Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oerson, R (Roy)

Chess SA id

179028796

FIDE id

Date of birth

1979-07-27 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1681	1679.2	1676	1676
Raw rating	1681	1679.2	1676	1676
Weighted rating	1656.6	1654.2	1675.7	1675.7
Weighted performance	0	0	0	0
Floor	1181	1179.2	1176	1176
K-factor	28	28	28	28
Min/Max rating change allowed	83.6	83.8	84.2	84.2
Highest rating	1709.1 2022-10-01	1694.1 2022-10-01	1676 2024-02-01	1676 2024-02-01
Highest raw rating	1681 2025-11-01	1679.2 2025-11-01	1676 2024-02-01	1676 2024-02-01
Highest weighted rating	1656.6 2025-11-01	1654.2 2025-11-01	1672.8 2025-08-01	1672.8 2025-08-01
Highest weighted performance	1709.1 2022-10-01	1694.1 2022-10-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1681	1679.2	1676	1676
Analysis
Rating	1681	1679.2	1676	1676
Raw rating	1681	1679.2	1676	1676
Weighted rating	1656.6	1654.2	1675.7
Weighted performance	0	0	0
K-factor	28	28	28	28
Floor	1181	1179.2	1176	1176
Max/Min rating change allowed	83.6	83.8	84.2	84.2
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	1681	1679.2	1676	1676
New weighted rating	1658.4	1656	1676	1676
New weighted performance	0	0	0	0
Temp new rating	1681	1679.2	1676	1676
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1681	1679.2	1676	1676
New K-factor	28	28	28	28
New floor	1181	1179.2	1176	1176

Item	Main	Standard
	0	0
	6	6
	9	9
	4	4
	7	7
	0	0
History	107	107

Games since
	Main 15	Standard 15		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	6	2	33.33	-141.7	1997.8	1856.1
Standard	6	2	33.33	-141.7	1997.8	1856.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	26	16.5	63.46	114.4	1576.7	1691.1
Standard	26	16.5	63.46	114.4	1576.7	1691.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1681	1679.2	1676	1676
2025-09-30	1654.2	1651.8	1676	1676
2025-09-01	1654.2	1651.8	1676	1676
2025-08-01	1654.2	1651.8	1676	1676
2025-07-01	1653.8	1651.4	1676	1676
2025-06-01	1653.3	1650.9	1676	1676
2025-05-01	1652.6	1650.4	1676	1676
2025-04-01	1651.9	1649.7	1676	1676
2025-03-01	1651	1648.8	1676	1676
2025-02-01	1649.5	1647.2	1676	1676
2025-01-01	1641.2	1636.6	1676	1676
2024-12-01	1641.2	1636.6	1676	1676
2024-11-01	1641.2	1636.6	1676	1676
2024-10-01	1641.2	1636.6	1676	1676
2024-09-01	1672.3	1671.3	1676	1676
2024-08-01	1672.3	1671.3	1676	1676
2024-07-01	1672.3	1671.3	1676	1676
2024-09-01	1672.3	1671.3	1676	1676
2024-05-01	1672.3	1671.3	1676	1676
2024-04-01	1672.3	1671.3	1676	1676
2024-03-01	1672.3	1671.3	1676	1676
2024-02-01	1672.3	1671.3	1676	1676
2024-01-01	1672.3	1671.3	1676	1676
2023-12-01	1613.8	1612.3	1579	1579

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	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	6	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	6	2	Yes	Analysis
2	CT League 2024 (B)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	9	5	Yes	Analysis
3	WP Club League 2023 (C)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	4	3.5	Yes	Analysis
4	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	7	6	Yes	Analysis

#	Games	Start				End
1	14	Tournament 2022 Western Province Club League				Tournament CT League 2024
		date 2022-08-27	rnd 1	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Amardien, A (Rafiek)				Opponent Ferreira, C (Craig)
2	3	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-24	rnd 7	type Standard	result 0.5	date 2024-08-31	rnd 9	type Standard	result 1
		Opponent Willenberg, RC (Roland)				Opponent Palmer, ZE (Zante)
3	1	Tournament Cape Town Chess Federation Club League 2025				Tournament Cape Town Chess Federation Club League 2025
		date 2025-09-27	rnd 11	type Standard	result 1	date 2025-09-27	rnd 11	type Standard	result 1
		Opponent Knipe, JMD (Johannes Michiel De Kock)				Opponent Knipe, JMD (Johannes Michiel De Kock)

#	Games	Start				End
1	14	Tournament 2022 Western Province Club League				Tournament CT League 2024
		date 2022-08-27	rnd 1	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Amardien, A (Rafiek)				Opponent Ferreira, C (Craig)
2	3	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-24	rnd 7	type Standard	result 0.5	date 2024-08-31	rnd 9	type Standard	result 1
		Opponent Willenberg, RC (Roland)				Opponent Palmer, ZE (Zante)
3	1	Tournament CT League 2024				Tournament CT League 2024
		date 2024-09-07	rnd 11	type Standard	result 0.5	date 2024-09-07	rnd 11	type Standard	result 0.5
		Opponent Mcmanus, D (Dale)				Opponent Mcmanus, D (Dale)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2022 Western Province Club League				Tournament WP Club League 2023
		date 2022-10-01	rnd 7	type Standard	result 1	date 2023-08-19	rnd 6	type Standard	result 1
		Opponent Hartley, A (Ameen)				Opponent Roman, F (Fabian)
2	3	Tournament 2022 Western Province Club League				Tournament 2022 Western Province Club League
		date 2022-08-27	rnd 3	type Standard	result 1	date 2022-09-17	rnd 5	type Standard	result 1
		Opponent Vorster, P (Paul)				Opponent Osborne, N (Nicole)
3	2	Tournament WP Club League 2023				Tournament CT League 2024
		date 2023-08-26	rnd 8	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Palmer, NJ (Neil Justin)				Opponent Ntuli, S (Senzo)

#	Games	Start				End
1	3	Tournament 2022 Western Province Club League				Tournament WP Club League 2023
		date 2022-10-01	rnd 7	type Standard	result 1	date 2023-08-19	rnd 6	type Standard	result 1
		Opponent Hartley, A (Ameen)				Opponent Roman, F (Fabian)
2	3	Tournament 2022 Western Province Club League				Tournament 2022 Western Province Club League
		date 2022-08-27	rnd 3	type Standard	result 1	date 2022-09-17	rnd 5	type Standard	result 1
		Opponent Vorster, P (Paul)				Opponent Osborne, N (Nicole)
3	2	Tournament WP Club League 2023				Tournament CT League 2024
		date 2023-08-26	rnd 8	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Palmer, NJ (Neil Justin)				Opponent Ntuli, S (Senzo)

No games found.

#	Games	Start				End

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	Ferreira ,C (Craig)	1	1	425	1	1	425	0	0	0	0	0	0
1	Ferreira ,C (Craig)	1	1546.2	1971.2	1	1570.9	1971.2	0	0	0	0	0	0
2	Sinden ,RJ (Reginald John)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
2	Sinden ,RJ (Reginald John)	1	1511.4	1511.4	1	1526.2	1511.4	0	0	0	0	0	0
3	Van Niekerk ,L (Lizelle)	1	1	425	1	1	425	0	0	0	0	0	0
3	Van Niekerk ,L (Lizelle)	1	1359.4	1784.4	1	1336.2	1784.4	0	0	0	0	0	0
4	Roman ,F (Fabian)	1	1	425	1	1	425	0	0	0	0	0	0
4	Roman ,F (Fabian)	1	1304.8	1729.8	1	1300.8	1729.8	0	0	0	0	0	0
5	Jenkins ,T (Tauriq)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Jenkins ,T (Tauriq)	1	1481.9	1481.9	1	1455.8	1481.9	0	0	0	0	0	0
6	Willenberg ,RC (Roland Chester)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Willenberg ,RC (Roland Chester)	1	1690.3	1690.3	1	1670.2	1690.3	0	0	0	0	0	0
7	Khulu ,SS (Sibahle)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Khulu ,SS (Sibahle)	1	1561.3	1136.3	1	1507	1136.3	0	0	0	0	0	0
8	Klaasen ,CJ (Calvin John)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Klaasen ,CJ (Calvin John)	1	2199.2	1774.2	1	2226.3	1774.2	0	0	0	0	0	0
9	Knipe ,JMD (Johannes Michiel De Kock)	1	1	425	1	1	425	0	0	0	0	0	0
9	Knipe ,JMD (Johannes Michiel De Kock)	1	1850	2275	1	1858.9	2275	0	0	0	0	0	0
10	Mcmanus ,D (Dale)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Mcmanus ,D (Dale)	1	1589.3	1589.3	1	1555.2	1589.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Oerson, R (Roy)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms