Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, J (Joel)

Chess SA id

1150146349

FIDE id

Date of birth

2015-02-06 (U12)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

79.8

Junior GPX Points

1362.4

Item	Main	Standard	Rapid	Blitz
Rating	1470	1471.5	1284.2	1102.4
Raw rating	1457	1469.2	1284.2	1102.4
Weighted rating	1424.8	1425	1264.5	1102.4
Weighted performance	1470	1471.5	0	0
Floor	964.8	977.2	784.2	700
K-factor	32	32	36	36
Min/Max rating change allowed	115	113	147.1	190.6
Highest rating	1486.8 2025-09-30	1488.3 2025-09-30	1437.1 2024-11-01	1200 2018-10-01
Highest raw rating	1464.8 2025-08-01	1477.2 2025-08-01	1284.2 2024-12-01	1200 2019-12-01
Highest weighted rating	1420.2 2025-09-30	1419.4 2025-09-30	1253.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1486.8 2025-09-30	1488.3 2025-09-30	1437.1 2024-11-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-8.9	-2.4	0	0
New rating	1461.1	1469.2	1284.2	1102.4
Analysis
Rating	1470	1471.5	1284.2	1102.4
Raw rating	1457	1469.2	1284.2	1102.4
Weighted rating	1424.8	1425	1264.5
Weighted performance	1470	1471.5	0
K-factor	32	32	36	36
Floor	964.8	977.2	784.2	700
Max/Min rating change allowed	115	113	147.1	190.6
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	1457	1469.2	1284.2	1102.4
New weighted rating	1429	1430.1	1267.6	1102.4
New weighted performance	1461.1	1462.6	0	0
Temp new rating	1461.1	1469.2	1284.2	1102.4
Temp new rating +/-	-8.9	-2.4	0	0
Final new rating +/-	-8.9	-2.4	0	0
New rating	1461.1	1469.2	1284.2	1102.4
New K-factor	32	32	36	36
New floor	964.8	977.2	784.2	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	63	63	0	0
	75	64	11	0
	34	34	0	0
	9	0	0	9
	0	0	0	0
History	181	161	11	9

Games since
	Main 138	Standard 127		Rapid 11		Blitz 0
Gender	Male
Age group	U12
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1509		179		62
Male	1272		156		56
U12	173		20		8
U12 Male	124		16		8
Standard
	RSA		Province		Region
Overall	1422		171		56
Male	1195		149		50
U12	159		18		8
U12 Male	114		15		8
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	63	35.5	56.35	54	1373.8	1427.8
Standard	63	35.5	56.35	54	1373.8	1427.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	181	106	58.56	72.8	1302.9	1375.7
Standard	161	95	59.01	76.6	1313.2	1389.7
Rapid	11	8	72.73	193.2	1243.6	1436.8
Blitz	9	3	33.33	-141.7	1191.4	1049.7

Date	Main	Standard	Rapid	Blitz
2025-11-01	1457	1469.2	1284.2	1102.4
2025-09-30	1457	1469.2	1284.2	1102.4
2025-09-01	1464.8	1477.2	1284.2	1102.4
2025-08-01	1464.8	1477.2	1284.2	1102.4
2025-07-01	1407	1407.7	1284.2	1102.4
2025-06-01	1404.2	1404.2	1284.2	1102.4
2025-05-01	1396.4	1392.6	1284.2	1102.4
2025-04-01	1392.4	1385.5	1284.2	1102.4
2025-03-01	1427	1411.5	1284.2	1102.4
2025-02-01	1459.8	1449.1	1284.2	1102.4
2025-01-01	1455.6	1439.6	1284.2	1102.4
2024-12-01	1417.8	1405	1284.2	1102.4
2024-11-01	1419.5	1405	1253.6	1102.4
2024-10-01	1416.9	1412	1200	1102.4
2024-09-01	1420.2	1417.8	1200	1102.4
2024-08-01	1402.7	1402.1	1200	1102.4
2024-07-01	1397.4	1397	1200	1102.4
2024-09-01	1397.4	1397	1200	1102.4
2024-05-01	1413.3	1417.2	1200	1102.4
2024-04-01	1327.8	1334.4	1200	1102.4
2024-03-01	1341.2	1354.2	1200	1102.4
2024-02-01	1322.1	1333.3	1200	1102.4
2024-01-01	1322.1	1333.3	1200	1102.4
2023-12-01	1322.1	1333.3	1200	1102.4

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	EC Closed 2025 (U12 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
2	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U12 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	5.5	Yes	Analysis
3	Eastern Cape Inter-Regional Team Chess Championship 2025 (U12)	2025-07-10	2025-07-11	Standard	Amathole (EAL)	5	3	1	Yes	Analysis
4	NMBCU Closed 2025 (U12)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
5	NMBCU Open 2025 (C)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
6	NMBCU Trial 4 2025 (U12)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
7	NMB 3rd Trials 2025 (U12)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U10 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis
9	NMB 2nd Trials 2025 (U12)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	5	2.5	Yes	Analysis
10	Pearson High Chess Festival 2025 (C)	2025-02-21	2025-02-22	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
11	NMBCH Trial 1 2025 (U12)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
12	NMBCU vs BCC Derby Chess Invitational 2025 (U10)	2025-01-10	2025-01-11	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	EC Closed 2025 (U12 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
2	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U12 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	5.5	Yes	Analysis
3	Eastern Cape Inter-Regional Team Chess Championship 2025 (U12)	2025-07-10	2025-07-11	Standard	Amathole (EAL)	5	3	1	Yes	Analysis
4	NMBCU Closed 2025 (U12)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
5	NMBCU Open 2025 (C)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
6	NMBCU Trial 4 2025 (U12)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
7	NMB 3rd Trials 2025 (U12)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U10 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis
9	NMB 2nd Trials 2025 (U12)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	5	2.5	Yes	Analysis
10	Pearson High Chess Festival 2025 (C)	2025-02-21	2025-02-22	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
11	NMBCH Trial 1 2025 (U12)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
12	NMBCU vs BCC Derby Chess Invitational 2025 (U10)	2025-01-10	2025-01-11	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
13	Mzansi Interprovincial Youth Chess Championships 2024 (U10 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	5	Yes	Analysis
14	Grey Junior School Chess Team Championship 2024 (Junior)	2024-11-02	2024-11-02	Rapid	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
15	NMBCU Top Schools Final 2024 (Primary School)	2024-10-19	2024-10-29	Standard	Nelson Mandela Bay (ENM)	3	3	2	Yes	Analysis
16	NMBCU Top Schools 2024 (Senior Primary)	2024-10-12	2024-10-12	Rapid	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
17	NMBCU Closed 2024 (U10)	2024-09-20	2024-09-21	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
18	NMBCU Trial 5 2024 (U8+U10)	2024-08-16	2024-08-17	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
19	NMBCU Trials 4 2024 (U10)	2024-07-12	2024-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
20	NMBCU Trial 3 2024 (U10)	2024-05-10	2024-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
21	NMBCU Trials 2 2024 (U10)	2024-04-12	2024-04-13	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
22	Sams Easter Invitational 1 2024	2024-03-27	2024-03-27	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
23	Chess Lovers Invitational March 2024	2024-03-20	2024-03-21	Standard	Nelson Mandela Bay (ENM)	7	7	2	Yes	Analysis
24	NMBCU Trials 1 2024 (U10)	2024-02-16	2024-02-17	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
25	Pearson Open Chess Tournament 2024 (C)	2024-02-23	2024-02-24	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
26	Eastern Cape Provincial Individual Championship 2023 (U10 Boys)	2023-10-05	2023-10-05	Standard	Nelson Mandela Bay (ENM)	7	7	4	Yes	Analysis
27	Eastern Cape Chess Team Championship 2023 (U10)	2023-10-07	2023-10-08	Standard	Sarah Baartman (ESB)	5	3	3	Yes	Analysis
28	NMBCU Closed 2023 (U10)	2023-08-11	2023-08-12	Standard	Nelson Mandela Bay (ENM)	6	6	1.5	Yes	Analysis
29	NMBCU Trial 4 2023 (U10)	2023-07-28	2023-07-29	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
30	EP Trials 3 2023 (U10)	2023-05-05	2023-05-06	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
31	NMB 1st Trials 2023 (U8+U10)	2023-02-17	2023-02-18	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
32	PECC Blitz Closed 2022	2022-08-11	2022-08-18	Blitz	Nelson Mandela Bay (ENM)	9	9	3	Yes	Analysis

#	Games	Start				End
1	8	Tournament Eastern Cape Inter-Regional Team Chess Championship 2025				Tournament EC Closed 2025
		date 2025-07-11	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Van Vliet, J (Janu)				Opponent Dikane, A (Akhelethu)
2	7	Tournament NMBCU Trials 2 2024				Tournament NMBCU Trial 3 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-05-10	rnd 1	type Standard	result 1
		Opponent Bezuidenhout, J (Jarrod)				Opponent Mitchell, N (Nicholas)
3	7	Tournament Eastern Cape Chess Team Championship 2023				Tournament NMBCU Trials 1 2024
		date 2023-10-07	rnd 3	type Standard	result 1	date 2024-02-17	rnd 4	type Standard	result 1
		Opponent Mgushelo, I (Iminathi)				Opponent King, J (Jaymie)

#	Games	Start				End
1	8	Tournament Eastern Cape Inter-Regional Team Chess Championship 2025				Tournament EC Closed 2025
		date 2025-07-11	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Van Vliet, J (Janu)				Opponent Dikane, A (Akhelethu)
2	7	Tournament NMBCU Trials 2 2024				Tournament NMBCU Trial 3 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-05-10	rnd 1	type Standard	result 1
		Opponent Bezuidenhout, J (Jarrod)				Opponent Mitchell, N (Nicholas)
3	7	Tournament Eastern Cape Chess Team Championship 2023				Tournament NMBCU Trials 1 2024
		date 2023-10-07	rnd 3	type Standard	result 1	date 2024-02-17	rnd 4	type Standard	result 1
		Opponent Mgushelo, I (Iminathi)				Opponent King, J (Jaymie)

#	Games	Start				End
1	3	Tournament NMBCU Top Schools 2024				Tournament NMBCU Top Schools 2024
		date 2024-10-12	rnd 1	type Rapid	result 1	date 2024-10-12	rnd 3	type Rapid	result 1
		Opponent Raqow, E (Endinale)				Opponent Henn, R (Robert)
2	2	Tournament Grey Junior School Chess Team Championship 2024				Tournament Grey Junior School Chess Team Championship 2024
		date 2024-11-02	rnd 5	type Rapid	result 1	date 2024-11-02	rnd 6	type Rapid	result 1
		Opponent Fourie, A (Andre)				Opponent Van Dyk, B (Ben)
3	2	Tournament Grey Junior School Chess Team Championship 2024				Tournament Grey Junior School Chess Team Championship 2024
		date 2024-11-02	rnd 2	type Rapid	result 1	date 2024-11-02	rnd 3	type Rapid	result 1
		Opponent Fourie, A (Andre)				Opponent Van Dyk, B (Ben)

#	Games	Start				End
1	2	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-18	rnd 8	type Blitz	result 1	date 2022-08-18	rnd 9	type Blitz	result 1
		Opponent Billett, L (Lauren)				Opponent Gamba, O (Owen)
2	1	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-11	rnd 4	type Blitz	result 1	date 2022-08-11	rnd 4	type Blitz	result 1
		Opponent Jacobs, H (Hilton)				Opponent Jacobs, H (Hilton)

#	Games	Start				End
1	7	Tournament NMBCU Trials 2 2024				Tournament NMBCU Trial 3 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-05-10	rnd 1	type Standard	result 1
		Opponent Bezuidenhout, J (Jarrod)				Opponent Mitchell, N (Nicholas)
2	7	Tournament Eastern Cape Chess Team Championship 2023				Tournament NMBCU Trials 1 2024
		date 2023-10-07	rnd 3	type Standard	result 1	date 2024-02-17	rnd 4	type Standard	result 1
		Opponent Mgushelo, I (Iminathi)				Opponent King, J (Jaymie)
3	5	Tournament NMBCU Trials 4 2024				Tournament NMBCU Trial 5 2024
		date 2024-07-13	rnd 5	type Standard	result 1	date 2024-08-17	rnd 3	type Standard	result 1
		Opponent Furniss, T (Tyler)				Opponent King, J (Jaymie)

#	Games	Start				End
1	7	Tournament NMBCU Trials 2 2024				Tournament NMBCU Trial 3 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-05-10	rnd 1	type Standard	result 1
		Opponent Bezuidenhout, J (Jarrod)				Opponent Mitchell, N (Nicholas)
2	7	Tournament Eastern Cape Chess Team Championship 2023				Tournament NMBCU Trials 1 2024
		date 2023-10-07	rnd 3	type Standard	result 1	date 2024-02-17	rnd 4	type Standard	result 1
		Opponent Mgushelo, I (Iminathi)				Opponent King, J (Jaymie)
3	5	Tournament NMBCU Trials 4 2024				Tournament NMBCU Trial 5 2024
		date 2024-07-13	rnd 5	type Standard	result 1	date 2024-08-17	rnd 3	type Standard	result 1
		Opponent Furniss, T (Tyler)				Opponent King, J (Jaymie)

#	Games	Start				End
1	3	Tournament NMBCU Top Schools 2024				Tournament NMBCU Top Schools 2024
		date 2024-10-12	rnd 1	type Rapid	result 1	date 2024-10-12	rnd 3	type Rapid	result 1
		Opponent Raqow, E (Endinale)				Opponent Henn, R (Robert)
2	2	Tournament Grey Junior School Chess Team Championship 2024				Tournament Grey Junior School Chess Team Championship 2024
		date 2024-11-02	rnd 5	type Rapid	result 1	date 2024-11-02	rnd 6	type Rapid	result 1
		Opponent Fourie, A (Andre)				Opponent Van Dyk, B (Ben)
3	2	Tournament Grey Junior School Chess Team Championship 2024				Tournament Grey Junior School Chess Team Championship 2024
		date 2024-11-02	rnd 2	type Rapid	result 1	date 2024-11-02	rnd 3	type Rapid	result 1
		Opponent Fourie, A (Andre)				Opponent Van Dyk, B (Ben)

#	Games	Start				End
1	2	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-18	rnd 8	type Blitz	result 1	date 2022-08-18	rnd 9	type Blitz	result 1
		Opponent Billett, L (Lauren)				Opponent Gamba, O (Owen)
2	1	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-11	rnd 4	type Blitz	result 1	date 2022-08-11	rnd 4	type Blitz	result 1
		Opponent Jacobs, H (Hilton)				Opponent Jacobs, H (Hilton)

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	King ,J (Jaymie)	9	6	141.7	7	6	303.6	2	0	-425	0	0	0
1	King ,J (Jaymie)	9	1303.1	1444.8	7	1270.4	1606.7	2	1297.9	878.1	0	0	0
2	Stander ,CL (Cael Lelethu)	7	0	-425	7	0	-425	0	0	0	0	0	0
2	Stander ,CL (Cael Lelethu)	7	1479.8	1054.8	7	1454.9	1054.8	0	0	0	0	0	0
3	Boggenpoel ,L (Levi)	6	1.5	-212.5	6	1.5	-212.5	0	0	0	0	0	0
3	Boggenpoel ,L (Levi)	6	1317.2	1104.8	6	1349.2	1104.8	0	0	0	0	0	0
4	Hugo ,K (Kian)	6	2.5	-70.8	6	2.5	-70.8	0	0	0	0	0	0
4	Hugo ,K (Kian)	6	1509.5	1438.6	6	1511	1438.6	0	0	0	0	0	0
5	Koutsouvelis ,M (Matthew)	5	0.5	-340	5	0.5	-340	0	0	0	0	0	0
5	Koutsouvelis ,M (Matthew)	5	1468.8	1128.8	5	1464.3	1128.8	0	0	0	0	0	0
6	Furniss ,T (Tyler)	5	3	85	5	3	85	0	0	0	0	0	0
6	Furniss ,T (Tyler)	5	1447.2	1532.2	5	1457.8	1532.2	0	0	0	0	0	0
7	Verwey ,M (Malan)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
7	Verwey ,M (Malan)	5	1327.2	1327.2	5	1350	1327.2	0	0	0	0	0	0
8	Schreinders ,M (Mia)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
8	Schreinders ,M (Mia)	5	1258	1258	5	1262.8	1258	0	0	0	0	0	0
9	Manton ,C (Charlie)	5	1	-255	5	1	-255	0	0	0	0	0	0
9	Manton ,C (Charlie)	5	1389.6	1134.6	5	1402.6	1134.6	0	0	0	0	0	0
10	Van Dyk ,B (Ben)	5	3	85	3	1	-141.7	2	2	425	0	0	0
10	Van Dyk ,B (Ben)	5	1223.6	1308.6	3	1243.2	1082	2	1200	1648.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Jacobs, J (Joel)

Ratings

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Historical performance

Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms