Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oberholzer, J (Justin)

Chess SA id

1160151390

FIDE id

Date of birth

2016-10-11 (U10)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

44.9

Junior GPX Points

1296

Item	Main	Standard	Rapid	Blitz
Rating	1541	1522	1448.3	1200
Raw rating	1541	1518.1	1448.3	1200
Weighted rating	1385.4	1322.9	1362	1200
Weighted performance	1512.7	1522	1422.2	0
Floor	1078.6	1022.6	948.3	700
K-factor	32	32	32	36
Min/Max rating change allowed	102	105.4	116.4	165.8
Highest rating	1578.6 2025-06-01	1522.6 2025-06-01	1456.5 2023-03-01	1200 2018-10-01
Highest raw rating	1578.6 2025-06-01	1522.6 2025-06-01	1448.3 2025-09-01	1200 2024-03-01
Highest weighted rating	1578.6 2023-07-01	1522.6 2018-10-01	1348.3 2025-09-01	1200 2018-10-01
Highest weighted performance	1578.6 2025-06-01	1522.6 2024-09-01	1456.5 2023-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	-0.5	0	0
New rating	1541	1521.5	1448.3	1200
Analysis
Rating	1541	1522	1448.3	1200
Raw rating	1541	1518.1	1448.3	1200
Weighted rating	1385.4	1322.9	1362
Weighted performance	1512.7	1522	1422.2
K-factor	32	32	32	36
Floor	1078.6	1022.6	948.3	700
Max/Min rating change allowed	102	105.4	116.4	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	1541	1518.1	1448.3	1200
New weighted rating	1405.6	1345.3	1374.5	1200
New weighted performance	1512.2	1521.5	1421.7	0
Temp new rating	1541	1521.5	1448.3	1200
Temp new rating +/-	0	-0.5	0	0
Final new rating +/-	0	-0.5	0	0
New rating	1541	1521.5	1448.3	1200
New K-factor	32	32	32	36
New floor	1078.6	1022.6	948.3	700

Item	Main	Standard	Rapid
	0	0	0
	59	32	27
	47	21	26
	26	11	15
	0	0	0
	0	0	0
History	132	64	68

Games since
	Main 111	Standard 53		Rapid 58		Blitz 0
Gender	Male
Age group	U10
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	964		282		19
Male	848		239		16
U10	47		9		1
U10 Male	41		8		1
Standard
	RSA		Province		Region
Overall	1015		273		17
Male	879		225		14
U10	52		13		1
U10 Male	45		11		1
Rapid
	RSA		Province		Region
Overall	342		167		36
Male	310		150		28
U10	10		5		1
U10 Male	10		5		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	59	46	77.97	237.7	1312.7	1550.4
Standard	32	26	81.25	265.6	1315.7	1581.4
Rapid	27	20	74.07	204.6	1309	1513.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	132	81.5	61.74	99.8	1263.9	1363.7
Standard	64	39	60.94	93	1278.8	1371.7
Rapid	68	42.5	62.5	106.2	1249.9	1356.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1541	1518.1	1448.3	1200
2025-09-01	1543.1	1510.4	1448.3	1200
2025-08-01	1553.3	1522.6	1409.8	1200
2025-07-01	1578.6	1522.6	1432.2	1200
2025-06-01	1578.6	1522.6	1432.2	1200
2025-05-01	1462.9	1330.4	1432.2	1200
2025-04-01	1462.9	1330.4	1432.2	1200
2025-03-01	1370.8	1232.4	1432.2	1200
2025-02-01	1301.6	1232.4	1364.9	1200
2025-01-01	1301.6	1232.4	1364.9	1200
2024-12-01	1301.6	1232.4	1364.9	1200
2024-11-01	1280.2	1232.4	1307.6	1200
2024-10-01	1280.2	1232.4	1307.6	1200
2024-09-01	1241.7	1153.6	1307.6	1200
2024-08-01	1181.5	1132.4	1219	1200
2024-07-01	1181.5	1132.4	1219	1200
2024-06-01	1181.5	1132.4	1219	1200
2024-08-01	1123.5	1073.2	1185.2	1200
2024-04-01	1123.5	1073.2	1185.2	1200
2024-03-01	1098.2	1073.2	1149.9	1200
2024-02-01	1058.9	1073.2	1089.1	1200
2024-01-01	1058.9	1073.2	1089.1	1200
2023-12-01	1058.9	1073.2	1089.1	1200
2023-11-01	1058.9	1073.2	1089.1	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	Western Cape Schools - Top Schools 2025 (U9)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	5	Yes	Analysis
2	Rooibos Open 2025 (Intermediate)	2025-08-30	2025-08-30	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
3	Pedro Booyse Top Schools 2025 (U9)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	6	6	Yes	Analysis
4	Western Cape Women�s Championship 2025 (U10)	2025-08-09	2025-08-09	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
5	Western Cape Women�s Championship 2025 (Sunday Rapid)	2025-08-10	2025-08-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	Lower West Coast Top Schools 2025 (U9)	2025-06-12	2025-06-12	Rapid	West Coast (WCU)	6	4	4	Yes	Analysis
7	4th Curro Durbanville Rapid Open 2025 (Advanced)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	2	Yes	Analysis
8	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
9	West Coast And Mykonos Open 2025 (U10)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	4	Yes	Analysis
10	West Coast Schools Chess Prestige 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	6	Yes	Analysis
11	Lower West Coast Prestige 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U9)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	5	Yes	Analysis
2	Rooibos Open 2025 (Intermediate)	2025-08-30	2025-08-30	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
3	Pedro Booyse Top Schools 2025 (U9)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	6	6	Yes	Analysis
4	Western Cape Women�s Championship 2025 (U10)	2025-08-09	2025-08-09	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
5	Western Cape Women�s Championship 2025 (Sunday Rapid)	2025-08-10	2025-08-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	Lower West Coast Top Schools 2025 (U9)	2025-06-12	2025-06-12	Rapid	West Coast (WCU)	6	4	4	Yes	Analysis
7	4th Curro Durbanville Rapid Open 2025 (Advanced)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	2	Yes	Analysis
8	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
9	West Coast And Mykonos Open 2025 (U10)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	4	Yes	Analysis
10	West Coast Schools Chess Prestige 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	6	Yes	Analysis
11	Lower West Coast Prestige 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	5	Yes	Analysis
12	West Coast Grand Challange League 2024 (PS Champions)	2024-10-26	2024-10-26	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
13	Western Cape Top Schools Championship 2024 (U11 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	4	Yes	Analysis
14	Western Cape Women�s Championship 2024 (U10)	2024-08-09	2024-08-09	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
15	Pedro Booyse Top Schools Championships 2024 (U7+U9)	2024-07-20	2024-07-20	Rapid	West Coast (WCU)	7	6	5	Yes	Analysis
16	West Coast & Mykonos Open 2024 (U10)	2024-05-18	2024-05-18	Standard	West Coast (WCU)	5	4	1	Yes	Analysis
17	Lower West Top Schools 2024 (U9+U11)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
18	Western Cape PS Individuals Championship 2024 (U9 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
19	West Coast Schools Chess Prestige Championships 2024 (U9 Boys)	2024-03-09	2024-03-09	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
20	Lower West Coast Schools Chess Prestige 2024 (U9 Boys)	2024-02-17	2024-02-17	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
21	West Coast Primary Schools Grand Challenge League 2023 (Primary School)	2023-10-21	2023-10-21	Rapid	West Coast (WCU)	5	5	0	Yes	Analysis
22	Western Cape Top Schools 2023 (U7 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	5	0	Yes	Analysis
23	Pedro Booyse Top Schools 2023 (U7+U9)	2023-07-29	2023-07-29	Rapid	West Coast (WCU)	5	5	0	Yes	Analysis
24	Western Cape PS Individuals 2023 (U7 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
25	Lower West Coast Primary Schools Prestige Championships 2023 (U7 Boys+Girls)	2023-03-04	2023-03-04	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis

#	Games	Start				End
1	15	Tournament West Coast Grand Challange League 2024				Tournament West Coast And Mykonos Open 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 2	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Louw, T (Thomas)
2	8	Tournament Rooibos Open 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-30	rnd 3	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Deminis, W (Wilkeanan)				Opponent Edons, E (Elijah)
3	7	Tournament Western Cape Women�s Championship 2025				Tournament Pedro Booyse Top Schools 2025
		date 2025-08-10	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Priyanshi, G (Gupta)				Opponent Avontuur, E (Ezrah)

#	Games	Start				End
1	12	Tournament Western Cape Top Schools Championship 2024				Tournament West Coast And Mykonos Open 2025
		date 2024-08-30	rnd 3	type Standard	result 1	date 2025-05-03	rnd 2	type Standard	result 1
		Opponent Ferguson, J (Julian)				Opponent Louw, T (Thomas)
2	8	Tournament Rooibos Open 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-30	rnd 3	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Deminis, W (Wilkeanan)				Opponent Edons, E (Elijah)
3	6	Tournament West Coast And Mykonos Open 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Bessesen, S (Sindre)				Opponent Lin, J (Junming)

#	Games	Start				End
1	11	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Top Schools 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-06-12	rnd 5	type Rapid	result 1
		Opponent Johnson, M (Melanique)				Opponent Heynse, D (Deraygon)
2	7	Tournament Western Cape Women�s Championship 2025				Tournament Pedro Booyse Top Schools 2025
		date 2025-08-10	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Priyanshi, G (Gupta)				Opponent Avontuur, E (Ezrah)
3	7	Tournament Lower West Top Schools 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-07-20	rnd 6	type Rapid	result 1
		Opponent Kersov, A (Althea)				Opponent Don, E (El Deano)

No games found.

#	Games	Start				End

#	Games	Start				End
1	15	Tournament West Coast Grand Challange League 2024				Tournament West Coast And Mykonos Open 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 2	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Louw, T (Thomas)
2	8	Tournament Rooibos Open 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-30	rnd 3	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Deminis, W (Wilkeanan)				Opponent Edons, E (Elijah)
3	7	Tournament Western Cape Women�s Championship 2025				Tournament Pedro Booyse Top Schools 2025
		date 2025-08-10	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Priyanshi, G (Gupta)				Opponent Avontuur, E (Ezrah)

#	Games	Start				End
1	12	Tournament Western Cape Top Schools Championship 2024				Tournament West Coast And Mykonos Open 2025
		date 2024-08-30	rnd 3	type Standard	result 1	date 2025-05-03	rnd 2	type Standard	result 1
		Opponent Ferguson, J (Julian)				Opponent Louw, T (Thomas)
2	8	Tournament Rooibos Open 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-30	rnd 3	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Deminis, W (Wilkeanan)				Opponent Edons, E (Elijah)
3	6	Tournament West Coast And Mykonos Open 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Bessesen, S (Sindre)				Opponent Lin, J (Junming)

#	Games	Start				End
1	11	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Top Schools 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-06-12	rnd 5	type Rapid	result 1
		Opponent Johnson, M (Melanique)				Opponent Heynse, D (Deraygon)
2	7	Tournament Western Cape Women�s Championship 2025				Tournament Pedro Booyse Top Schools 2025
		date 2025-08-10	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Priyanshi, G (Gupta)				Opponent Avontuur, E (Ezrah)
3	7	Tournament Lower West Top Schools 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-07-20	rnd 6	type Rapid	result 1
		Opponent Kersov, A (Althea)				Opponent Don, E (El Deano)

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	Erasmus ,M (Migal)	5	5	425	2	2	425	3	3	425	0	0	0
1	Erasmus ,M (Migal)	5	1217.5	1642.5	2	1197.2	1642.5	3	1259.6	1642.5	0	0	0
2	Heynse ,D (Deraygon)	4	4	425	0	0	0	4	4	425	0	0	0
2	Heynse ,D (Deraygon)	4	1124.9	1549.9	0	0	0	4	1098.6	1549.9	0	0	0
3	Niemand ,J (Jano)	3	3	425	2	2	425	1	1	425	0	0	0
3	Niemand ,J (Jano)	3	1245.2	1670.2	2	1199.1	1670.2	1	1246.9	1670.2	0	0	0
4	Da Camara ,I (Izabella)	3	1	-141.7	1	0	-425	2	1	0	0	0	0
4	Da Camara ,I (Izabella)	3	1190	1048.3	1	1211.5	765	2	1178.9	1190	0	0	0
5	Revmatas ,N (Nikolai)	3	3	425	0	0	0	3	3	425	0	0	0
5	Revmatas ,N (Nikolai)	3	1154.7	1579.7	0	0	0	3	1160.4	1579.7	0	0	0
6	Ramonyaluoe ,M (Madalitso)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Ramonyaluoe ,M (Madalitso)	2	1590.7	1165.7	2	1578.8	1165.7	0	0	0	0	0	0
7	Louw ,T (Thomas)	2	2	425	2	2	425	0	0	0	0	0	0
7	Louw ,T (Thomas)	2	1239.3	1664.3	2	1243	1664.3	0	0	0	0	0	0
8	Rogova ,E (Emilia)	2	1	0	2	1	0	0	0	0	0	0	0
8	Rogova ,E (Emilia)	2	1255.3	1255.3	2	1230.4	1255.3	0	0	0	0	0	0
9	Martin ,M (Mikaeel)	2	2	425	1	1	425	1	1	425	0	0	0
9	Martin ,M (Mikaeel)	2	1157.5	1582.5	1	1200	1582.5	1	1143.5	1582.5	0	0	0
10	Van Wyk ,F (Faith)	2	1	0	1	0	-425	1	1	425	0	0	0
10	Van Wyk ,F (Faith)	2	1494	1494	1	1426.6	1069	1	1568.3	1919	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Oberholzer, J (Justin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms