Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oosthuizen, L (Leon)

Chess SA id

174029051

FIDE id

Date of birth

1974-08-01 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-04-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1344.8	1345.3	1208.7	1383
Raw rating	1344.8	1344.5	1208.7	1383
Weighted rating	1344.8	1345.3	1208.6	1382.4
Weighted performance	0	0	0	0
Floor	861.4	883	708.7	883
K-factor	36	36	36	36
Min/Max rating change allowed	134.9	135	163.8	127.8
Highest rating	1361.4 2024-02-01	1383 2024-02-01	1208.7 2024-02-01	1383 2024-02-01
Highest raw rating	1361.4 2024-02-01	1383 2024-02-01	1208.7 2024-02-01	1383 2024-02-01
Highest weighted rating	1340.8 2025-08-01	1342.1 2025-08-01	1207.9 2025-08-01	1376.9 2025-08-01
Highest weighted performance	1279.1 2024-04-01	1304.5 2024-04-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.3	0.1	0	0
New rating	1345.1	1345.3	1208.7	1383
Analysis
Rating	1344.8	1345.3	1208.7	1383
Raw rating	1344.8	1344.5	1208.7	1383
Weighted rating	1344.8	1345.3	1208.6
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	861.4	883	708.7	883
Max/Min rating change allowed	134.9	135	163.8	127.8
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	1344.8	1344.5	1208.7	1383
New weighted rating	1345.1	1345.3	1208.7	1383
New weighted performance	0	0	0	0
Temp new rating	1345.1	1345.3	1208.7	1383
Temp new rating +/-	0.3	0.1	0	0
Final new rating +/-	0.3	0.1	0	0
New rating	1345.1	1345.3	1208.7	1383
New K-factor	36	36	36	36
New floor	861.4	883	708.7	883

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	11	11	0
	7	0	7
	0	0	0
	0	0	0
History	18	11	7

Games since
	Main 18	Standard 11		Rapid 7		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	18	9	50	0	1256.6	1256.6
Standard	11	6	54.55	38.6	1273.9	1312.6
Rapid	7	3	42.86	-60.7	1229.3	1168.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1344.8	1344.5	1208.7	1383
2025-09-30	1344.8	1344.5	1208.7	1383
2025-09-01	1344.8	1344.5	1208.7	1383
2025-08-01	1344.8	1344.5	1208.7	1383
2025-07-01	1344.8	1344.5	1208.7	1383
2025-06-01	1344.8	1344.5	1208.7	1383
2025-05-01	1344.8	1344.5	1208.7	1383
2025-04-01	1344.8	1344.5	1208.7	1383
2025-03-01	1344.8	1344.5	1208.7	1383
2025-02-01	1344.8	1344.5	1208.7	1383
2025-01-01	1344.8	1344.5	1208.7	1383
2024-12-01	1344.8	1344.5	1208.7	1383
2024-11-01	1344.8	1344.5	1208.7	1383
2024-10-01	1344.8	1344.5	1208.7	1383
2024-09-01	1344.8	1344.5	1208.7	1383
2024-08-01	1344.8	1344.5	1208.7	1383
2024-07-01	1344.8	1344.5	1208.7	1383
2024-09-01	1344.8	1344.5	1208.7	1383
2024-05-01	1344.8	1344.5	1208.7	1383
2024-04-01	1343	1349.9	1208.7	1383
2024-03-01	1361.4	1383	1208.7	1383
2024-02-01	1361.4	1383	1208.7	1383
2024-01-01	1361.4	1383	1208.7	1383
2023-12-01	1196.5	1200	1178.8	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	Kouga Mayor's Cup Final 2024 (Open)	2024-04-12	2024-04-13	Standard	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
2	Kouga Mayor's Cup 2024 (Open)	2024-03-08	2024-03-09	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
3	Lagoon Open Tournament 2023	2023-11-04	2023-11-04	Rapid	Sarah Baartman (ESB)	7	7	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-03-09	rnd 6	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Ackerman, M (Mervin)				Opponent Groener, B (Begravian)
2	2	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup 2024
		date 2024-03-08	rnd 1	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Jacobs, G (Gabriel)				Opponent Janse Van Rensburg, S (San-Marie)
3	2	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 5	type Rapid	result 1
		Opponent Mangaliso, A (Ayakha)				Opponent Prinsloo, E (Emmanuel)

#	Games	Start				End
1	3	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-03-09	rnd 6	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Ackerman, M (Mervin)				Opponent Groener, B (Begravian)
2	2	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup 2024
		date 2024-03-08	rnd 1	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Jacobs, G (Gabriel)				Opponent Janse Van Rensburg, S (San-Marie)
3	1	Tournament Kouga Mayor's Cup Final 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-04-13	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Janse Van Rensburg, S (San-Marie)				Opponent Janse Van Rensburg, S (San-Marie)

#	Games	Start				End
1	2	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 5	type Rapid	result 1
		Opponent Mangaliso, A (Ayakha)				Opponent Prinsloo, E (Emmanuel)
2	1	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 2	type Rapid	result 1	date 2023-11-04	rnd 2	type Rapid	result 1
		Opponent Wegmann, T (Thorsten)				Opponent Wegmann, T (Thorsten)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-03-09	rnd 6	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Ackerman, M (Mervin)				Opponent Groener, B (Begravian)
2	2	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup 2024
		date 2024-03-08	rnd 1	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Jacobs, G (Gabriel)				Opponent Janse Van Rensburg, S (San-Marie)
3	2	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 5	type Rapid	result 1
		Opponent Mangaliso, A (Ayakha)				Opponent Prinsloo, E (Emmanuel)

#	Games	Start				End
1	3	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-03-09	rnd 6	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Ackerman, M (Mervin)				Opponent Groener, B (Begravian)
2	2	Tournament Kouga Mayor's Cup 2024				Tournament Kouga Mayor's Cup 2024
		date 2024-03-08	rnd 1	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Jacobs, G (Gabriel)				Opponent Janse Van Rensburg, S (San-Marie)
3	1	Tournament Kouga Mayor's Cup Final 2024				Tournament Kouga Mayor's Cup Final 2024
		date 2024-04-13	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Janse Van Rensburg, S (San-Marie)				Opponent Janse Van Rensburg, S (San-Marie)

#	Games	Start				End
1	2	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 5	type Rapid	result 1
		Opponent Mangaliso, A (Ayakha)				Opponent Prinsloo, E (Emmanuel)
2	1	Tournament Lagoon Open Tournament 2023				Tournament Lagoon Open Tournament 2023
		date 2023-11-04	rnd 2	type Rapid	result 1	date 2023-11-04	rnd 2	type Rapid	result 1
		Opponent Wegmann, T (Thorsten)				Opponent Wegmann, T (Thorsten)

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	Munemo ,T (Tadiwa)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Munemo ,T (Tadiwa)	2	1483.7	1058.7	2	1456.2	1058.7	0	0	0	0	0	0
2	Janse Van Rensburg ,S (San-Marie)	2	2	425	2	2	425	0	0	0	0	0	0
2	Janse Van Rensburg ,S (San-Marie)	2	1184.9	1609.9	2	1157.9	1609.9	0	0	0	0	0	0
3	Ackerman ,M (Mervin)	1	1	425	1	1	425	0	0	0	0	0	0
3	Ackerman ,M (Mervin)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Moos ,X (Xavier)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Moos ,X (Xavier)	1	1561.9	1136.9	1	1513.1	1136.9	0	0	0	0	0	0
5	Sibengile ,Z (Zolani)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Sibengile ,Z (Zolani)	1	1291.5	866.5	1	1250.2	866.5	0	0	0	0	0	0
6	Booysen ,T (Tamia)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Booysen ,T (Tamia)	1	1032.9	607.9	1	994	607.9	0	0	0	0	0	0
7	Jacobs ,G (Gabriel)	1	1	425	1	1	425	0	0	0	0	0	0
7	Jacobs ,G (Gabriel)	1	1170.8	1595.8	1	1167.6	1595.8	0	0	0	0	0	0
8	Jantjies ,J (Jayden)	1	1	425	1	1	425	0	0	0	0	0	0
8	Jantjies ,J (Jayden)	1	1171.3	1596.3	1	1138	1596.3	0	0	0	0	0	0
9	Groener ,B (Begravian)	1	1	425	1	1	425	0	0	0	0	0	0
9	Groener ,B (Begravian)	1	1247.5	1672.5	1	1241.1	1672.5	0	0	0	0	0	0
10	Prinsloo ,E (Emmanuel)	1	1	425	0	0	0	1	1	425	0	0	0
10	Prinsloo ,E (Emmanuel)	1	1187.8	1612.8	0	0	0	1	1141.6	1612.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Oosthuizen, L (Leon)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms