Chess South Africa Ratings Database

PLAYER PAGE

Personal

Griffiths, J (Jonathan)

Chess SA id

1150301509

FIDE id

Date of birth

2015-05-26 (U12)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1244.7	1216.3	1263.2	1200
Raw rating	1244.7	1216.3	1255	1200
Weighted rating	1229.9	1195.9	1263.2	1200
Weighted performance	1124.3	0	0	0
Floor	744.7	716.3	772	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.6	162	153.3	165.8
Highest rating	1366.8 2024-04-01	1216.3 2025-09-01	1440.6 2024-04-01	1200 2024-04-01
Highest raw rating	1244.7 2025-09-01	1216.3 2025-09-01	1272 2024-05-01	1200 2024-04-01
Highest weighted rating	1243.3 2024-06-01	1200 2024-04-01	1272 2024-10-01	1200 2024-04-01
Highest weighted performance	1366.8 2024-04-01	1200 2024-04-01	1440.6 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1244.7	1216.3	1263.2	1200
Analysis
Rating	1244.7	1216.3	1263.2	1200
Raw rating	1244.7	1216.3	1255	1200
Weighted rating	1229.9	1195.9	1263.2
Weighted performance	1124.3	0	0
K-factor	36	36	36	36
Floor	744.7	716.3	772	700
Max/Min rating change allowed	155.6	162	153.3	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	1244.7	1216.3	1255	1200
New weighted rating	1231.5	1197.6	1263.2	1200
New weighted performance	1117.3	0	0	0
Temp new rating	1244.7	1216.3	1263.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1244.7	1216.3	1263.2	1200
New K-factor	36	36	36	36
New floor	744.7	716.3	772	700

Item	Main	Standard	Rapid
	0	0	0
	14	5	9
	14	5	9
	0	0	0
	0	0	0
	0	0	0
History	28	10	18

Games since
	Main 28	Standard 10		Rapid 18		Blitz 0
Gender	Male
Age group	U12
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
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	14	6	42.86	-60.7	1257.9	1197.2
Standard	5	2.5	50	0	1303.5	1303.5
Rapid	9	3.5	38.89	-94.4	1232.6	1138.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	28	14.5	51.79	15.2	1235	1250.2
Standard	10	4.5	45	-42.5	1271.4	1228.9
Rapid	18	10	55.56	47.2	1214.7	1261.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1244.7	1216.3	1255	1200
2025-09-30	1244.7	1216.3	1255	1200
2025-09-01	1244.7	1216.3	1255	1200
2025-08-01	1224.1	1191.3	1261.7	1200
2025-07-01	1222	1191.3	1257.5	1200
2025-06-01	1226.6	1191.3	1272	1200
2025-05-01	1226.6	1191.3	1272	1200
2025-04-01	1226.6	1191.3	1272	1200
2025-03-01	1226.6	1191.3	1272	1200
2025-02-01	1226.6	1191	1272	1200
2025-01-01	1226.6	1183.6	1272	1200
2024-12-01	1226.6	1183.6	1272	1200
2024-11-01	1226.6	1183.6	1272	1200
2024-10-01	1226.6	1183.6	1272	1200
2024-09-01	1226.6	1183.6	1272	1200
2024-08-01	1226.6	1183.6	1272	1200
2024-07-01	1226.6	1183.6	1272	1200
2024-09-01	1243.3	1200	1272	1200
2024-05-01	1243.3	1200	1272	1200
2024-04-01	1212.2	1200	1221.6	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

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	Ekurhuleni North Schools Teams 2025 (U11)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
2	Kempton Park Team Clusters LS 2025 (U11)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	5	4	2	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U11)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni North Schools Teams 2025 (U11)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
2	Kempton Park Team Clusters LS 2025 (U11)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	5	4	2	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U11)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
4	Ekurhuleni North Primary Schools District Individual Finals 2024 (U9 Boys)	2024-05-11	2024-05-11	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
5	Kempton Park Cluster Teams League 2024 (U9B)	2024-04-13	2024-04-13	Rapid	Ekurhuleni (GE)	5	4	3.5	Yes	Analysis
6	Kempton Park Cluster Individuals 2024 (U9 Boys)	2024-03-02	2024-03-02	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Kempton Park Cluster Individuals 2024				Tournament Ekurhuleni North Primary Schools District Individual Finals 2024
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2024-05-11	rnd 1	type Standard	result 1
		Opponent Lamola, L (Leago)				Opponent Motloe, M (Mbuso)
2	2	Tournament Kempton Park Team Clusters LS 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-07-26	rnd 5	type Rapid	result 1	date 2025-08-16	rnd 1	type Standard	result 0.5
		Opponent Venter, M (Mckenzie)				Opponent Schrieber, I (Ian)
3	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 5	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Rossouw, L (Lience)				Opponent Rossouw, L (Lience)

#	Games	Start				End
1	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 5	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Rossouw, L (Lience)				Opponent Rossouw, L (Lience)
2	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Molomo, O (Onthatile)				Opponent Molomo, O (Onthatile)
3	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 0.5	date 2025-08-16	rnd 1	type Standard	result 0.5
		Opponent Schrieber, I (Ian)				Opponent Schrieber, I (Ian)

#	Games	Start				End
1	5	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2024-04-13	rnd 5	type Rapid	result 0.5
		Opponent Lamola, L (Leago)				Opponent Steyn, J (Jaco)
2	1	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 5	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Venter, M (Mckenzie)				Opponent Venter, M (Mckenzie)
3	1	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 2	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Van Tonder, S (Stian)				Opponent Van Tonder, S (Stian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2024-04-13	rnd 4	type Rapid	result 1
		Opponent Lamola, L (Leago)				Opponent Bernhardt, A (Amy-Leigh)
2	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 5	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Rossouw, L (Lience)				Opponent Rossouw, L (Lience)
3	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Molomo, O (Onthatile)				Opponent Molomo, O (Onthatile)

#	Games	Start				End
1	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 5	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Rossouw, L (Lience)				Opponent Rossouw, L (Lience)
2	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Molomo, O (Onthatile)				Opponent Molomo, O (Onthatile)
3	1	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Ekurhuleni North Primary Schools District Individual Finals 2024
		date 2024-05-11	rnd 3	type Standard	result 1	date 2024-05-11	rnd 3	type Standard	result 1
		Opponent Tsagane, O (Omphile)				Opponent Tsagane, O (Omphile)

#	Games	Start				End
1	4	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2024-04-13	rnd 4	type Rapid	result 1
		Opponent Lamola, L (Leago)				Opponent Bernhardt, A (Amy-Leigh)
2	1	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 5	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Venter, M (Mckenzie)				Opponent Venter, M (Mckenzie)
3	1	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 2	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Van Tonder, S (Stian)				Opponent Van Tonder, S (Stian)

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	Hatton ,J (James Michael)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Hatton ,J (James Michael)	2	1258.8	833.8	1	1225.2	833.8	1	1200	833.8	0	0	0
2	Ngcongolo ,Z (Zanothando)	2	0	-425	1	0	-425	1	0	-425	0	0	0
2	Ngcongolo ,Z (Zanothando)	2	1394.5	969.5	1	1394.6	969.5	1	1253.2	969.5	0	0	0
3	Chueu ,T (Tio)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Chueu ,T (Tio)	1	1302.2	877.2	1	1319.1	877.2	0	0	0	0	0	0
4	Motloe ,M (Mbuso)	1	1	425	1	1	425	0	0	0	0	0	0
4	Motloe ,M (Mbuso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Sello ,L (Lesego)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Sello ,L (Lesego)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Tsagane ,O (Omphile)	1	1	425	1	1	425	0	0	0	0	0	0
6	Tsagane ,O (Omphile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Rossouw ,L (Lience)	1	1	425	1	1	425	0	0	0	0	0	0
7	Rossouw ,L (Lience)	1	1421.2	1846.2	1	1402.6	1846.2	0	0	0	0	0	0
8	Van Tonder ,S (Stian)	1	1	425	0	0	0	1	1	425	0	0	0
8	Van Tonder ,S (Stian)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	Venter ,M (Mckenzie)	1	1	425	0	0	0	1	1	425	0	0	0
9	Venter ,M (Mckenzie)	1	1152.2	1577.2	0	0	0	1	1122.5	1577.2	0	0	0
10	Machuisa ,M (Mokgethwa)	1	1	425	0	0	0	1	1	425	0	0	0
10	Machuisa ,M (Mokgethwa)	1	1151.5	1576.5	0	0	0	1	1200	1576.5	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Griffiths, J (Jonathan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms