Chess South Africa Ratings Database

PLAYER PAGE

Personal

Witbooi, S (Sergio)

Chess SA id

1110099718

FIDE id

Date of birth

2011-01-01 (U16)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1327.3	1327.8	1256	1200
Raw rating	1327.3	1327.8	1256	1200
Weighted rating	1327.3	1327.8	1256	1200
Weighted performance	277.3	269	0	0
Floor	827.5	828	756	700
K-factor	36	36	36	36
Min/Max rating change allowed	138.3	138.2	153.1	165.8
Highest rating	1355 2019-09-01	1354.1 2018-08-01	1447.8 2019-02-01	1200 2018-10-01
Highest raw rating	1327.5 2024-02-01	1328 2024-02-01	1256 2024-02-01	1200 2024-02-01
Highest weighted rating	1327.5 2024-02-01	1328 2024-02-01	1256 2025-02-01	1200 2018-10-01
Highest weighted performance	1355 2019-09-01	1354.1 2018-08-01	1447.8 2019-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1327.3	1327.8	1256	1200
Analysis
Rating	1327.3	1327.8	1256	1200
Raw rating	1327.3	1327.8	1256	1200
Weighted rating	1327.3	1327.8	1256
Weighted performance	277.3	269	0
K-factor	36	36	36	36
Floor	827.5	828	756	700
Max/Min rating change allowed	138.3	138.2	153.1	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	1327.3	1327.8	1256	1200
New weighted rating	1327.3	1327.8	1256	1200
New weighted performance	276.8	268.5	0	0
Temp new rating	1327.3	1327.8	1256	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1327.3	1327.8	1256	1200
New K-factor	36	36	36	36
New floor	827.5	828	756	700

Item	Main	Standard	Rapid
	0	0	0
	1	1	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	38	29	9

Games since
	Main 1	Standard 1		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	West Coast (WCU)
Province	Western Cape (WC)
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	1	0	0	-425	1200	775
Standard	1	0	0	-425	1200	775
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	38	24.5	64.47	123	1195.8	1318.8
Standard	29	18.5	63.79	117.2	1207.6	1324.8
Rapid	9	6	66.67	141.7	1157.8	1299.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1327.3	1327.8	1256	1200
2025-09-01	1327.3	1327.8	1256	1200
2025-08-01	1327.3	1327.8	1256	1200
2025-07-01	1327.3	1327.8	1256	1200
2025-06-01	1327.3	1327.8	1256	1200
2025-05-01	1327.2	1327.7	1256	1200
2025-04-01	1325.9	1326	1256	1200
2025-03-01	1327.5	1328	1256	1200
2025-02-01	1327.5	1328	1256	1200
2025-01-01	1327.5	1328	1256	1200
2024-12-01	1327.5	1328	1256	1200
2024-11-01	1327.5	1328	1256	1200
2024-10-01	1327.5	1328	1256	1200
2024-09-01	1327.5	1328	1256	1200
2024-08-01	1327.5	1328	1256	1200
2024-07-01	1327.5	1328	1256	1200
2024-06-01	1327.5	1328	1256	1200
2024-08-01	1327.5	1328	1256	1200
2024-04-01	1327.5	1328	1256	1200
2024-03-01	1327.5	1328	1256	1200
2024-02-01	1327.5	1328	1256	1200
2024-01-01	1327.5	1328	1256	1200
2023-12-01	1327.5	1328	1256	1200
2023-11-01	1327.5	1328	1256	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	Nababeep Chess Club Open 2025 (Candidates)	2025-03-08	2025-03-08	Standard	Namakwa (NCN)	5	1	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Nababeep Chess Club Open 2025 (Candidates)	2025-03-08	2025-03-08	Standard	Namakwa (NCN)	5	1	0	Yes	Analysis
2	Western Cape Top Schools 2019 (U9 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
3	Western Cape Schools Individuals 2019 (U9 Boys)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	3	Yes	Analysis
4	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O9 Seuns)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
5	Bo-Weskus Skole Skaak Prestige 2019 (O9 Seuns)	2019-02-16	2019-02-16	Rapid	West Coast (WCU)	7	4	4	Yes	Analysis
6	Back 2 School 2019 (U8)	2019-01-19	2019-01-19	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
7	Western Cape Top Schools 2018 (U7+U9 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
8	West Coast Schools Prestige Individual Championship 2018 (U7 Boys)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Top Schools 2019
		date 2019-05-19	rnd 6	type Standard	result 1	date 2019-09-01	rnd 5	type Standard	result 1
		Opponent Godbeer, M (Michael)				Opponent Arpin, L (Lukas)
2	5	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2019-02-16	rnd 1	type Rapid	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Hollenbaght, OJ (Owen James)				Opponent November, J (Jovanni)
3	4	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament Western Cape Top Schools 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-08-25	rnd 2	type Standard	result 1
		Opponent Peters, C (Chantel)				Opponent Booysen, L (Lukas)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Top Schools 2019
		date 2019-05-19	rnd 6	type Standard	result 1	date 2019-09-01	rnd 5	type Standard	result 1
		Opponent Godbeer, M (Michael)				Opponent Arpin, L (Lukas)
2	4	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament Western Cape Top Schools 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-08-25	rnd 2	type Standard	result 1
		Opponent Peters, C (Chantel)				Opponent Booysen, L (Lukas)
3	3	Tournament Western Cape Top Schools 2018				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2018-08-26	rnd 4	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Mazari, M (Mahdi)				Opponent November, J (Jovanni)

#	Games	Start				End
1	4	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Bo-Weskus Skole Skaak Prestige 2019
		date 2019-02-16	rnd 1	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Hollenbaght, OJ (Owen James)				Opponent Strauss, J (Johan)
2	2	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 2	type Rapid	result 1	date 2019-01-19	rnd 3	type Rapid	result 1
		Opponent Lewaks, A (Andrea)				Opponent Cloete, K (Kayden)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Top Schools 2019
		date 2019-05-19	rnd 6	type Standard	result 1	date 2019-09-01	rnd 5	type Standard	result 1
		Opponent Godbeer, M (Michael)				Opponent Arpin, L (Lukas)
2	5	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2019-02-16	rnd 1	type Rapid	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Hollenbaght, OJ (Owen James)				Opponent November, J (Jovanni)
3	2	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-18	rnd 3	type Standard	result 1	date 2019-05-18	rnd 4	type Standard	result 1
		Opponent Visagie, T (Thomas)				Opponent Booysen, L (Lukas)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Top Schools 2019
		date 2019-05-19	rnd 6	type Standard	result 1	date 2019-09-01	rnd 5	type Standard	result 1
		Opponent Godbeer, M (Michael)				Opponent Arpin, L (Lukas)
2	3	Tournament Western Cape Top Schools 2018				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2018-08-26	rnd 4	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Mazari, M (Mahdi)				Opponent November, J (Jovanni)
3	2	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-18	rnd 3	type Standard	result 1	date 2019-05-18	rnd 4	type Standard	result 1
		Opponent Visagie, T (Thomas)				Opponent Booysen, L (Lukas)

#	Games	Start				End
1	4	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Bo-Weskus Skole Skaak Prestige 2019
		date 2019-02-16	rnd 1	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Hollenbaght, OJ (Owen James)				Opponent Strauss, J (Johan)
2	2	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 2	type Rapid	result 1	date 2019-01-19	rnd 3	type Rapid	result 1
		Opponent Lewaks, A (Andrea)				Opponent Cloete, K (Kayden)

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	Booysen ,L (Lukas)	2	2	425	2	2	425	0	0	0	0	0	0
1	Booysen ,L (Lukas)	2	1292.8	1717.8	2	1292.8	1717.8	0	0	0	0	0	0
2	Strauss ,J (Johan)	2	1	0	1	0	-425	1	1	425	0	0	0
2	Strauss ,J (Johan)	2	1211.4	1211.4	1	1200	786.4	1	1200	1636.4	0	0	0
3	Booysen ,C (Chadlin)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Booysen ,C (Chadlin)	2	1193.2	768.2	1	1200	768.2	1	1123.2	768.2	0	0	0
4	Cardinal ,J (Jacelynn)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
4	Cardinal ,J (Jacelynn)	2	1180.3	967.8	1	1200	1180.3	1	1214	755.3	0	0	0
5	Oosthuizen ,C (Conrad)	1	1	425	1	1	425	0	0	0	0	0	0
5	Oosthuizen ,C (Conrad)	1	1198.3	1623.3	1	1200	1623.3	0	0	0	0	0	0
6	Parker ,T (Ty)	1	1	425	1	1	425	0	0	0	0	0	0
6	Parker ,T (Ty)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Solomon ,N (Noah)	1	1	425	1	1	425	0	0	0	0	0	0
7	Solomon ,N (Noah)	1	1172.2	1597.2	1	1142.8	1597.2	0	0	0	0	0	0
8	Augustyn ,J (Johan)	1	1	425	1	1	425	0	0	0	0	0	0
8	Augustyn ,J (Johan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Maarman ,B (Blayden)	1	1	425	1	1	425	0	0	0	0	0	0
9	Maarman ,B (Blayden)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Arpin ,L (Lukas)	1	1	425	1	1	425	0	0	0	0	0	0
10	Arpin ,L (Lukas)	1	1385.6	1810.6	1	1385.9	1810.6	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

Witbooi, S (Sergio)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms