Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oerson, M (Marcello)

Chess SA id

1020097137

FIDE id

Date of birth

2002-07-04 (Adult)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1184.1	1088.4	1216.2	1200
Raw rating	1184.1	1088.4	1216.2	1200
Weighted rating	1163.2	1088.4	1197.6	1200
Weighted performance	632.4	0	647.5	0
Floor	700	700	716.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	169.6	194.4	162	165.8
Highest rating	1200 2018-02-01	1200 2018-10-01	1216.2 2025-11-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1216.2 2025-11-01	1200 2024-03-01
Highest weighted rating	1200 2018-02-01	1200 2018-10-01	1200 2018-02-01	1200 2018-10-01
Highest weighted performance	1200 2024-12-01	1200 2018-02-01	1200 2024-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1184.1	1088.4	1216.2	1200
Analysis
Rating	1184.1	1088.4	1216.2	1200
Raw rating	1184.1	1088.4	1216.2	1200
Weighted rating	1163.2	1088.4	1197.6
Weighted performance	632.4	0	647.5
K-factor	36	36	36	36
Floor	700	700	716.2	700
Max/Min rating change allowed	169.6	194.4	162	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	1184.1	1088.4	1216.2	1200
New weighted rating	1165	1088.4	1199.2	1200
New weighted performance	625.3	0	640.2	0
Temp new rating	1184.1	1088.4	1216.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1184.1	1088.4	1216.2	1200
New K-factor	36	36	36	36
New floor	700	700	716.2	700

Item	Main	Standard	Rapid
	0	0	0
	5	0	5
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	38	7	31

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Winelands (WCW)
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	5	2.5	50	0	1338.9	1338.9
Standard	0	0	0	0	0	0
Rapid	5	2.5	50	0	1338.9	1338.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	38	19	50	0	1124.3	1124.3
Standard	7	3	42.86	-60.7	1002.9	942.2
Rapid	31	16	51.61	13.7	1151.7	1165.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1184.1	1088.4	1216.2	1200
2025-09-30	1161.4	1088.4	1196	1200
2025-09-01	1161.4	1088.4	1196	1200
2025-08-01	1161.4	1088.4	1196	1200
2025-07-01	1161.4	1088.4	1196	1200
2025-06-01	1161.4	1088.4	1196	1200
2025-05-01	1161.4	1088.4	1196	1200
2025-04-01	1161.4	1088.4	1196	1200
2025-03-01	1161.4	1088.4	1196	1200
2025-02-01	1161.4	1088.4	1196	1200
2025-01-01	1161.4	1088.4	1196	1200
2024-12-01	1161.4	1088.4	1196	1200
2024-11-01	1161.4	1088.4	1196	1200
2024-10-01	1161.4	1088.4	1196	1200
2024-09-01	1161.4	1088.4	1196	1200
2024-08-01	1161.4	1088.4	1196	1200
2024-07-01	1161.4	1088.4	1196	1200
2024-09-01	1161.4	1088.4	1196	1200
2024-05-01	1161.4	1088.4	1196	1200
2024-04-01	1161.4	1088.4	1196	1200
2024-03-01	1161.4	1088.4	1196	1200
2024-02-01	1161.4	1088.4	1196	1200
2024-01-01	1161.4	1088.4	1196	1200
2023-12-01	1161.4	1088.4	1196	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	Langeberg Club 2025 (High School+Open)	2025-10-04	2025-10-04	Rapid	Cape Winelands (WCW)	6	5	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Langeberg Club 2025 (High School+Open)	2025-10-04	2025-10-04	Rapid	Cape Winelands (WCW)	6	5	2.5	Yes	Analysis
2	Robertson Chess 2020 (U19)	2020-03-07	2020-03-07	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
3	Cape Winelands Schools Trials 1 2020 (U18 Boys)	2020-02-15	2020-02-15	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
4	Cape Winelands Schools - Top Schools 2019 (U18 Mix)	2019-07-27	2019-07-27	Rapid	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
5	Cape Winelands Schools Closed 2019 (U18+U20 Boys)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	7	3	Yes	Analysis
6	CW Schools Open 2019 (U18+U20 Boys)	2019-02-02	2019-02-02	Rapid	Cape Winelands (WCW)	6	5	3	Yes	Analysis
7	North Boland Trials 2018 (U18 Boys)	2018-02-17	2018-02-17	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Robertson Chess 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Hendricks, D (Damian)				Opponent Galant, K (Keagan)
2	3	Tournament CW Schools Open 2019				Tournament CW Schools Open 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-02-02	rnd 5	type Rapid	result 1
		Opponent Nel, C (Cyle)				Opponent Engelbrecht, S (Stean)
3	2	Tournament Langeberg Club 2025				Tournament Langeberg Club 2025
		date 2025-10-04	rnd 5	type Rapid	result 0.5	date 2025-10-04	rnd 6	type Rapid	result 1
		Opponent Davids, JW (Jo-Wayne)				Opponent Viljoen, L (Lienka)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools Closed 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-03-17	rnd 5	type Standard	result 1
		Opponent Kotze, S (Shandre)				Opponent De Lange, L (Lynndon)
2	1	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools Closed 2019
		date 2019-03-16	rnd 1	type Standard	result 1	date 2019-03-16	rnd 1	type Standard	result 1
		Opponent Ntlebi, C (Chuma)				Opponent Ntlebi, C (Chuma)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Robertson Chess 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Hendricks, D (Damian)				Opponent Galant, K (Keagan)
2	3	Tournament CW Schools Open 2019				Tournament CW Schools Open 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-02-02	rnd 5	type Rapid	result 1
		Opponent Nel, C (Cyle)				Opponent Engelbrecht, S (Stean)
3	2	Tournament Cape Winelands Schools - Top Schools 2019				Tournament Cape Winelands Schools - Top Schools 2019
		date 2019-07-27	rnd 1	type Rapid	result 0.5	date 2019-07-27	rnd 2	type Rapid	result 1
		Opponent Mecuur, L (Logan)				Opponent Saayman, D (Dean)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Robertson Chess 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Hendricks, D (Damian)				Opponent Galant, K (Keagan)
2	3	Tournament CW Schools Open 2019				Tournament CW Schools Open 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-02-02	rnd 5	type Rapid	result 1
		Opponent Nel, C (Cyle)				Opponent Engelbrecht, S (Stean)
3	2	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools Closed 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-03-17	rnd 5	type Standard	result 1
		Opponent Kotze, S (Shandre)				Opponent De Lange, L (Lynndon)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools Closed 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-03-17	rnd 5	type Standard	result 1
		Opponent Kotze, S (Shandre)				Opponent De Lange, L (Lynndon)
2	1	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools Closed 2019
		date 2019-03-16	rnd 1	type Standard	result 1	date 2019-03-16	rnd 1	type Standard	result 1
		Opponent Ntlebi, C (Chuma)				Opponent Ntlebi, C (Chuma)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Robertson Chess 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Hendricks, D (Damian)				Opponent Galant, K (Keagan)
2	3	Tournament CW Schools Open 2019				Tournament CW Schools Open 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-02-02	rnd 5	type Rapid	result 1
		Opponent Nel, C (Cyle)				Opponent Engelbrecht, S (Stean)
3	1	Tournament Robertson Chess 2020				Tournament Robertson Chess 2020
		date 2020-03-07	rnd 5	type Rapid	result 1	date 2020-03-07	rnd 5	type Rapid	result 1
		Opponent Friesland, A (Ashwin)				Opponent Friesland, A (Ashwin)

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	Engelbrecht ,S (Stean)	2	1	0	0	0	0	2	1	0	0	0	0
1	Engelbrecht ,S (Stean)	2	1168.2	1168.2	0	0	0	2	1072.8	1168.2	0	0	0
2	Palmer ,K (Keagan)	2	0	-425	0	0	0	2	0	-425	0	0	0
2	Palmer ,K (Keagan)	2	1498.9	1073.9	0	0	0	2	1398.9	1073.9	0	0	0
3	Mitchell ,R (Raynard)	2	0	-425	0	0	0	2	0	-425	0	0	0
3	Mitchell ,R (Raynard)	2	1302.9	877.9	0	0	0	2	1291.7	877.9	0	0	0
4	Abrahams ,L (Lucian)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Abrahams ,L (Lucian)	1	843.5	418.5	1	721.6	418.5	0	0	0	0	0	0
5	Augustyn ,J (Jean-Jacques)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Augustyn ,J (Jean-Jacques)	1	1177.4	752.4	1	1123.4	752.4	0	0	0	0	0	0
6	Kotze ,S (Shandre)	1	1	425	1	1	425	0	0	0	0	0	0
6	Kotze ,S (Shandre)	1	1083.6	1508.6	1	1114.4	1508.6	0	0	0	0	0	0
7	Saayman ,D (Dean)	1	1	425	0	0	0	1	1	425	0	0	0
7	Saayman ,D (Dean)	1	908.2	1333.2	0	0	0	1	887.5	1333.2	0	0	0
8	Dyantyi ,L (Liyabona)	1	1	425	0	0	0	1	1	425	0	0	0
8	Dyantyi ,L (Liyabona)	1	500	925	0	0	0	1	500	925	0	0	0
9	Van Zyl ,C (Carien)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Van Zyl ,C (Carien)	1	1375.2	950.2	0	0	0	1	1240	950.2	0	0	0
10	Galant ,K (Keagan)	1	1	425	0	0	0	1	1	425	0	0	0
10	Galant ,K (Keagan)	1	1205	1630	0	0	0	1	1200.8	1630	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Oerson, M (Marcello)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms