Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bekker, J (Jacobus)

Chess SA id

1170157327

FIDE id

Date of birth

2017-10-16 (U10)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-10-25

Personal details last changed

1900-01-01

Junior GPX Games

91.7

Junior GPX Points

1377

Item	Main	Standard	Rapid	Blitz
Rating	1531.3	1536.9	1255.4	1200
Raw rating	1531.3	1536.9	1255.4	1200
Weighted rating	1413.4	1411.5	1255.4	1200
Weighted performance	1521.6	1527.1	0	0
Floor	1031.3	1036.9	755.4	700
K-factor	32	32	36	36
Min/Max rating change allowed	103.4	102.6	153.2	165.8
Highest rating	1531.3 2025-11-01	1536.9 2025-11-01	1455.5 2023-09-01	1200 2018-10-01
Highest raw rating	1531.3 2025-11-01	1536.9 2025-11-01	1255.4 2024-02-01	1200 2024-02-01
Highest weighted rating	1413.4 2025-11-01	1411.5 2025-11-01	1255.4 2025-08-01	1200 2018-10-01
Highest weighted performance	1521.6 2025-11-01	1527.1 2025-11-01	1455.5 2023-09-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-82.9	-75.8	0	69.1
New rating	1448.3	1461.1	1255.4	1269.1
Analysis
Rating	1531.3	1536.9	1255.4	1200
Raw rating	1531.3	1536.9	1255.4	1200
Weighted rating	1413.4	1411.5	1255.4
Weighted performance	1521.6	1527.1	0
K-factor	32	32	36	36
Floor	1031.3	1036.9	755.4	700
Max/Min rating change allowed	103.4	102.6	153.2	165.8
Games	18	9	0	9
Score	6.5	3.5	0	3
Expected score	9.09	5.87	0	1.08
Score-Expected	-2.59	-2.37	0	1.92
Temp raw +/-	-82.9	-75.8	0	69.1
Final raw +/-	-82.9	-75.8	0	69.1
New raw rating	1448.3	1461.1	1255.4	1269.1
New weighted rating	1420.6	1420.3	1255.4	1205.5
New weighted performance	1350.9	1435.5	0	0
Temp new rating	1448.3	1461.1	1255.4	1269.1
Temp new rating +/-	-82.9	-75.8	0	69.1
Final new rating +/-	-82.9	-75.8	0	69.1
New rating	1448.3	1461.1	1255.4	1269.1
New K-factor	32	32	36	36
New floor	1031.3	1036.9	755.4	769.1

Item	Main	Standard	Rapid
	0	0	0
	68	68	0
	57	57	0
	15	10	5
	0	0	0
	0	0	0
History	140	135	5

Games since
	Main 125	Standard 125		Rapid 0		Blitz 0
Gender	Male
Age group	U10
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1047		370		130
Male	917		315		109
U10	53		23		11
U10 Male	46		20		9
Standard
	RSA		Province		Region
Overall	962		368		125
Male	838		314		103
U10	47		22		10
U10 Male	40		19		8
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	68	44.5	65.44	131.2	1370.1	1501.4
Standard	68	44.5	65.44	131.2	1370.1	1501.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	140	88	62.86	109.3	1306	1415.3
Standard	135	84	62.22	103.9	1309.9	1413.8
Rapid	5	4	80	255	1201.8	1456.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1531.3	1536.9	1255.4	1200
2025-09-30	1504.3	1508.8	1255.4	1200
2025-09-01	1477.4	1474.8	1255.4	1200
2025-08-01	1485.4	1483.5	1255.4	1200
2025-07-01	1499.1	1500.5	1255.4	1200
2025-06-01	1431.4	1427.8	1255.4	1200
2025-05-01	1423.3	1414.3	1255.4	1200
2025-04-01	1387.7	1383.2	1255.4	1200
2025-03-01	1413.3	1417.5	1255.4	1200
2025-02-01	1377.7	1374.8	1255.4	1200
2025-01-01	1377.7	1374.8	1255.4	1200
2024-12-01	1367.9	1364.4	1255.4	1200
2024-11-01	1383.7	1383.5	1255.4	1200
2024-10-01	1363.6	1359	1255.4	1200
2024-09-01	1394.7	1398.6	1255.4	1200
2024-08-01	1291.6	1297.2	1255.4	1200
2024-07-01	1291.6	1297.2	1255.4	1200
2024-09-01	1274.1	1278.5	1255.4	1200
2024-05-01	1247.8	1235.2	1255.4	1200
2024-04-01	1243.6	1226.6	1255.4	1200
2024-03-01	1217.6	1189.5	1255.4	1200
2024-02-01	1217.6	1189.5	1255.4	1200
2024-01-01	1197.3	1157.1	1255.4	1200
2023-12-01	1197.3	1157.1	1255.4	1200

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Commonwealth Chess Championship 2025 (Blitz)	2025-11-16	2025-11-16	Blitz	Malaysia (MAS)	9	9	3	Yes	Analysis
2	Commonwealth Chess Championship 2025	2025-11-09	2025-11-16	Standard	Malaysia (MAS)	9	9	3.5	Yes	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Commonwealth Chess Championship 2025 (Blitz)	2025-11-16	2025-11-16	Blitz	Malaysia (MAS)	9	9	3	Yes	Analysis
2	Commonwealth Chess Championship 2025	2025-11-09	2025-11-16	Standard	Malaysia (MAS)	9	9	3.5	Yes	Analysis
3	2025 Laerskool Doringkloof Primary Open Chess Tournament (U8+U10)	2025-10-25	2025-10-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Gauteng Top Schools Teams (U11)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	4	4	Yes	Analysis
5	Bojanala's FIDE On The Orion Express 2025 (Little Pawns)	2025-10-04	2025-10-05	Standard	Bojanala Platina (NBR)	7	7	5	Yes	Analysis
6	Laerskool Eligwa Open 20 Sept 2025 (F)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
7	JMC Closed 2025 (U10)	2025-08-09	2025-08-09	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	2025 Wynie Robbertse Chess Tournament (U10)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
9	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
10	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
11	2025 Silver Lakes Chess Club Open Chess Tournament (U10)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
12	South African Junior Closed Chess Championships 2025 (U8 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	5	Yes	Analysis
13	2025 Chris Greyling Open Chess Tournament (U10)	2025-03-15	2025-03-15	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
14	JMC Crawford Ruimsig 2025 (U10)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
15	JMC Kick Off 2025 (U10)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Commonwealth Chess Championship 2025 (Blitz)	2025-11-16	2025-11-16	Blitz	Malaysia (MAS)	9	9	3	Yes	Analysis
2	Commonwealth Chess Championship 2025	2025-11-09	2025-11-16	Standard	Malaysia (MAS)	9	9	3.5	Yes	Analysis
3	2025 Laerskool Doringkloof Primary Open Chess Tournament (U8+U10)	2025-10-25	2025-10-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Gauteng Top Schools Teams (U11)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	4	4	Yes	Analysis
5	Bojanala's FIDE On The Orion Express 2025 (Little Pawns)	2025-10-04	2025-10-05	Standard	Bojanala Platina (NBR)	7	7	5	Yes	Analysis
6	Laerskool Eligwa Open 20 Sept 2025 (F)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
7	JMC Closed 2025 (U10)	2025-08-09	2025-08-09	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	2025 Wynie Robbertse Chess Tournament (U10)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
9	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
10	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
11	2025 Silver Lakes Chess Club Open Chess Tournament (U10)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
12	South African Junior Closed Chess Championships 2025 (U8 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	5	Yes	Analysis
13	2025 Chris Greyling Open Chess Tournament (U10)	2025-03-15	2025-03-15	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
14	JMC Crawford Ruimsig 2025 (U10)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
15	JMC Kick Off 2025 (U10)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
16	Gauteng Inter-Region at UJ 2024 (U8 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
17	Lardies Ope 2024 (U8)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
18	Gauteng Top Schools 2024 (U11 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	4	3.5	Yes	Analysis
19	Centurion Chess Open Tournament 2024 (U8)	2024-09-21	2024-09-21	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
20	2024 Curro Hazeldean High Open Chess Tournament (U8)	2024-09-07	2024-09-07	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
21	2024 Jacaranda Round Robin Open Chess Tournament (U8)	2024-08-17	2024-08-17	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
22	JMC Closed 2024 (U8)	2024-08-09	2024-08-09	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
23	JMC Trinityhouse Little Falls 2024 (U8)	2024-06-02	2024-06-02	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
24	JMC Helpmekaar Kollege Tournament 2024 (U8)	2024-05-04	2024-05-04	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
25	2024 Milos Ristic Open Chess Tournament (U8)	2024-04-27	2024-04-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
26	JMC Unika School Tournament 2024	2024-03-02	2024-03-02	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
27	JMC Kick Off Tournament 2024 (U8)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
28	2023 U8 Open Chess Tournament	2023-09-02	2023-09-02	Rapid	Tshwane (GTP)	5	5	4	Yes	Analysis
29	2023 Alekhine Open Tournament (E+F)	2023-09-09	2023-09-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
30	JNW Open - Trinityhouse Little Falls 2023 (U8)	2023-06-24	2023-06-24	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis

#	Games	Start				End
1	12	Tournament 2025 Gauteng Top Schools Teams				Tournament Bojanala's FIDE On The Orion Express 2025
		date 2025-08-29	rnd 2	type Standard	result 1	date 2025-10-04	rnd 3	type Standard	result 1
		Opponent Oosthuizen, H (Hester Elizabeth)				Opponent Dikane, L (Leano)
2	5	Tournament Gauteng Inter-Region at UJ 2024				Tournament JMC Kick Off 2025
		date 2024-12-08	rnd 5	type Standard	result 1	date 2025-02-02	rnd 4	type Standard	result 1
		Opponent Pretorius, B (Berno)				Opponent Meijer, CM (Carlo Marius)
3	5	Tournament Gauteng Top Schools 2024				Tournament Lardies Ope 2024
		date 2024-10-04	rnd 1	type Standard	result 0.5	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Kolokoto, T (Tsentle)				Opponent Roux, D (Daniel)

#	Games	Start				End
1	5	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 5	type Standard	result 1
		Opponent Botes, M (Michael Prinsloo)				Opponent Masemola, M (Mabotsi)
2	5	Tournament Gauteng Inter-Region at UJ 2024				Tournament JMC Kick Off 2025
		date 2024-12-08	rnd 5	type Standard	result 1	date 2025-02-02	rnd 4	type Standard	result 1
		Opponent Pretorius, B (Berno)				Opponent Meijer, CM (Carlo Marius)
3	5	Tournament Gauteng Top Schools 2024				Tournament Lardies Ope 2024
		date 2024-10-04	rnd 1	type Standard	result 0.5	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Kolokoto, T (Tsentle)				Opponent Roux, D (Daniel)

#	Games	Start				End
1	2	Tournament 2023 U8 Open Chess Tournament				Tournament 2023 U8 Open Chess Tournament
		date 2023-09-02	rnd 4	type Rapid	result 1	date 2023-09-02	rnd 5	type Rapid	result 1
		Opponent Van Rooyen, E (Elann)				Opponent Haffejee, M (Mudassir)
2	2	Tournament 2023 U8 Open Chess Tournament				Tournament 2023 U8 Open Chess Tournament
		date 2023-09-02	rnd 1	type Rapid	result 1	date 2023-09-02	rnd 2	type Rapid	result 1
		Opponent Rossouw, L (Leanne)				Opponent Venter, G (Gabriel)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 5	type Standard	result 1
		Opponent Botes, M (Michael Prinsloo)				Opponent Masemola, M (Mabotsi)
2	4	Tournament JMC Helpmekaar 2025				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-01	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Van Dalen, L (Lenert)				Opponent Swart, E (Eben)
3	4	Tournament Gauteng Top Schools 2024				Tournament Lardies Ope 2024
		date 2024-10-04	rnd 2	type Standard	result 1	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Steyn, M (Marko)				Opponent Roux, D (Daniel)

#	Games	Start				End
1	5	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 5	type Standard	result 1
		Opponent Botes, M (Michael Prinsloo)				Opponent Masemola, M (Mabotsi)
2	4	Tournament JMC Helpmekaar 2025				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-01	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Van Dalen, L (Lenert)				Opponent Swart, E (Eben)
3	4	Tournament Gauteng Top Schools 2024				Tournament Lardies Ope 2024
		date 2024-10-04	rnd 2	type Standard	result 1	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Steyn, M (Marko)				Opponent Roux, D (Daniel)

#	Games	Start				End
1	2	Tournament 2023 U8 Open Chess Tournament				Tournament 2023 U8 Open Chess Tournament
		date 2023-09-02	rnd 4	type Rapid	result 1	date 2023-09-02	rnd 5	type Rapid	result 1
		Opponent Van Rooyen, E (Elann)				Opponent Haffejee, M (Mudassir)
2	2	Tournament 2023 U8 Open Chess Tournament				Tournament 2023 U8 Open Chess Tournament
		date 2023-09-02	rnd 1	type Rapid	result 1	date 2023-09-02	rnd 2	type Rapid	result 1
		Opponent Rossouw, L (Leanne)				Opponent Venter, G (Gabriel)

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	Koorts ,L (Lukas)	8	0.5	-371.9	8	0.5	-371.9	0	0	0	0	0	0
1	Koorts ,L (Lukas)	8	1550.6	1178.8	8	1557.3	1178.8	0	0	0	0	0	0
2	Sahoo ,S (Shaurya)	5	1.5	-170	5	1.5	-170	0	0	0	0	0	0
2	Sahoo ,S (Shaurya)	5	1402.7	1232.7	5	1403.3	1232.7	0	0	0	0	0	0
3	Stelloh ,A (Alexander)	5	1	-255	5	1	-255	0	0	0	0	0	0
3	Stelloh ,A (Alexander)	5	1335.1	1080.1	5	1332.3	1080.1	0	0	0	0	0	0
4	Simao ,R (Raul)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Simao ,R (Raul)	3	1245.7	1104.1	3	1248.7	1104.1	0	0	0	0	0	0
5	Conradie ,M (Marcus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
5	Conradie ,M (Marcus)	3	1277.3	1419	3	1276.5	1419	0	0	0	0	0	0
6	Joubert ,Z (Zani)	3	3	425	3	3	425	0	0	0	0	0	0
6	Joubert ,Z (Zani)	3	1158.7	1583.7	3	1157	1583.7	0	0	0	0	0	0
7	Van Eeden ,C (Cilliers)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Van Eeden ,C (Cilliers)	2	1267.1	1479.6	2	1269.6	1479.6	0	0	0	0	0	0
8	Frishter ,S (Sofia)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Frishter ,S (Sofia)	2	1315.7	890.7	2	1337.1	890.7	0	0	0	0	0	0
9	Steyn ,K (Kian)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Steyn ,K (Kian)	2	1633.1	1208.1	2	1621.9	1208.1	0	0	0	0	0	0
10	Fischer ,E (Ernst)	2	2	425	2	2	425	0	0	0	0	0	0
10	Fischer ,E (Ernst)	2	1264.7	1689.7	2	1266.1	1689.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Bekker, J (Jacobus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms