Chess South Africa Ratings Database

PLAYER PAGE

Personal

Matthews, J (Johaydan)

Chess SA id

1110148192

FIDE id

Date of birth

2011-05-12 (U16)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-03-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1194	1182	1206.8	1200
Raw rating	1194	1182	1206.8	1200
Weighted rating	1193.4	1181.7	1206.6	1200
Weighted performance	0	0	0	0
Floor	700	700	706.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	167.2	170.1	164.2	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1231.6 2024-02-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2020-01-01	1206.8 2024-03-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1206.3 2025-08-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1231.6 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1194	1182	1206.8	1200
Analysis
Rating	1194	1182	1206.8	1200
Raw rating	1194	1182	1206.8	1200
Weighted rating	1193.4	1181.7	1206.6
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	706.8	700
Max/Min rating change allowed	167.2	170.1	164.2	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	1194	1182	1206.8	1200
New weighted rating	1193.7	1181.8	1206.7	1200
New weighted performance	0	0	0	0
Temp new rating	1194	1182	1206.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1194	1182	1206.8	1200
New K-factor	36	36	36	36
New floor	700	700	706.8	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	11	5	6
	0	0	0
	1	1	0
	0	0	0
History	12	6	6

Games since
	Main 11	Standard 5		Rapid 6		Blitz 0
Gender	Male
Age group	U16
Region	Cape Winelands (WCW)
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	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	5	41.67	-70.8	1254.7	1183.9
Standard	6	2	33.33	-141.7	1273.2	1131.6
Rapid	6	3	50	0	1236.2	1236.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1194	1182	1206.8	1200
2025-09-01	1194	1182	1206.8	1200
2025-08-01	1194	1182	1206.8	1200
2025-07-01	1194	1182	1206.8	1200
2025-06-01	1194	1182	1206.8	1200
2025-05-01	1194	1182	1206.8	1200
2025-04-01	1194	1182	1206.8	1200
2025-03-01	1194	1182	1206.8	1200
2025-02-01	1194	1182	1206.8	1200
2025-01-01	1194	1182	1206.8	1200
2024-12-01	1194	1182	1206.8	1200
2024-11-01	1194	1182	1206.8	1200
2024-10-01	1194	1182	1206.8	1200
2024-09-01	1194	1182	1206.8	1200
2024-08-01	1194	1182	1206.8	1200
2024-07-01	1194	1182	1206.8	1200
2024-06-01	1194	1182	1206.8	1200
2024-08-01	1194	1182	1206.8	1200
2024-04-01	1194	1182	1206.8	1200
2024-03-01	1190	1175.6	1206.8	1200
2024-02-01	1179.4	1175.6	1200	1200
2024-01-01	1179.4	1175.6	1200	1200
2023-12-01	1179.4	1175.6	1200	1200
2023-11-01	1179.4	1175.6	1200	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	Cape Winelands Schools - Prestige 2024 (U13 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Cape Winelands Schools - PS Trials 1 2024 (U13 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	Drakenstein Pioneers Club Championship 2022 (U14)	2022-09-20	2022-10-11	Standard	Cape Winelands (WCW)	7	1	0	Yes	Analysis

#	Games	Start				End
1	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 4	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Jacobs, P (Pierre)
2	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 4	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Van Wyk, C (Caylem)				Opponent Van Wyk, C (Caylem)
3	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Arendse, A (Ashton Lee)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 4	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Van Wyk, C (Caylem)				Opponent Van Wyk, C (Caylem)
2	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Arendse, A (Ashton Lee)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 4	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Jacobs, P (Pierre)
2	1	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent Lotz, T (Tyler)				Opponent Lotz, T (Tyler)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 4	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Jacobs, P (Pierre)
2	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 4	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Van Wyk, C (Caylem)				Opponent Van Wyk, C (Caylem)
3	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Arendse, A (Ashton Lee)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 4	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Van Wyk, C (Caylem)				Opponent Van Wyk, C (Caylem)
2	1	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-02	rnd 2	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Arendse, A (Ashton Lee)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 4	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Jacobs, P (Pierre)
2	1	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent Lotz, T (Tyler)				Opponent Lotz, T (Tyler)

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	Smith ,J (James)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Smith ,J (James)	2	1402.1	977.1	1	1393.3	977.1	1	1269	977.1	0	0	0
2	Small ,Q (Quade)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Small ,Q (Quade)	1	1409.8	984.8	1	1408	984.8	0	0	0	0	0	0
3	Arendse ,A (Ashton Lee)	1	1	425	1	1	425	0	0	0	0	0	0
3	Arendse ,A (Ashton Lee)	1	1207.9	1632.9	1	1200	1632.9	0	0	0	0	0	0
4	Goosen ,J (Jeandre)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Goosen ,J (Jeandre)	1	1278.1	853.1	1	1265.2	853.1	0	0	0	0	0	0
5	Adams ,M (Meacke)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Adams ,M (Meacke)	1	1130.4	705.4	1	1141.6	705.4	0	0	0	0	0	0
6	Van Wyk ,C (Caylem)	1	1	425	1	1	425	0	0	0	0	0	0
6	Van Wyk ,C (Caylem)	1	1213.4	1638.4	1	1213.2	1638.4	0	0	0	0	0	0
7	Fortuin ,H (Haywill)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Fortuin ,H (Haywill)	1	1228.7	803.7	0	0	0	1	1252.9	803.7	0	0	0
8	Groenewald ,C (Carlyle)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Groenewald ,C (Carlyle)	1	1199.7	774.7	0	0	0	1	1200	774.7	0	0	0
9	Jacobs ,P (Pierre)	1	1	425	0	0	0	1	1	425	0	0	0
9	Jacobs ,P (Pierre)	1	1256	1681	0	0	0	1	1244.8	1681	0	0	0
10	Jacobs ,Z (Zuan-Lee)	1	1	425	0	0	0	1	1	425	0	0	0
10	Jacobs ,Z (Zuan-Lee)	1	1128.6	1553.6	0	0	0	1	1200	1553.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Matthews, J (Johaydan)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms