Chess South Africa Ratings Database

PLAYER PAGE

Personal

Joubert, J (Jan Johannes)

Chess SA id

1090155912

FIDE id

Date of birth

2009-07-17 (U18)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-04-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1249.4	1249.3	1200	1200
Raw rating	1249.4	1249.3	1200	1200
Weighted rating	1247.7	1247.7	1200	1200
Weighted performance	1018.4	1012.1	0	0
Floor	749.4	749.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.5	154.6	165.8	165.8
Highest rating	1288.3 2023-05-01	1282.4 2023-05-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1249.4 2024-05-01	1249.3 2024-05-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1246.5 2025-08-01	1246.6 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1288.3 2023-05-01	1282.4 2023-05-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1249.4	1249.3	1200	1200
Analysis
Rating	1249.4	1249.3	1200	1200
Raw rating	1249.4	1249.3	1200	1200
Weighted rating	1247.7	1247.7	1200
Weighted performance	1018.4	1012.1	0
K-factor	36	36	36	36
Floor	749.4	749.3	700	700
Max/Min rating change allowed	154.5	154.6	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	1249.4	1249.3	1200	1200
New weighted rating	1248.2	1248.2	1200	1200
New weighted performance	1017.1	1010.9	0	0
Temp new rating	1249.4	1249.3	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1249.4	1249.3	1200	1200
New K-factor	36	36	36	36
New floor	749.4	749.3	700	700

Item	Main	Standard
	0	0
	0	0
	20	20
	9	9
	0	0
	0	0
History	29	29

Games since
	Main 20	Standard 20		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Sedibeng (GSV)
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	29	14	48.28	-14.7	1281.2	1266.5
Standard	29	14	48.28	-14.7	1281.2	1266.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1249.4	1249.3	1200	1200
2025-09-01	1249.4	1249.3	1200	1200
2025-08-01	1249.4	1249.3	1200	1200
2025-07-01	1249.4	1249.3	1200	1200
2025-06-01	1249.4	1249.3	1200	1200
2025-05-01	1249.4	1249.3	1200	1200
2025-04-01	1249.4	1249.3	1200	1200
2025-03-01	1249.4	1249.3	1200	1200
2025-02-01	1249.4	1249.3	1200	1200
2025-01-01	1249.4	1249.3	1200	1200
2024-12-01	1249.4	1249.3	1200	1200
2024-11-01	1249.4	1249.3	1200	1200
2024-10-01	1249.4	1249.3	1200	1200
2024-09-01	1249.4	1249.3	1200	1200
2024-08-01	1249.4	1249.3	1200	1200
2024-07-01	1249.4	1249.3	1200	1200
2024-06-01	1249.4	1249.3	1200	1200
2024-08-01	1249.4	1249.3	1200	1200
2024-04-01	1227.8	1228.1	1200	1200
2024-03-01	1224.5	1226.3	1200	1200
2024-02-01	1224.5	1226.3	1200	1200
2024-01-01	1224.5	1226.3	1200	1200
2023-12-01	1224.5	1226.3	1200	1200
2023-11-01	1224.5	1226.3	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	Hoerskool Overvaal Chess Open 2024 (B)	2024-04-20	2024-04-20	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
2	Vaalpark Primary Chess Open 2024 (B)	2024-04-13	2024-04-13	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	HS Drie Riviere Chess Open Section 2024 (B)	2024-03-09	2024-03-09	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
4	Valia's Open 2024 (B)	2024-03-02	2024-03-02	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
5	D8 Schools Individuals 2023 (U15 Boys)	2023-05-20	2023-05-20	Standard	West Rand (GWR)	5	4	2.5	Yes	Analysis
6	Valia's Chess Tournament 2023 (C)	2023-05-06	2023-05-06	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament D8 Schools Individuals 2023				Tournament Valia's Open 2024
		date 2023-05-20	rnd 4	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Madlabane, N (Ntando)				Opponent Gebuza, M (Mbali)
2	2	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Hoerskool Overvaal Chess Open 2024
		date 2024-04-20	rnd 1	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tefu, R (Reyaleboha)				Opponent Tolmay, W (Walroux)
3	2	Tournament Vaalpark Primary Chess Open 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-04-13	rnd 2	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Nhose, A (Asemahle Zibusele)

#	Games	Start				End
1	4	Tournament D8 Schools Individuals 2023				Tournament Valia's Open 2024
		date 2023-05-20	rnd 4	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Madlabane, N (Ntando)				Opponent Gebuza, M (Mbali)
2	2	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Hoerskool Overvaal Chess Open 2024
		date 2024-04-20	rnd 1	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tefu, R (Reyaleboha)				Opponent Tolmay, W (Walroux)
3	2	Tournament Vaalpark Primary Chess Open 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-04-13	rnd 2	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Nhose, A (Asemahle Zibusele)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Hoerskool Overvaal Chess Open 2024
		date 2024-04-20	rnd 1	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tefu, R (Reyaleboha)				Opponent Tolmay, W (Walroux)
2	2	Tournament Vaalpark Primary Chess Open 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-04-13	rnd 2	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Nhose, A (Asemahle Zibusele)
3	2	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 4	type Standard	result 1	date 2024-03-09	rnd 5	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Marimuthu, S (Shaylen)

#	Games	Start				End
1	2	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Hoerskool Overvaal Chess Open 2024
		date 2024-04-20	rnd 1	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tefu, R (Reyaleboha)				Opponent Tolmay, W (Walroux)
2	2	Tournament Vaalpark Primary Chess Open 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-04-13	rnd 2	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Nhose, A (Asemahle Zibusele)
3	2	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 4	type Standard	result 1	date 2024-03-09	rnd 5	type Standard	result 1
		Opponent Nthejane, T (Tshepang)				Opponent Marimuthu, S (Shaylen)

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	Marimuthu ,S (Shaylen)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	Marimuthu ,S (Shaylen)	3	1316.3	1599.7	3	1299.6	1599.7	0	0	0	0	0	0
2	Farrell ,J (Jonty)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Farrell ,J (Jonty)	2	1442.6	1017.6	2	1445.4	1017.6	0	0	0	0	0	0
3	Nthejane ,T (Tshepang)	2	2	425	2	2	425	0	0	0	0	0	0
3	Nthejane ,T (Tshepang)	2	1119.2	1544.2	2	1108.2	1544.2	0	0	0	0	0	0
4	Kok ,L (Largo)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Kok ,L (Largo)	1	1196.4	771.4	1	1196.9	771.4	0	0	0	0	0	0
5	Deysel ,H (Hannah)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Deysel ,H (Hannah)	1	1566.2	1141.2	1	1573.9	1141.2	0	0	0	0	0	0
6	Kleynhans ,C (Corne)	1	1	425	1	1	425	0	0	0	0	0	0
6	Kleynhans ,C (Corne)	1	1127	1552	1	1113.6	1552	0	0	0	0	0	0
7	Mittermaier ,G (Gunther)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Mittermaier ,G (Gunther)	1	1467.4	1042.4	1	1447.3	1042.4	0	0	0	0	0	0
8	Mapasa ,W (Wandile)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Mapasa ,W (Wandile)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
9	Tefu ,R (Reyaleboha)	1	1	425	1	1	425	0	0	0	0	0	0
9	Tefu ,R (Reyaleboha)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Madlabane ,N (Ntando)	1	1	425	1	1	425	0	0	0	0	0	0
10	Madlabane ,N (Ntando)	1	1184.7	1609.7	1	1181.6	1609.7	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

Joubert, J (Jan Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms