Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jooste, J (Josh)

Chess SA id

1090109066

FIDE id

Date of birth

2009-01-11 (U18)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1521.7

Item	Main	Standard	Rapid	Blitz
Rating	1515.9	1512.4	1215.6	1200
Raw rating	1501	1505.2	1215.6	1200
Weighted rating	1438.3	1431.2	1215.6	1200
Weighted performance	1515.9	1512.4	0	0
Floor	1024.6	1013.2	758.4	700
K-factor	32	32	36	36
Min/Max rating change allowed	108	107.3	162.2	165.8
Highest rating	1541.2 2022-12-01	1529.7 2022-12-01	1456.5 2019-05-01	1200 2018-10-01
Highest raw rating	1524.6 2023-01-01	1513.2 2023-01-01	1258.4 2020-01-01	1200 2024-02-01
Highest weighted rating	1524.6 2024-07-01	1513.2 2024-07-01	1258.4 2021-05-01	1200 2018-10-01
Highest weighted performance	1541.2 2022-12-01	1529.7 2022-12-01	1456.5 2019-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.5	-0.5	0	0
New rating	1515.4	1511.9	1215.6	1200
Analysis
Rating	1515.9	1512.4	1215.6	1200
Raw rating	1501	1505.2	1215.6	1200
Weighted rating	1438.3	1431.2	1215.6
Weighted performance	1515.9	1512.4	0
K-factor	32	32	36	36
Floor	1024.6	1013.2	758.4	700
Max/Min rating change allowed	108	107.3	162.2	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	1501	1505.2	1215.6	1200
New weighted rating	1443.2	1437.1	1215.6	1200
New weighted performance	1515.4	1511.9	0	0
Temp new rating	1515.4	1511.9	1215.6	1200
Temp new rating +/-	-0.5	-0.5	0	0
Final new rating +/-	-0.5	-0.5	0	0
New rating	1515.4	1511.9	1215.6	1200
New K-factor	32	32	36	36
New floor	1024.6	1013.2	758.4	700

Item	Main	Standard	Rapid
	0	0	0
	21	21	0
	43	43	0
	34	34	0
	50	43	7
	22	22	0
History	233	221	12

Games since
	Main 64	Standard 64		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1144		401		152
Male	993		340		128
U18	189		65		30
U18 Male	168		56		26
Standard
	RSA		Province		Region
Overall	1084		402		154
Male	927		338		130
U18	180		68		33
U18 Male	158		58		29
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	21	14	66.67	141.7	1438.3	1580
Standard	21	14	66.67	141.7	1438.3	1580
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	233	135	57.94	67.5	1282.8	1350.3
Standard	221	127.5	57.69	65.4	1284.6	1350
Rapid	12	7.5	62.5	106.2	1248.3	1354.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1501	1505.2	1215.6	1200
2025-09-01	1501	1505.2	1215.6	1200
2025-08-01	1453.9	1448	1215.6	1200
2025-07-01	1453.9	1448	1215.6	1200
2025-06-01	1453.9	1448	1215.6	1200
2025-05-01	1453.9	1448	1215.6	1200
2025-04-01	1422.5	1411.8	1215.6	1200
2025-03-01	1422.5	1411.8	1215.6	1200
2025-02-01	1420.5	1410.3	1215.6	1200
2025-01-01	1357.7	1348.7	1215.6	1200
2024-12-01	1364	1352.9	1215.6	1200
2024-11-01	1364	1352.9	1215.6	1200
2024-10-01	1364	1352.9	1215.6	1200
2024-09-01	1404	1393.2	1215.6	1200
2024-08-01	1439.2	1426.5	1215.6	1200
2024-07-01	1459.7	1451.5	1215.6	1200
2024-06-01	1464.2	1451.2	1215.6	1200
2024-08-01	1464.2	1451.2	1215.6	1200
2024-04-01	1453.3	1436.5	1215.6	1200
2024-03-01	1453.3	1436.5	1215.6	1200
2024-02-01	1491.8	1488.3	1215.6	1200
2024-01-01	1460.2	1455	1215.6	1200
2023-12-01	1460.2	1455	1215.6	1200
2023-11-01	1460.2	1455	1215.6	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	2025 Tshwane South School District CLOSED League Championship (U17A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U18)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	6	3	Yes	Analysis
3	2025 Mid Gauteng Open Chess Tournament (C)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
4	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Tshwane South School District CLOSED League Championship (U17A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U18)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	6	3	Yes	Analysis
3	2025 Mid Gauteng Open Chess Tournament (C)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
4	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
5	Gauteng Inter-Region at UJ 2024 (U16 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
6	2024 Etienne Lewis (U16)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
7	2024 Alekhine Open Chess Tournament (B)	2024-08-09	2024-08-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	2024 Midstream College Open Chess Tournament (A)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
9	2024 Elise Steenkamp Open Chess Tournament (Kings)	2024-06-15	2024-06-17	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
10	2024 Silver Lakes Open Chess Tournament (C)	2024-04-20	2024-04-20	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
11	Grey College Team Championship 2024 (A)	2024-02-23	2024-02-24	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
12	2024 Gauteng Inter-Region Chess Championship (U16B)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
13	2023 Gauteng Top Schools (U15 Mixed)	2023-08-19	2023-08-19	Standard	West Rand (GWR)	5	5	4	Yes	Analysis
14	2023 Woman's Day Open Chess Tournament (Queen)	2023-08-09	2023-08-09	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
15	2023 Etienne Lewis Closed Tournament (U16)	2023-08-25	2023-08-27	Standard	Tshwane (GTP)	7	6	4	Yes	Analysis
16	2023 Tshwane South School District CLOSED League Championship (U15)	2023-07-29	2023-07-29	Standard	Tshwane (GTP)	3	3	2	Yes	Analysis
17	2023 Lubowski Open Tournament (B)	2023-06-24	2023-06-25	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
18	Laerskool Constantiapark Open Chess Tournament 2023 (Open)	2023-02-18	2023-02-18	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
19	2023 Tshwane Chess Open Registration Tournament (B1)	2023-01-28	2023-01-28	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
20	2022 South African Junior Team Chess Championships (U14 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	7	7	Yes	Analysis
21	Lardies Tournament 2022 (U14)	2022-10-29	2022-10-29	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
22	2022 Etienne Lewis (U14 Open)	2022-09-02	2022-09-04	Standard	Tshwane (GTP)	7	7	5	Yes	Analysis
23	2022 Alekhine Open (C)	2022-08-13	2022-08-14	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
24	D4 Play Offs 2022 (U13)	2022-07-30	2022-07-30	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
25	D4 Individuals 2022 (U13 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	3.5	Yes	Analysis
26	2022 Gauteng Interregion (U14 Open)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
27	Piet Robertse 2022 (C)	2022-02-05	2022-02-05	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
28	2022 Tshwane Chess Open Registration Tournament (C2)	2022-01-29	2022-01-29	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
29	2021 Lardies Ope (C)	2021-10-30	2021-10-30	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
30	2021 Etienne Lewis Closed Trials (U14 Open)	2021-09-24	2021-09-26	Standard	Nelson Mandela Bay (ENM)	7	7	4	Yes	Analysis
31	2021 Lubowski Open Tournament (C)	2021-05-01	2021-05-02	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
32	2021 Registration Tournament (C)	2021-03-13	2021-03-13	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
33	2020 Constantiapark Open Chess Tournament (D)	2020-02-08	2020-02-08	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
34	2020 Blou Bul (D)	2020-02-15	2020-02-15	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
35	2020 Registration Tournament (D)	2020-01-25	2020-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
36	2019 South African Junior Team Championships (U12E)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	4.5	Yes	Analysis
37	2019 TC SAJCC Prep Tournament (B)	2019-11-30	2019-11-30	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
38	2019 Lardies Open (D)	2019-10-26	2019-10-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
39	2019 Etienne Lewis Trials (U12 Boys)	2019-08-30	2019-09-01	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
40	2019 Alekhine Open (D)	2019-08-09	2019-08-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
41	2019 D4 Tshwane South Schools League Team Finals (U11)	2019-07-27	2019-07-27	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
42	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	4	Yes	Analysis
43	2019 TuksChess Open (C)	2019-02-23	2019-02-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
44	2019 Piet Robbertse (D)	2019-02-01	2019-02-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	7	Tournament 2023 Gauteng Top Schools				Tournament 2023 Etienne Lewis Closed Tournament
		date 2023-08-19	rnd 2	type Standard	result 1	date 2023-08-26	rnd 4	type Standard	result 1
		Opponent Ramarou, B (Bokang)				Opponent Snydert, A (Aiden Franscisco)
2	7	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-08	rnd 7	type Standard	result 1
		Opponent Botha, A (Andrea)				Opponent Pelesa, O (Oratilwe)
3	6	Tournament 2022 Etienne Lewis				Tournament Lardies Tournament 2022
		date 2022-09-04	rnd 6	type Standard	result 1	date 2022-10-29	rnd 4	type Standard	result 1
		Opponent Seokola, O (Onkarabile)				Opponent Myburgh, J (Jacques)

#	Games	Start				End
1	7	Tournament 2023 Gauteng Top Schools				Tournament 2023 Etienne Lewis Closed Tournament
		date 2023-08-19	rnd 2	type Standard	result 1	date 2023-08-26	rnd 4	type Standard	result 1
		Opponent Ramarou, B (Bokang)				Opponent Snydert, A (Aiden Franscisco)
2	7	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-08	rnd 7	type Standard	result 1
		Opponent Botha, A (Andrea)				Opponent Pelesa, O (Oratilwe)
3	6	Tournament 2022 Etienne Lewis				Tournament Lardies Tournament 2022
		date 2022-09-04	rnd 6	type Standard	result 1	date 2022-10-29	rnd 4	type Standard	result 1
		Opponent Seokola, O (Onkarabile)				Opponent Myburgh, J (Jacques)

#	Games	Start				End
1	5	Tournament 2019 Super 12 Laerskole				Tournament D4 Individuals 2022
		date 2019-05-04	rnd 4	type Rapid	result 1	date 2022-04-23	rnd 3	type Rapid	result 1
		Opponent Boneschans, M (Marthinus)				Opponent Vermeulen, T (Tiaan Leon)
2	2	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 1	type Rapid	result 1	date 2019-05-04	rnd 2	type Rapid	result 1
		Opponent Rossouw, E (Edrich)				Opponent Weyers, D (Djine)
3	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 7	type Rapid	result 0.5	date 2022-04-23	rnd 7	type Rapid	result 0.5
		Opponent Van Der Merwe, A (Adriaan)				Opponent Van Der Merwe, A (Adriaan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament 2023 Gauteng Top Schools				Tournament 2023 Etienne Lewis Closed Tournament
		date 2023-08-19	rnd 2	type Standard	result 1	date 2023-08-26	rnd 4	type Standard	result 1
		Opponent Ramarou, B (Bokang)				Opponent Snydert, A (Aiden Franscisco)
2	7	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-08	rnd 7	type Standard	result 1
		Opponent Botha, A (Andrea)				Opponent Pelesa, O (Oratilwe)
3	4	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2024-01-13	rnd 1	type Standard	result 1	date 2024-01-14	rnd 4	type Standard	result 1
		Opponent Barnard, M (Martin)				Opponent Fouche, H (Heinrich)

#	Games	Start				End
1	7	Tournament 2023 Gauteng Top Schools				Tournament 2023 Etienne Lewis Closed Tournament
		date 2023-08-19	rnd 2	type Standard	result 1	date 2023-08-26	rnd 4	type Standard	result 1
		Opponent Ramarou, B (Bokang)				Opponent Snydert, A (Aiden Franscisco)
2	7	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-08	rnd 7	type Standard	result 1
		Opponent Botha, A (Andrea)				Opponent Pelesa, O (Oratilwe)
3	4	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2024-01-13	rnd 1	type Standard	result 1	date 2024-01-14	rnd 4	type Standard	result 1
		Opponent Barnard, M (Martin)				Opponent Fouche, H (Heinrich)

#	Games	Start				End
1	5	Tournament 2019 Super 12 Laerskole				Tournament D4 Individuals 2022
		date 2019-05-04	rnd 4	type Rapid	result 1	date 2022-04-23	rnd 3	type Rapid	result 1
		Opponent Boneschans, M (Marthinus)				Opponent Vermeulen, T (Tiaan Leon)
2	2	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 1	type Rapid	result 1	date 2019-05-04	rnd 2	type Rapid	result 1
		Opponent Rossouw, E (Edrich)				Opponent Weyers, D (Djine)

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	Vermeulen ,T (Tiaan Leon)	4	3	212.5	3	2	141.7	1	1	425	0	0	0
1	Vermeulen ,T (Tiaan Leon)	4	1262.9	1475.4	3	1273.3	1404.6	1	500	1687.9	0	0	0
2	Yang ,A (Alex)	4	0.5	-318.8	3	0.5	-283.3	1	0	-425	0	0	0
2	Yang ,A (Alex)	4	1474	1155.2	3	1465.5	1190.6	1	1200	1049	0	0	0
3	De Jager ,J (Jandre)	3	3	425	3	3	425	0	0	0	0	0	0
3	De Jager ,J (Jandre)	3	1265.5	1690.5	3	1261	1690.5	0	0	0	0	0	0
4	Liang ,YX (Yi-Xuan (Bowie))	3	0	-425	3	0	-425	0	0	0	0	0	0
4	Liang ,YX (Yi-Xuan (Bowie))	3	1484.8	1059.8	3	1474.6	1059.8	0	0	0	0	0	0
5	Grobler ,DDI (Donovan Denzel Izak)	2	1	0	2	1	0	0	0	0	0	0	0
5	Grobler ,DDI (Donovan Denzel Izak)	2	1260	1260	2	1248.5	1260	0	0	0	0	0	0
6	Mahlangu ,NP (Nkosinathi Phillip)	2	1	0	2	1	0	0	0	0	0	0	0
6	Mahlangu ,NP (Nkosinathi Phillip)	2	1351.7	1351.7	2	1342.2	1351.7	0	0	0	0	0	0
7	Louw ,N (Nova)	2	2	425	2	2	425	0	0	0	0	0	0
7	Louw ,N (Nova)	2	1359.2	1784.2	2	1349.2	1784.2	0	0	0	0	0	0
8	Kgatla ,D (Daniel)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
8	Kgatla ,D (Daniel)	2	1378.6	1166.1	2	1380.6	1166.1	0	0	0	0	0	0
9	Van Rooyen ,M (Marcel)	2	1	0	2	1	0	0	0	0	0	0	0
9	Van Rooyen ,M (Marcel)	2	1347.6	1347.6	2	1336.7	1347.6	0	0	0	0	0	0
10	Koning ,L (Lehan)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Koning ,L (Lehan)	2	1571.6	1146.6	2	1563.5	1146.6	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

Jooste, J (Josh)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms