Chess South Africa Ratings Database

PLAYER PAGE

Personal

Janneker, J (Joel)

Chess SA id

105078013

FIDE id

Date of birth

2005-02-26 (Adult)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1339.9	1307.3	1221.6	1200
Raw rating	1339.9	1307.3	1221.6	1200
Weighted rating	1334.7	1300.2	1221.6	1200
Weighted performance	752.5	0	0	0
Floor	892.5	866.4	721.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	135.9	142.3	160.8	165.8
Highest rating	1430.3 2022-07-01	1493.5 2022-05-01	1221.6 2024-02-01	1200 2018-10-01
Highest raw rating	1392.5 2022-08-01	1366.4 2022-08-01	1221.6 2024-02-01	1200 2024-02-01
Highest weighted rating	1331.3 2025-08-01	1295.6 2025-08-01	1221.6 2025-02-01	1200 2018-10-01
Highest weighted performance	1430.3 2022-07-01	1493.5 2022-05-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1339.9	1307.3	1221.6	1200
Analysis
Rating	1339.9	1307.3	1221.6	1200
Raw rating	1339.9	1307.3	1221.6	1200
Weighted rating	1334.7	1300.2	1221.6
Weighted performance	752.5	0	0
K-factor	36	36	36	36
Floor	892.5	866.4	721.6	700
Max/Min rating change allowed	135.9	142.3	160.8	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	1339.9	1307.3	1221.6	1200
New weighted rating	1335.6	1301.5	1221.6	1200
New weighted performance	745	0	0	0
Temp new rating	1339.9	1307.3	1221.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1339.9	1307.3	1221.6	1200
New K-factor	36	36	36	36
New floor	892.5	866.4	721.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	6	6	0
	0	0	0
	26	21	5
	5	0	5
History	50	27	23

Games since
	Main 6	Standard 6		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	West Coast (WCU)
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	41	23.5	57.32	62.2	1297.1	1359.2
Standard	27	15.5	57.41	63	1325.1	1388
Rapid	14	8	57.14	60.7	1243	1303.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1339.9	1307.3	1221.6	1200
2025-09-30	1339.9	1307.3	1221.6	1200
2025-09-01	1339.9	1307.3	1221.6	1200
2025-08-01	1339.9	1307.3	1221.6	1200
2025-07-01	1339.9	1307.3	1221.6	1200
2025-06-01	1339.9	1307.3	1221.6	1200
2025-05-01	1339.9	1307.3	1221.6	1200
2025-04-01	1339.9	1307.3	1221.6	1200
2025-03-01	1339.9	1307.3	1221.6	1200
2025-02-01	1339.9	1307.3	1221.6	1200
2025-01-01	1339.9	1307.3	1221.6	1200
2024-12-01	1339.9	1307.3	1221.6	1200
2024-11-01	1339.9	1307.3	1221.6	1200
2024-10-01	1339.9	1307.3	1221.6	1200
2024-09-01	1311.5	1268.8	1221.6	1200
2024-08-01	1311.5	1268.8	1221.6	1200
2024-07-01	1311.5	1268.8	1221.6	1200
2024-09-01	1311.5	1268.8	1221.6	1200
2024-05-01	1311.5	1268.8	1221.6	1200
2024-04-01	1311.5	1268.8	1221.6	1200
2024-03-01	1311.5	1268.8	1221.6	1200
2024-02-01	1311.5	1268.8	1221.6	1200
2024-01-01	1311.5	1268.8	1221.6	1200
2023-12-01	1311.5	1268.8	1221.6	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 Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	0	0	No	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	0	0	No	Analysis
2	CT League 2024 (C)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	2	1	Yes	Analysis
3	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	4	2.5	Yes	Analysis
4	Western Cape Top Schools 2022 (U18 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	0	Yes	Analysis
5	Pedro Booyse Top Schools 2022 (U18 Open)	2022-07-23	2022-07-23	Standard	West Coast (WCU)	6	5	4	Yes	Analysis
6	Onder-Weskus Top Skole 2022 (Hoerskool)	2022-06-04	2022-06-04	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
7	Western Cape Schools Chess 2022 (U18 Boys)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	4	Yes	Analysis
8	West Coast Schools Prestige 2022 (U18 Boys)	2022-02-19	2022-02-19	Standard	West Coast (WCU)	6	5	4	Yes	Analysis
9	Lower West Coast 2021 (U18 Boys)	2021-04-10	2021-04-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
10	Back to School Rapid 2020 (Boys)	2020-02-01	2020-02-01	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Western Cape Schools Chess 2022				Tournament Onder-Weskus Top Skole 2022
		date 2022-05-08	rnd 5	type Standard	result 1	date 2022-06-04	rnd 3	type Rapid	result 1
		Opponent Smith, H (Hasan)				Opponent Njokweni, L (Llyabona)
2	3	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-03	rnd 1	type Standard	result 0.5	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Geyser, F (Freek)				Opponent Fourie, R (Ruan)
3	3	Tournament West Coast Schools Prestige 2022				Tournament West Coast Schools Prestige 2022
		date 2022-02-19	rnd 4	type Standard	result 1	date 2022-02-19	rnd 6	type Standard	result 1
		Opponent Hogan, L (Lee)				Opponent Klein, C (Calvin)

#	Games	Start				End
1	4	Tournament Western Cape Schools Chess 2022				Tournament Pedro Booyse Top Schools 2022
		date 2022-05-08	rnd 5	type Standard	result 1	date 2022-07-23	rnd 2	type Standard	result 1
		Opponent Smith, H (Hasan)				Opponent Roesch, S (Samuel)
2	3	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-03	rnd 1	type Standard	result 0.5	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Geyser, F (Freek)				Opponent Fourie, R (Ruan)
3	3	Tournament West Coast Schools Prestige 2022				Tournament West Coast Schools Prestige 2022
		date 2022-02-19	rnd 4	type Standard	result 1	date 2022-02-19	rnd 6	type Standard	result 1
		Opponent Hogan, L (Lee)				Opponent Klein, C (Calvin)

#	Games	Start				End
1	5	Tournament Lower West Coast 2021				Tournament Onder-Weskus Top Skole 2022
		date 2021-04-10	rnd 4	type Rapid	result 1	date 2022-06-04	rnd 3	type Rapid	result 1
		Opponent Abdol, M (Mateo)				Opponent Njokweni, L (Llyabona)
2	2	Tournament Back to School Rapid 2020				Tournament Back to School Rapid 2020
		date 2020-02-01	rnd 3	type Rapid	result 1	date 2020-02-01	rnd 4	type Rapid	result 1
		Opponent Klein, C (Calvin)				Opponent Bester, C (Coenraad)
3	1	Tournament Lower West Coast 2021				Tournament Lower West Coast 2021
		date 2021-04-10	rnd 1	type Rapid	result 1	date 2021-04-10	rnd 1	type Rapid	result 1
		Opponent Klein, I (Irwin)				Opponent Klein, I (Irwin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Western Cape Schools Chess 2022				Tournament Onder-Weskus Top Skole 2022
		date 2022-05-08	rnd 5	type Standard	result 1	date 2022-06-04	rnd 3	type Rapid	result 1
		Opponent Smith, H (Hasan)				Opponent Njokweni, L (Llyabona)
2	3	Tournament West Coast Schools Prestige 2022				Tournament West Coast Schools Prestige 2022
		date 2022-02-19	rnd 4	type Standard	result 1	date 2022-02-19	rnd 6	type Standard	result 1
		Opponent Hogan, L (Lee)				Opponent Klein, C (Calvin)
3	3	Tournament Lower West Coast 2021				Tournament West Coast Schools Prestige 2022
		date 2021-04-10	rnd 4	type Rapid	result 1	date 2022-02-19	rnd 2	type Standard	result 1
		Opponent Abdol, M (Mateo)				Opponent Fillis, J (Jordan)

#	Games	Start				End
1	4	Tournament Western Cape Schools Chess 2022				Tournament Pedro Booyse Top Schools 2022
		date 2022-05-08	rnd 5	type Standard	result 1	date 2022-07-23	rnd 2	type Standard	result 1
		Opponent Smith, H (Hasan)				Opponent Roesch, S (Samuel)
2	3	Tournament West Coast Schools Prestige 2022				Tournament West Coast Schools Prestige 2022
		date 2022-02-19	rnd 4	type Standard	result 1	date 2022-02-19	rnd 6	type Standard	result 1
		Opponent Hogan, L (Lee)				Opponent Klein, C (Calvin)
3	2	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Matthee, C (Connor)				Opponent Fourie, R (Ruan)

#	Games	Start				End
1	5	Tournament Lower West Coast 2021				Tournament Onder-Weskus Top Skole 2022
		date 2021-04-10	rnd 4	type Rapid	result 1	date 2022-06-04	rnd 3	type Rapid	result 1
		Opponent Abdol, M (Mateo)				Opponent Njokweni, L (Llyabona)
2	2	Tournament Back to School Rapid 2020				Tournament Back to School Rapid 2020
		date 2020-02-01	rnd 3	type Rapid	result 1	date 2020-02-01	rnd 4	type Rapid	result 1
		Opponent Klein, C (Calvin)				Opponent Bester, C (Coenraad)
3	1	Tournament Lower West Coast 2021				Tournament Lower West Coast 2021
		date 2021-04-10	rnd 1	type Rapid	result 1	date 2021-04-10	rnd 1	type Rapid	result 1
		Opponent Klein, I (Irwin)				Opponent Klein, I (Irwin)

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	Don ,W (Wian)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Don ,W (Wian)	3	1195	1336.7	3	1177.3	1336.7	0	0	0	0	0	0
2	Njokweni ,L (Llyabona)	3	2	141.7	2	1	0	1	1	425	0	0	0
2	Njokweni ,L (Llyabona)	3	1346	1487.7	2	1319.3	1346	1	1289.8	1771	0	0	0
3	Fillis ,J (Jordan)	1	1	425	1	1	425	0	0	0	0	0	0
3	Fillis ,J (Jordan)	1	1361.8	1786.8	1	1397.4	1786.8	0	0	0	0	0	0
4	Hogan ,L (Lee)	1	1	425	1	1	425	0	0	0	0	0	0
4	Hogan ,L (Lee)	1	1109.1	1534.1	1	1134.8	1534.1	0	0	0	0	0	0
5	Gebu ,S (Sisipho)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Gebu ,S (Sisipho)	1	1302.8	877.8	1	1301.5	877.8	0	0	0	0	0	0
6	Roesch ,S (Samuel)	1	1	425	1	1	425	0	0	0	0	0	0
6	Roesch ,S (Samuel)	1	1310.7	1735.7	1	1330.9	1735.7	0	0	0	0	0	0
7	Klein ,C (Calvin)	1	1	425	1	1	425	0	0	0	0	0	0
7	Klein ,C (Calvin)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Geduld ,C (Connor Seth)	1	1	425	1	1	425	0	0	0	0	0	0
8	Geduld ,C (Connor Seth)	1	1340.7	1765.7	1	1291.1	1765.7	0	0	0	0	0	0
9	Mitchell ,R (Raynard)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mitchell ,R (Raynard)	1	1354	1779	1	1261.6	1779	0	0	0	0	0	0
10	Smith ,H (Hasan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Smith ,H (Hasan)	1	1362.4	1787.4	1	1349.6	1787.4	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

Janneker, J (Joel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms