Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Klerk, S (Sebastian)

Chess SA id

1060136969

FIDE id

Date of birth

2006-09-24 (U20)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-02-24

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1275	1282.3	1203.6	1200
Raw rating	1275	1282.3	1203.6	1200
Weighted rating	1274.1	1281.2	1203.6	1200
Weighted performance	0	0	0	0
Floor	775	782.3	703.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	149	147.5	165	165.8
Highest rating	1275 2024-03-01	1295.1 2024-02-01	1214.6 2022-03-01	1200 2018-10-01
Highest raw rating	1275 2024-03-01	1282.3 2024-03-01	1203.6 2024-02-01	1200 2024-02-01
Highest weighted rating	1271.9 2025-08-01	1278.4 2025-08-01	1203.6 2025-02-01	1200 2018-10-01
Highest weighted performance	1228.7 2024-02-01	1295.1 2024-02-01	1214.6 2022-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1275	1282.3	1203.6	1200
Analysis
Rating	1275	1282.3	1203.6	1200
Raw rating	1275	1282.3	1203.6	1200
Weighted rating	1274.1	1281.2	1203.6
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	775	782.3	703.6	700
Max/Min rating change allowed	149	147.5	165	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	1275	1282.3	1203.6	1200
New weighted rating	1274.6	1281.7	1203.6	1200
New weighted performance	0	0	0	0
Temp new rating	1275	1282.3	1203.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1275	1282.3	1203.6	1200
New K-factor	36	36	36	36
New floor	775	782.3	703.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	5	0
	5	5	0
	11	5	6
	0	0	0
History	21	15	6

Games since
	Main 5	Standard 5		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	21	12.5	59.52	81	1224.9	1305.9
Standard	15	9.5	63.33	113.3	1224.5	1337.8
Rapid	6	3	50	0	1226.1	1226.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1275	1282.3	1203.6	1200
2025-09-30	1275	1282.3	1203.6	1200
2025-09-01	1275	1282.3	1203.6	1200
2025-08-01	1275	1282.3	1203.6	1200
2025-07-01	1275	1282.3	1203.6	1200
2025-06-01	1275	1282.3	1203.6	1200
2025-05-01	1275	1282.3	1203.6	1200
2025-04-01	1275	1282.3	1203.6	1200
2025-03-01	1275	1282.3	1203.6	1200
2025-02-01	1275	1282.3	1203.6	1200
2025-01-01	1275	1282.3	1203.6	1200
2024-12-01	1275	1282.3	1203.6	1200
2024-11-01	1275	1282.3	1203.6	1200
2024-10-01	1275	1282.3	1203.6	1200
2024-09-01	1275	1282.3	1203.6	1200
2024-08-01	1275	1282.3	1203.6	1200
2024-07-01	1275	1282.3	1203.6	1200
2024-09-01	1275	1282.3	1203.6	1200
2024-05-01	1275	1282.3	1203.6	1200
2024-04-01	1275	1282.3	1203.6	1200
2024-03-01	1275	1282.3	1203.6	1200
2024-02-01	1230.2	1227.2	1203.6	1200
2024-01-01	1230.2	1227.2	1203.6	1200
2023-12-01	1230.2	1227.2	1203.6	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	Grey College Team Championship 2024 (B)	2024-02-23	2024-02-24	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
2	Grey College Team Championship 2023 (B)	2023-02-03	2023-02-04	Standard	Mangaung (FMB)	5	5	3.5	Yes	Analysis
3	WP Schools Chess District South 2022 (U18)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
4	Grey College Team Championship 2022 (A)	2022-02-18	2022-02-19	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis

#	Games	Start				End
1	7	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2024
		date 2023-02-03	rnd 2	type Standard	result 1	date 2024-02-23	rnd 3	type Standard	result 1
		Opponent Van Der Merwe, C (Clara)				Opponent Keyser, H (Hendre Etienne)
2	2	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 2	type Rapid	result 1
		Opponent Xatasi, A (Awethu)				Opponent Van Gusling, J (Jordan)
3	1	Tournament Grey College Team Championship 2024				Tournament Grey College Team Championship 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-02-24	rnd 5	type Standard	result 1
		Opponent Snydert, S (Stefan)				Opponent Snydert, S (Stefan)

#	Games	Start				End
1	7	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2024
		date 2023-02-03	rnd 2	type Standard	result 1	date 2024-02-23	rnd 3	type Standard	result 1
		Opponent Van Der Merwe, C (Clara)				Opponent Keyser, H (Hendre Etienne)
2	1	Tournament Grey College Team Championship 2024				Tournament Grey College Team Championship 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-02-24	rnd 5	type Standard	result 1
		Opponent Snydert, S (Stefan)				Opponent Snydert, S (Stefan)
3	1	Tournament Grey College Team Championship 2022				Tournament Grey College Team Championship 2022
		date 2022-02-19	rnd 4	type Standard	result 1	date 2022-02-19	rnd 4	type Standard	result 1
		Opponent Becker, J (Jacques)				Opponent Becker, J (Jacques)

#	Games	Start				End
1	2	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 2	type Rapid	result 1
		Opponent Xatasi, A (Awethu)				Opponent Van Gusling, J (Jordan)
2	1	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Erasmus, J (Jaren)				Opponent Erasmus, J (Jaren)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2024
		date 2023-02-04	rnd 5	type Standard	result 1	date 2024-02-23	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Keyser, H (Hendre Etienne)
2	2	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2023
		date 2023-02-03	rnd 2	type Standard	result 1	date 2023-02-03	rnd 3	type Standard	result 1
		Opponent Van Der Merwe, C (Clara)				Opponent Ledwaba, K (Kheino)
3	2	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 2	type Rapid	result 1
		Opponent Xatasi, A (Awethu)				Opponent Van Gusling, J (Jordan)

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2024
		date 2023-02-04	rnd 5	type Standard	result 1	date 2024-02-23	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Keyser, H (Hendre Etienne)
2	2	Tournament Grey College Team Championship 2023				Tournament Grey College Team Championship 2023
		date 2023-02-03	rnd 2	type Standard	result 1	date 2023-02-03	rnd 3	type Standard	result 1
		Opponent Van Der Merwe, C (Clara)				Opponent Ledwaba, K (Kheino)
3	1	Tournament Grey College Team Championship 2024				Tournament Grey College Team Championship 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-02-24	rnd 5	type Standard	result 1
		Opponent Snydert, S (Stefan)				Opponent Snydert, S (Stefan)

#	Games	Start				End
1	2	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 2	type Rapid	result 1
		Opponent Xatasi, A (Awethu)				Opponent Van Gusling, J (Jordan)
2	1	Tournament WP Schools Chess District South 2022				Tournament WP Schools Chess District South 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Erasmus, J (Jaren)				Opponent Erasmus, J (Jaren)

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	Mlozana ,L (Luthando)	1	1	425	1	1	425	0	0	0	0	0	0
1	Mlozana ,L (Luthando)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Van Der Merwe ,C (Clara)	1	1	425	1	1	425	0	0	0	0	0	0
2	Van Der Merwe ,C (Clara)	1	1237.2	1662.2	1	1234	1662.2	0	0	0	0	0	0
3	Becker ,J (Jacques)	1	1	425	1	1	425	0	0	0	0	0	0
3	Becker ,J (Jacques)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Snybert ,S (Stefan)	1	1	425	1	1	425	0	0	0	0	0	0
4	Snybert ,S (Stefan)	1	1207.6	1632.6	1	1200	1632.6	0	0	0	0	0	0
5	Viviers ,H (Hanr�)	1	1	425	1	1	425	0	0	0	0	0	0
5	Viviers ,H (Hanr�)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Marnitz ,K (Keenan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Marnitz ,K (Keenan)	1	1271	846	1	1277	846	0	0	0	0	0	0
7	Ndewere ,N (Nissi)	1	1	425	1	1	425	0	0	0	0	0	0
7	Ndewere ,N (Nissi)	1	1165	1590	1	1157.2	1590	0	0	0	0	0	0
8	Mohobane ,L (Lebajoa)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mohobane ,L (Lebajoa)	1	1237.3	1662.3	1	1185.6	1662.3	0	0	0	0	0	0
9	Shi ,C (Chip)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Shi ,C (Chip)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Read ,R (Ross)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Read ,R (Ross)	1	1200	1200	1	1200	1200	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

De Klerk, S (Sebastian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms