Chess South Africa Ratings Database

PLAYER PAGE

Personal

Serfontein, J (Jaco)

Chess SA id

186034183

FIDE id

Serfontein

Date of birth

1986-12-16 (Adult)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-09-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1902.8	1901.4	1935	1935
Raw rating	1902.8	1901.4	1935	1935
Weighted rating	1902.4	1901.1	1934.7	1934.4
Weighted performance	0	0	0	0
Floor	1402.8	1401.4	1435	1435
K-factor	24	24	24	24
Min/Max rating change allowed	60.9	61	58.2	58.2
Highest rating	1902.8 2024-02-01	1901.4 2024-02-01	1935 2024-02-01	1935 2024-02-01
Highest raw rating	1902.8 2024-02-01	1901.4 2024-02-01	1935 2024-02-01	1935 2024-02-01
Highest weighted rating	1901.6 2025-08-01	1900.3 2025-08-01	1933.8 2025-08-01	1933.1 2025-08-01
Highest weighted performance	1674.7 2022-02-01	1681.7 2022-02-01	1200 2024-02-01	1622.8 2022-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1902.8	1901.4	1935	1935
Analysis
Rating	1902.8	1901.4	1935	1935
Raw rating	1902.8	1901.4	1935	1935
Weighted rating	1902.4	1901.1	1934.7
Weighted performance	0	0	0
K-factor	24	24	24	24
Floor	1402.8	1401.4	1435	1435
Max/Min rating change allowed	60.9	61	58.2	58.2
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	1902.8	1901.4	1935	1935
New weighted rating	1902.7	1901.3	1934.9	1934.8
New weighted performance	0	0	0	0
Temp new rating	1902.8	1901.4	1935	1935
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1902.8	1901.4	1935	1935
New K-factor	24	24	24	24
New floor	1402.8	1401.4	1435	1435

Item	Main	Standard	Blitz
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	12	5	7
	0	0	0
History	19	12	7

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
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	12	8	66.67	141.7	1591.4	1733
Standard	5	2	40	-85	1756.8	1671.8
Rapid	0	0	0	0	0	0
Blitz	7	6	85.71	303.6	1473.2	1776.8

Date	Main	Standard	Rapid	Blitz
2025-09-30	1902.8	1901.4	1935	1935
2025-09-01	1902.8	1901.4	1935	1935
2025-08-01	1902.8	1901.4	1935	1935
2025-07-01	1902.8	1901.4	1935	1935
2025-06-01	1902.8	1901.4	1935	1935
2025-05-01	1902.8	1901.4	1935	1935
2025-04-01	1902.8	1901.4	1935	1935
2025-03-01	1902.8	1901.4	1935	1935
2025-02-01	1902.8	1901.4	1935	1935
2025-01-01	1902.8	1901.4	1935	1935
2024-12-01	1902.8	1901.4	1935	1935
2024-11-01	1902.8	1901.4	1935	1935
2024-10-01	1902.8	1901.4	1935	1935
2024-09-01	1902.8	1901.4	1935	1935
2024-08-01	1902.8	1901.4	1935	1935
2024-07-01	1902.8	1901.4	1935	1935
2024-06-01	1902.8	1901.4	1935	1935
2024-08-01	1902.8	1901.4	1935	1935
2024-04-01	1902.8	1901.4	1935	1935
2024-03-01	1902.8	1901.4	1935	1935
2024-02-01	1902.8	1901.4	1935	1935
2024-01-01	1902.8	1901.4	1935	1935
2023-12-01	1865.8	1868.3	1900	1877.4
2023-11-01	1865.8	1868.3	1900	1877.4

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	2022 Madibaz Tournament (Open Blitz)	2022-09-09	2022-09-09	Blitz	Nelson Mandela Bay (ENM)	7	7	6	Yes	Analysis
2	2022 Nelson Mandela Bay Open (A)	2022-01-28	2022-02-06	Standard	Nelson Mandela Bay (ENM)	9	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 7	type Blitz	result 1
		Opponent Kritzinger, A (Andre)				Opponent Muller, K (Kaden)
2	3	Tournament 2022 Nelson Mandela Bay Open				Tournament 2022 Nelson Mandela Bay Open
		date 2022-01-28	rnd 1	type Standard	result 1	date 2022-01-29	rnd 3	type Standard	result 0.5
		Opponent Nevin, TW (Tyler)				Opponent February, JN (Jesse)

#	Games	Start				End
1	3	Tournament 2022 Nelson Mandela Bay Open				Tournament 2022 Nelson Mandela Bay Open
		date 2022-01-28	rnd 1	type Standard	result 1	date 2022-01-29	rnd 3	type Standard	result 0.5
		Opponent Nevin, TW (Tyler)				Opponent February, JN (Jesse)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 7	type Blitz	result 1
		Opponent Kritzinger, A (Andre)				Opponent Muller, K (Kaden)

#	Games	Start				End
1	6	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 7	type Blitz	result 1
		Opponent Kritzinger, A (Andre)				Opponent Muller, K (Kaden)
2	1	Tournament 2022 Nelson Mandela Bay Open				Tournament 2022 Nelson Mandela Bay Open
		date 2022-01-28	rnd 1	type Standard	result 1	date 2022-01-28	rnd 1	type Standard	result 1
		Opponent Nevin, TW (Tyler)				Opponent Nevin, TW (Tyler)

#	Games	Start				End
1	1	Tournament 2022 Nelson Mandela Bay Open				Tournament 2022 Nelson Mandela Bay Open
		date 2022-01-28	rnd 1	type Standard	result 1	date 2022-01-28	rnd 1	type Standard	result 1
		Opponent Nevin, TW (Tyler)				Opponent Nevin, TW (Tyler)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 7	type Blitz	result 1
		Opponent Kritzinger, A (Andre)				Opponent Muller, K (Kaden)

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	Jacobs ,KT (Kevin Terence)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
1	Jacobs ,KT (Kevin Terence)	1	1792.8	1792.8	1	1800.1	1792.8	0	0	0	0	0	0
2	Nevin ,TW (Tyler William)	1	1	425	1	1	425	0	0	0	0	0	0
2	Nevin ,TW (Tyler William)	1	1702.7	2127.7	1	1719.9	2127.7	0	0	0	0	0	0
3	Jasson ,AJL (Alexander Joseph Luke)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Jasson ,AJL (Alexander Joseph Luke)	1	1785.1	1360.1	1	1795.7	1360.1	0	0	0	0	0	0
4	Badenhorst ,C (Chloe)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Badenhorst ,C (Chloe)	1	1641.8	1216.8	1	1648.2	1216.8	0	0	0	0	0	0
5	February ,JN (Jesse Nikki)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	February ,JN (Jesse Nikki)	1	1861.5	1861.5	1	1855.1	1861.5	0	0	0	0	0	0
6	Bezuidenhout ,N (Nigel)	1	1	425	0	0	0	0	0	0	1	1	425
6	Bezuidenhout ,N (Nigel)	1	1366.3	1791.3	0	0	0	0	0	0	1	1196	1791.3
7	Berrange ,AB (Anton)	1	0	-425	0	0	0	0	0	0	1	0	-425
7	Berrange ,AB (Anton)	1	1444.9	1019.9	0	0	0	0	0	0	1	1433.4	1019.9
8	Muller ,K (Kaden)	1	1	425	0	0	0	0	0	0	1	1	425
8	Muller ,K (Kaden)	1	1618.8	2043.8	0	0	0	0	0	0	1	1458.3	2043.8
9	Kritzinger ,A (Andre)	1	1	425	0	0	0	0	0	0	1	1	425
9	Kritzinger ,A (Andre)	1	1548.5	1973.5	0	0	0	0	0	0	1	1355.7	1973.5
10	Lagardien ,I (Ismaeel)	1	1	425	0	0	0	0	0	0	1	1	425
10	Lagardien ,I (Ismaeel)	1	1600.6	2025.6	0	0	0	0	0	0	1	1333.9	2025.6

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Serfontein, J (Jaco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms