Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oosthuizen, J (Juan)

Chess SA id

1100099279

FIDE id

Date of birth

2010-01-29 (U16)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-03-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1217.7	1210.4	1221.6	1200
Raw rating	1217.7	1210.4	1221.6	1200
Weighted rating	1217.7	1210.4	1221.6	1200
Weighted performance	332.1	328.5	0	0
Floor	717.7	710.4	721.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	161.7	163.4	160.8	165.8
Highest rating	1268.2 2019-06-01	1210.4 2024-02-01	1626.7 2019-05-01	1200 2018-10-01
Highest raw rating	1217.7 2024-02-01	1210.4 2024-02-01	1221.6 2024-02-01	1200 2024-02-01
Highest weighted rating	1217.7 2024-02-01	1210.4 2024-02-01	1221.6 2025-02-01	1200 2018-10-01
Highest weighted performance	1268.2 2019-06-01	1200 2018-02-01	1626.7 2019-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1217.7	1210.4	1221.6	1200
Analysis
Rating	1217.7	1210.4	1221.6	1200
Raw rating	1217.7	1210.4	1221.6	1200
Weighted rating	1217.7	1210.4	1221.6
Weighted performance	332.1	328.5	0
K-factor	36	36	36	36
Floor	717.7	710.4	721.6	700
Max/Min rating change allowed	161.7	163.4	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	1217.7	1210.4	1221.6	1200
New weighted rating	1217.7	1210.4	1221.6	1200
New weighted performance	325	321.4	0	0
Temp new rating	1217.7	1210.4	1221.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1217.7	1210.4	1221.6	1200
New K-factor	36	36	36	36
New floor	717.7	710.4	721.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	104	103	1

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	104	49.5	47.6	-20.4	1147.7	1127.3
Standard	103	48.5	47.09	-24.8	1147.2	1122.5
Rapid	1	1	100	425	1200	1625
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1217.7	1210.4	1221.6	1200
2025-09-30	1217.7	1210.4	1221.6	1200
2025-09-01	1217.7	1210.4	1221.6	1200
2025-08-01	1217.7	1210.4	1221.6	1200
2025-07-01	1217.7	1210.4	1221.6	1200
2025-06-01	1217.7	1210.4	1221.6	1200
2025-05-01	1217.7	1210.4	1221.6	1200
2025-04-01	1217.7	1210.4	1221.6	1200
2025-03-01	1217.7	1210.4	1221.6	1200
2025-02-01	1217.7	1210.4	1221.6	1200
2025-01-01	1217.7	1210.4	1221.6	1200
2024-12-01	1217.7	1210.4	1221.6	1200
2024-11-01	1217.7	1210.4	1221.6	1200
2024-10-01	1217.7	1210.4	1221.6	1200
2024-09-01	1217.7	1210.4	1221.6	1200
2024-08-01	1217.7	1210.4	1221.6	1200
2024-07-01	1217.7	1210.4	1221.6	1200
2024-09-01	1217.7	1210.4	1221.6	1200
2024-05-01	1217.7	1210.4	1221.6	1200
2024-04-01	1217.7	1210.4	1221.6	1200
2024-03-01	1217.7	1210.4	1221.6	1200
2024-02-01	1217.7	1210.4	1221.6	1200
2024-01-01	1217.7	1210.4	1221.6	1200
2023-12-01	1217.7	1210.4	1221.6	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	Chessnuts 2 Tournament 2020 (Knights)	2020-03-07	2020-03-07	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
2	2019 South African Junior Team Championships (U10C)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
3	Chessnuts November Tournament 2019 (Knights)	2019-11-08	2019-11-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
4	The Joburg Open 2019 (Rising Stars)	2019-10-12	2019-10-12	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
5	GJM vs GE Inter Region 2019 (U10C)	2019-10-05	2019-10-05	Standard	Johannesburg Metro (GJM)	5	5	5	Yes	Analysis
6	JNW Club - Maragon Open 2019 (E)	2019-08-03	2019-08-03	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
7	Chessnuts Under 1350 Tournament 2019 (Pawns+Knights)	2019-08-24	2019-08-24	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
8	JHB Metro Closed 2019 (U10)	2019-07-27	2019-07-28	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis
9	Chessnuts Under 1200 Rated Tournament 2019 (Knights)	2019-07-13	2019-07-13	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
10	Fonties Challange 2019 (U9)	2019-06-08	2019-06-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	Chess Heroes Junior Tournament 2019 (C)	2019-06-22	2019-06-22	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
12	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	1	1	Yes	Analysis
13	Chessnuts Under 1200 6 April 2019 (Knights)	2019-04-06	2019-04-06	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
14	Chessnuts Under 1200 27 April 2019 (Knights)	2019-04-27	2019-04-27	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
15	Chessnuts Challenge 1 2019 (Knights)	2019-02-02	2019-02-02	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
16	Chessnuts November 2018 (B)	2018-11-17	2018-11-17	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
17	Chessnuts Spring 2018 (Knights)	2018-09-29	2018-09-29	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
18	Chessnuts - Under 1000 Ratings Tournament 2018 (B)	2018-07-21	2018-07-21	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
19	Chessnuts Youth Day Chess Tournament 2018 (U10)	2018-06-16	2018-06-16	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
20	Fonties Challenge 2018 (U9)	2018-04-21	2018-04-21	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
21	The Outpost Chess Club Open 2018 (Development)	2018-03-17	2018-03-17	Standard	Johannesburg Metro (GJM)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	9	Tournament Chessnuts Under 1350 Tournament 2019				Tournament The Joburg Open 2019
		date 2019-08-24	rnd 3	type Standard	result 1	date 2019-10-12	rnd 1	type Standard	result 1
		Opponent Eapen, E (Ethan)				Opponent Marais, E (Enzo)
2	5	Tournament Chessnuts Spring 2018				Tournament Chessnuts November 2018
		date 2018-09-29	rnd 5	type Standard	result 1	date 2018-11-17	rnd 4	type Standard	result 1
		Opponent Bowers, M (Mpho)				Opponent Rai, A (Akansha)
3	4	Tournament 2019 South African Junior Team Championships				Tournament Chessnuts 2 Tournament 2020
		date 2020-01-08	rnd 7	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Mcquire, M (Mikael)				Opponent Joubert, D (Daniel)

#	Games	Start				End
1	9	Tournament Chessnuts Under 1350 Tournament 2019				Tournament The Joburg Open 2019
		date 2019-08-24	rnd 3	type Standard	result 1	date 2019-10-12	rnd 1	type Standard	result 1
		Opponent Eapen, E (Ethan)				Opponent Marais, E (Enzo)
2	5	Tournament Chessnuts Spring 2018				Tournament Chessnuts November 2018
		date 2018-09-29	rnd 5	type Standard	result 1	date 2018-11-17	rnd 4	type Standard	result 1
		Opponent Bowers, M (Mpho)				Opponent Rai, A (Akansha)
3	4	Tournament 2019 South African Junior Team Championships				Tournament Chessnuts 2 Tournament 2020
		date 2020-01-08	rnd 7	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Mcquire, M (Mikael)				Opponent Joubert, D (Daniel)

#	Games	Start				End
1	1	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 1	type Rapid	result 1
		Opponent Strydom, W (Wade)				Opponent Strydom, W (Wade)

No games found.

#	Games	Start				End

#	Games	Start				End
1	9	Tournament Chessnuts Under 1350 Tournament 2019				Tournament The Joburg Open 2019
		date 2019-08-24	rnd 3	type Standard	result 1	date 2019-10-12	rnd 1	type Standard	result 1
		Opponent Eapen, E (Ethan)				Opponent Marais, E (Enzo)
2	5	Tournament Chessnuts Spring 2018				Tournament Chessnuts November 2018
		date 2018-09-29	rnd 5	type Standard	result 1	date 2018-11-17	rnd 4	type Standard	result 1
		Opponent Bowers, M (Mpho)				Opponent Rai, A (Akansha)
3	4	Tournament 2019 South African Junior Team Championships				Tournament Chessnuts 2 Tournament 2020
		date 2020-01-08	rnd 7	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Mcquire, M (Mikael)				Opponent Joubert, D (Daniel)

#	Games	Start				End
1	9	Tournament Chessnuts Under 1350 Tournament 2019				Tournament The Joburg Open 2019
		date 2019-08-24	rnd 3	type Standard	result 1	date 2019-10-12	rnd 1	type Standard	result 1
		Opponent Eapen, E (Ethan)				Opponent Marais, E (Enzo)
2	5	Tournament Chessnuts Spring 2018				Tournament Chessnuts November 2018
		date 2018-09-29	rnd 5	type Standard	result 1	date 2018-11-17	rnd 4	type Standard	result 1
		Opponent Bowers, M (Mpho)				Opponent Rai, A (Akansha)
3	4	Tournament 2019 South African Junior Team Championships				Tournament Chessnuts 2 Tournament 2020
		date 2020-01-08	rnd 7	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Mcquire, M (Mikael)				Opponent Joubert, D (Daniel)

#	Games	Start				End
1	1	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 1	type Rapid	result 1
		Opponent Strydom, W (Wade)				Opponent Strydom, W (Wade)

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	Marais ,E (Enzo)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
1	Marais ,E (Enzo)	3	1116.7	1116.7	3	1097.3	1116.7	0	0	0	0	0	0
2	Kurten ,K (Kian)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Kurten ,K (Kian)	3	1163	1021.3	3	1155.1	1021.3	0	0	0	0	0	0
3	Steyn ,A (Anneke)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Steyn ,A (Anneke)	3	1253.2	828.2	3	1246	828.2	0	0	0	0	0	0
4	Eapen ,E (Ethan)	2	2	425	2	2	425	0	0	0	0	0	0
4	Eapen ,E (Ethan)	2	1106.9	1531.9	2	1089.8	1531.9	0	0	0	0	0	0
5	Rossouw ,A (Andries Jacobus Putter)	2	1	0	2	1	0	0	0	0	0	0	0
5	Rossouw ,A (Andries Jacobus Putter)	2	1238.4	1238.4	2	1226.6	1238.4	0	0	0	0	0	0
6	Van Der Bank ,C (Chantal)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Van Der Bank ,C (Chantal)	2	946.5	521.5	2	881	521.5	0	0	0	0	0	0
7	Venter ,H (Hennie)	2	2	425	2	2	425	0	0	0	0	0	0
7	Venter ,H (Hennie)	2	1136.7	1561.7	2	1122.8	1561.7	0	0	0	0	0	0
8	Caroto ,K (Konrad)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Caroto ,K (Konrad)	2	1156.2	731.2	2	1143	731.2	0	0	0	0	0	0
9	Botha ,A (Andrea)	2	1	0	2	1	0	0	0	0	0	0	0
9	Botha ,A (Andrea)	2	1168.8	1168.8	2	1160.3	1168.8	0	0	0	0	0	0
10	Mitchell ,D (Dylan)	2	1	0	2	1	0	0	0	0	0	0	0
10	Mitchell ,D (Dylan)	2	1193.2	1193.2	2	1187.4	1193.2	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

Oosthuizen, J (Juan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms