelwa ,T (Tshegofatso)	1	1	425	0	0	0	1	1	425	0	0	0
8	Motlogelwa ,T (Tshegofatso)	1	1229.2	1654.2	0	0	0	1	1249.3	1654.2	0	0	0
9	Prinsloo ,M (Markus)	1	1	425	0	0	0	1	1	425	0	0	0
9	Prinsloo ,M (Markus)	1	1202.1	1627.1	0	0	0	1	1217.3	1627.1	0	0	0
10	Reynders ,T (Tahlia)	1	1	425	0	0	0	1	1	425	0	0	0
10	Reynders ,T (Tahlia)	1	1158.6	1583.6	0	0	0	1	1159.6	1583.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Jonker, L (Lewanne)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms