Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grobler, J (Janko)

Chess SA id

1050108859

FIDE id

Date of birth

2005-08-08 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-03-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1258.2	1187.6	1231.6	1200
Raw rating	1258.2	1187.6	1231.6	1200
Weighted rating	1258.2	1187.6	1231.6	1200
Weighted performance	0	0	0	0
Floor	758.2	700	731.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	152.6	168.8	158.5	165.8
Highest rating	1258.2 2024-02-01	1200 2018-10-01	1346.4 2022-03-01	1200 2018-10-01
Highest raw rating	1258.2 2024-02-01	1200 2018-02-01	1231.6 2024-02-01	1200 2024-02-01
Highest weighted rating	1258.2 2024-03-01	1200 2018-10-01	1231.6 2024-03-01	1200 2018-10-01
Highest weighted performance	1246.8 2022-03-01	1200 2018-02-01	1346.4 2022-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1258.2	1187.6	1231.6	1200
Analysis
Rating	1258.2	1187.6	1231.6	1200
Raw rating	1258.2	1187.6	1231.6	1200
Weighted rating	1258.2	1187.6	1231.6
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	758.2	700	731.6	700
Max/Min rating change allowed	152.6	168.8	158.5	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	1258.2	1187.6	1231.6	1200
New weighted rating	1258.2	1187.6	1231.6	1200
New weighted performance	0	0	0	0
Temp new rating	1258.2	1187.6	1231.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1258.2	1187.6	1231.6	1200
New K-factor	36	36	36	36
New floor	758.2	700	731.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	5	0	5
	0	0	0
History	11	6	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
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	11	7	63.64	115.9	1237.2	1353.1
Standard	6	3	50	0	1158.3	1158.3
Rapid	5	4	80	255	1331.9	1586.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1258.2	1187.6	1231.6	1200
2025-09-01	1258.2	1187.6	1231.6	1200
2025-08-01	1258.2	1187.6	1231.6	1200
2025-07-01	1258.2	1187.6	1231.6	1200
2025-06-01	1258.2	1187.6	1231.6	1200
2025-05-01	1258.2	1187.6	1231.6	1200
2025-04-01	1258.2	1187.6	1231.6	1200
2025-03-01	1258.2	1187.6	1231.6	1200
2025-02-01	1258.2	1187.6	1231.6	1200
2025-01-01	1258.2	1187.6	1231.6	1200
2024-12-01	1258.2	1187.6	1231.6	1200
2024-11-01	1258.2	1187.6	1231.6	1200
2024-10-01	1258.2	1187.6	1231.6	1200
2024-09-01	1258.2	1187.6	1231.6	1200
2024-08-01	1258.2	1187.6	1231.6	1200
2024-07-01	1258.2	1187.6	1231.6	1200
2024-06-01	1258.2	1187.6	1231.6	1200
2024-08-01	1258.2	1187.6	1231.6	1200
2024-04-01	1258.2	1187.6	1231.6	1200
2024-03-01	1258.2	1187.6	1231.6	1200
2024-02-01	1258.2	1187.6	1231.6	1200
2024-01-01	1258.2	1187.6	1231.6	1200
2023-12-01	1258.2	1187.6	1231.6	1200
2023-11-01	1258.2	1187.6	1231.6	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	2022 East Dist Individuals (U18)	2022-03-13	2022-03-13	Rapid	Cape Town (WCT)	6	5	4	Yes	Analysis
2	2019 Metro-East District Schools Trials (U15)	2019-02-01	2019-02-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-03-13	rnd 6	type Rapid	result 1
		Opponent Jacobs, C (Caitlin)				Opponent Msebi, S (Simamkele)
2	2	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-01	rnd 2	type Standard	result 1	date 2019-02-02	rnd 3	type Standard	result 1
		Opponent Mbewuleni, S (Sihle)				Opponent Rhode, C (Claudia)
3	1	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 2	type Rapid	result 1	date 2022-03-13	rnd 2	type Rapid	result 1
		Opponent Aliva, K (Kuhlenathi)				Opponent Aliva, K (Kuhlenathi)

#	Games	Start				End
1	2	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-01	rnd 2	type Standard	result 1	date 2019-02-02	rnd 3	type Standard	result 1
		Opponent Mbewuleni, S (Sihle)				Opponent Rhode, C (Claudia)
2	1	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-02	rnd 5	type Standard	result 1	date 2019-02-02	rnd 5	type Standard	result 1
		Opponent Matyobeni, M (Mbongeni)				Opponent Matyobeni, M (Mbongeni)

#	Games	Start				End
1	3	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-03-13	rnd 6	type Rapid	result 1
		Opponent Jacobs, C (Caitlin)				Opponent Msebi, S (Simamkele)
2	1	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 2	type Rapid	result 1	date 2022-03-13	rnd 2	type Rapid	result 1
		Opponent Aliva, K (Kuhlenathi)				Opponent Aliva, K (Kuhlenathi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-03-13	rnd 6	type Rapid	result 1
		Opponent Jacobs, C (Caitlin)				Opponent Msebi, S (Simamkele)
2	2	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-01	rnd 2	type Standard	result 1	date 2019-02-02	rnd 3	type Standard	result 1
		Opponent Mbewuleni, S (Sihle)				Opponent Rhode, C (Claudia)
3	1	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 2	type Rapid	result 1	date 2022-03-13	rnd 2	type Rapid	result 1
		Opponent Aliva, K (Kuhlenathi)				Opponent Aliva, K (Kuhlenathi)

#	Games	Start				End
1	2	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-01	rnd 2	type Standard	result 1	date 2019-02-02	rnd 3	type Standard	result 1
		Opponent Mbewuleni, S (Sihle)				Opponent Rhode, C (Claudia)
2	1	Tournament 2019 Metro-East District Schools Trials				Tournament 2019 Metro-East District Schools Trials
		date 2019-02-02	rnd 5	type Standard	result 1	date 2019-02-02	rnd 5	type Standard	result 1
		Opponent Matyobeni, M (Mbongeni)				Opponent Matyobeni, M (Mbongeni)

#	Games	Start				End
1	3	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-03-13	rnd 6	type Rapid	result 1
		Opponent Jacobs, C (Caitlin)				Opponent Msebi, S (Simamkele)
2	1	Tournament 2022 East Dist Individuals				Tournament 2022 East Dist Individuals
		date 2022-03-13	rnd 2	type Rapid	result 1	date 2022-03-13	rnd 2	type Rapid	result 1
		Opponent Aliva, K (Kuhlenathi)				Opponent Aliva, K (Kuhlenathi)

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	Matyobeni ,M (Mbongeni)	1	1	425	1	1	425	0	0	0	0	0	0
1	Matyobeni ,M (Mbongeni)	1	1052.6	1477.6	1	1025.2	1477.6	0	0	0	0	0	0
2	Mandyoli ,L (Lisakhanya)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mandyoli ,L (Lisakhanya)	1	1152.5	727.5	1	1143.6	727.5	0	0	0	0	0	0
3	Mbewuleni ,S (Sihle)	1	1	425	1	1	425	0	0	0	0	0	0
3	Mbewuleni ,S (Sihle)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Rhode ,C (Claudia)	1	1	425	1	1	425	0	0	0	0	0	0
4	Rhode ,C (Claudia)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	De Kock ,C (Cian)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	De Kock ,C (Cian)	1	1360.5	935.5	1	1375.1	935.5	0	0	0	0	0	0
6	Kleynhans ,T (Teon)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Kleynhans ,T (Teon)	1	983.9	558.9	1	988.8	558.9	0	0	0	0	0	0
7	Msebi ,S (Simamkele)	1	1	425	0	0	0	1	1	425	0	0	0
7	Msebi ,S (Simamkele)	1	1435.3	1860.3	0	0	0	1	1262.9	1860.3	0	0	0
8	Aliva ,K (Kuhlenathi)	1	1	425	0	0	0	1	1	425	0	0	0
8	Aliva ,K (Kuhlenathi)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	Van Niekerk ,L (Lizelle)	1	1	425	0	0	0	1	1	425	0	0	0
9	Van Niekerk ,L (Lizelle)	1	1432	1857	0	0	0	1	938	1857	0	0	0
10	Jacobs ,C (Caitlin)	1	1	425	0	0	0	1	1	425	0	0	0
10	Jacobs ,C (Caitlin)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Grobler, J (Janko)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms