Chess South Africa Ratings Database

PLAYER PAGE

Personal

Weng, S (Sebastian)

Chess SA id

1150158250

FIDE id

Date of birth

2015-03-12 (U12)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-10

Personal details last changed

1900-01-01

Junior GPX Games

26.8

Junior GPX Points

1361.8

Item	Main	Standard	Rapid	Blitz
Rating	1445.1	1457.3	1205.8	1200
Raw rating	1445.1	1457.3	1205.8	1200
Weighted rating	1337.1	1352.2	1203.2	1200
Weighted performance	1443.6	1443.3	0	0
Floor	945.1	957.3	705.8	700
K-factor	32	32	36	36
Min/Max rating change allowed	116.9	114.9	164.5	165.8
Highest rating	1550.8 2024-07-01	1551.8 2024-07-01	1205.8 2025-03-01	1200 2018-10-01
Highest raw rating	1445.1 2025-09-01	1457.3 2025-09-01	1205.8 2025-03-01	1200 2024-02-01
Highest weighted rating	1324.4 2025-09-01	1339.4 2025-09-01	1202.5 2025-08-01	1200 2018-10-01
Highest weighted performance	1550.8 2024-07-01	1551.8 2024-07-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1445.1	1457.3	1205.8	1200
Analysis
Rating	1445.1	1457.3	1205.8	1200
Raw rating	1445.1	1457.3	1205.8	1200
Weighted rating	1337.1	1352.2	1203.2
Weighted performance	1443.6	1443.3	0
K-factor	32	32	36	36
Floor	945.1	957.3	705.8	700
Max/Min rating change allowed	116.9	114.9	164.5	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	1445.1	1457.3	1205.8	1200
New weighted rating	1349.1	1364.1	1203.5	1200
New weighted performance	1443.1	1442.8	0	0
Temp new rating	1445.1	1457.3	1205.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1445.1	1457.3	1205.8	1200
New K-factor	32	32	36	36
New floor	945.1	957.3	705.8	700

Item	Main	Standard	Rapid
	0	0	0
	32	25	7
	10	10	0
	0	0	0
	0	0	0
	0	0	0
History	42	35	7

Games since
	Main 42	Standard 35		Rapid 7		Blitz 0
Gender	Male
Age group	U12
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1710		592		197
Male	1442		486		164
U12	206		76		24
U12 Male	148		50		20
Standard
	RSA		Province		Region
Overall	1500		552		182
Male	1258		450		152
U12	176		72		23
U12 Male	126		46		19
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	32	17	53.12	26.6	1406.5	1433.1
Standard	25	14	56	51	1421.5	1472.5
Rapid	7	3	42.86	-60.7	1353.1	1292.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	42	24.5	58.33	70.8	1387.6	1458.4
Standard	35	21.5	61.43	97.1	1394.5	1491.6
Rapid	7	3	42.86	-60.7	1353.1	1292.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1445.1	1457.3	1205.8	1200
2025-09-01	1445.1	1457.3	1205.8	1200
2025-08-01	1431.6	1445.5	1205.8	1200
2025-07-01	1385.8	1389.6	1205.8	1200
2025-06-01	1385.8	1389.6	1205.8	1200
2025-05-01	1313.8	1336.5	1205.8	1200
2025-04-01	1313.8	1336.5	1205.8	1200
2025-03-01	1306.2	1332.1	1205.8	1200
2025-02-01	1310.3	1332.1	1200	1200
2025-01-01	1310.3	1332.1	1200	1200
2024-12-01	1310.3	1332.1	1200	1200
2024-11-01	1310.3	1332.1	1200	1200
2024-10-01	1310.3	1332.1	1200	1200
2024-09-01	1310.3	1332.1	1200	1200
2024-08-01	1310.3	1332.1	1200	1200
2024-07-01	1250.2	1262.6	1200	1200
2024-06-01	1250.2	1262.6	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	JMC Closed 2025 (U12)	2025-08-09	2025-08-10	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
2	JMC - Trinity Randpark Ridge 2025 (U12)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
3	South African Open 2025 (U12 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
4	JMC Crawford Sandton 2025 (U12)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
5	JMC Crawford Ruimsig 2025 (U12)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
6	JMC Rapid The Bridge School 2025 (Open)	2025-02-23	2025-02-23	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JMC Closed 2025 (U12)	2025-08-09	2025-08-10	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
2	JMC - Trinity Randpark Ridge 2025 (U12)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
3	South African Open 2025 (U12 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
4	JMC Crawford Sandton 2025 (U12)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
5	JMC Crawford Ruimsig 2025 (U12)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
6	JMC Rapid The Bridge School 2025 (Open)	2025-02-23	2025-02-23	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
7	JMC Trinityhouse Randpark Ridge 2024 (U10)	2024-07-13	2024-07-13	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
8	JMC Crawford International Sandton 2024 (U10)	2024-05-11	2024-05-11	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament South African Open 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mulholland, O (Otto)				Opponent Zhu, R (Ryan Yuancheng)
2	4	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Crawford Ruimsig 2025
		date 2025-02-23	rnd 6	type Rapid	result 1	date 2025-03-01	rnd 2	type Standard	result 0.5
		Opponent Simao, A (Arya)				Opponent Zhu, R (Ryan Yuancheng)
3	4	Tournament JMC Trinityhouse Randpark Ridge 2024				Tournament JMC Trinityhouse Randpark Ridge 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-13	rnd 5	type Standard	result 1
		Opponent Loots, A (Albert)				Opponent Lin, Y (Yizheng)

#	Games	Start				End
1	6	Tournament JMC Trinityhouse Randpark Ridge 2024				Tournament JMC Crawford Ruimsig 2025
		date 2024-07-13	rnd 2	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 0.5
		Opponent Loots, A (Albert)				Opponent Zhu, R (Ryan Yuancheng)
2	4	Tournament South African Open 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mulholland, O (Otto)				Opponent Zhu, R (Ryan Yuancheng)
3	3	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 2	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Sekwaila, B (Boikie)				Opponent Zhu, R (Ryan Yuancheng)

#	Games	Start				End
1	2	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Rapid The Bridge School 2025
		date 2025-02-23	rnd 6	type Rapid	result 1	date 2025-02-23	rnd 7	type Rapid	result 1
		Opponent Simao, A (Arya)				Opponent Chen, Z (Zoey)
2	1	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Rapid The Bridge School 2025
		date 2025-02-23	rnd 2	type Rapid	result 1	date 2025-02-23	rnd 2	type Rapid	result 1
		Opponent Manganyi, X (Xitlhangu)				Opponent Manganyi, X (Xitlhangu)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament JMC Trinityhouse Randpark Ridge 2024				Tournament JMC Trinityhouse Randpark Ridge 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-13	rnd 5	type Standard	result 1
		Opponent Loots, A (Albert)				Opponent Lin, Y (Yizheng)
2	3	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 2	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Sekwaila, B (Boikie)				Opponent Zhu, R (Ryan Yuancheng)
3	3	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Crawford Ruimsig 2025
		date 2025-02-23	rnd 6	type Rapid	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Simao, A (Arya)				Opponent Maduna, A (Asanda)

#	Games	Start				End
1	5	Tournament JMC Trinityhouse Randpark Ridge 2024				Tournament JMC Crawford Ruimsig 2025
		date 2024-07-13	rnd 2	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Loots, A (Albert)				Opponent Maduna, A (Asanda)
2	3	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 2	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Sekwaila, B (Boikie)				Opponent Zhu, R (Ryan Yuancheng)
3	3	Tournament JMC Crawford International Sandton 2024				Tournament JMC Crawford International Sandton 2024
		date 2024-05-11	rnd 1	type Standard	result 1	date 2024-05-11	rnd 3	type Standard	result 1
		Opponent Daniels, U (Uriel)				Opponent Du Pisani, M (Malcom)

#	Games	Start				End
1	2	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Rapid The Bridge School 2025
		date 2025-02-23	rnd 6	type Rapid	result 1	date 2025-02-23	rnd 7	type Rapid	result 1
		Opponent Simao, A (Arya)				Opponent Chen, Z (Zoey)
2	1	Tournament JMC Rapid The Bridge School 2025				Tournament JMC Rapid The Bridge School 2025
		date 2025-02-23	rnd 2	type Rapid	result 1	date 2025-02-23	rnd 2	type Rapid	result 1
		Opponent Manganyi, X (Xitlhangu)				Opponent Manganyi, X (Xitlhangu)

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	Zhu ,R (Ryan Yuancheng)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	Zhu ,R (Ryan Yuancheng)	3	1460	1743.4	3	1470.5	1743.4	0	0	0	0	0	0
2	Goncalves ,E (Emilio)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Goncalves ,E (Emilio)	2	1665.4	1240.4	2	1667.6	1240.4	0	0	0	0	0	0
3	Thorulsley ,K (Kairaav)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Thorulsley ,K (Kairaav)	2	1744.8	1319.8	2	1743	1319.8	0	0	0	0	0	0
4	Motsamai ,OB (Ontlametse Bokamoso)	2	1	0	2	1	0	0	0	0	0	0	0
4	Motsamai ,OB (Ontlametse Bokamoso)	2	1441.2	1441.2	2	1437.8	1441.2	0	0	0	0	0	0
5	Maduna ,A (Asanda)	2	2	425	2	2	425	0	0	0	0	0	0
5	Maduna ,A (Asanda)	2	1196.8	1621.8	2	1196.7	1621.8	0	0	0	0	0	0
6	Kilari ,S (Suveer)	1	1	425	1	1	425	0	0	0	0	0	0
6	Kilari ,S (Suveer)	1	1108.3	1533.3	1	1100	1533.3	0	0	0	0	0	0
7	Conradie ,M (Minka)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Conradie ,M (Minka)	1	1467.9	1467.9	1	1466.7	1467.9	0	0	0	0	0	0
8	Finnemore ,E (Ewan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Finnemore ,E (Ewan)	1	1603.1	1178.1	1	1603	1178.1	0	0	0	0	0	0
9	Sekwaila ,B (Boikie)	1	1	425	1	1	425	0	0	0	0	0	0
9	Sekwaila ,B (Boikie)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Gupta ,A (Avyan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Gupta ,A (Avyan)	1	1193.8	1618.8	1	1191.8	1618.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Weng, S (Sebastian)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms