Chess South Africa Ratings Database

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Personal

Odendaal, W (Willem)

Chess SA id

177028759

FIDE id

Date of birth

1977-02-15 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-05-03

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1645.4	1632.7	1485.2	1538
Raw rating	1643.7	1631.3	1485.2	1538
Weighted rating	1645.4	1632.7	1485.2	1538
Weighted performance	1321.6	1324.3	0	0
Floor	1177.7	1170.5	1038	1038
K-factor	28	28	32	32
Min/Max rating change allowed	88.1	89.7	110.4	102.4
Highest rating	1701.1 2019-02-01	1696.6 2019-02-01	1538 2019-12-01	1538 2024-02-01
Highest raw rating	1677.7 2024-08-01	1670.5 2024-08-01	1538 2019-12-01	1538 2024-02-01
Highest weighted rating	1677.7 2025-05-05	1670.5 2025-05-05	1538 2019-12-01	1538 2024-02-01
Highest weighted performance	1701.1 2019-02-01	1696.6 2019-02-01	1365.9 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0	0	0	0
New rating	1645.4	1632.7	1485.2	1538
Analysis
Rating	1645.4	1632.7	1485.2	1538
Raw rating	1643.7	1631.3	1485.2	1538
Weighted rating	1645.4	1632.7	1485.2
Weighted performance	1321.6	1324.3	0
K-factor	28	28	32	32
Floor	1177.7	1170.5	1038	1038
Max/Min rating change allowed	88.1	89.7	110.4	102.4
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	1643.7	1631.3	1485.2	1538
New weighted rating	1645.4	1632.7	1485.2	1538
New weighted performance	1312.6	1315.3	0	0
Temp new rating	1645.4	1632.7	1485.2	1538
Temp new rating +/-	-0	0	0	0
Final new rating +/-	-0	0	0	0
New rating	1645.4	1632.7	1485.2	1538
New K-factor	28	28	32	32
New floor	1177.7	1170.5	1038	1038

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	4	4	0	0
	15	15	0	0
	14	14	0	0
	5	5	0	0
	0	0	0	0
History	145	132	7	6

Games since
	Main 19	Standard 19		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	4	0	0	-425	1845.1	1420.1
Standard	4	0	0	-425	1845.1	1420.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	65	33	50.77	6.5	1583.2	1589.7
Standard	58	30	51.72	14.7	1589	1603.6
Rapid	7	3	42.86	-60.7	1535.5	1474.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1643.7	1631.3	1485.2	1538
2025-09-30	1643.7	1631.3	1485.2	1538
2025-09-01	1643.7	1631.3	1485.2	1538
2025-08-01	1643.7	1631.3	1485.2	1538
2025-07-01	1642.5	1630.3	1485.2	1538
2025-06-01	1639.7	1627.5	1485.2	1538
2025-05-01	1642.8	1630.7	1485.2	1538
2025-04-01	1642.8	1630.7	1485.2	1538
2025-03-01	1642.8	1630.7	1485.2	1538
2025-02-01	1642.8	1630.7	1485.2	1538
2025-01-01	1642.8	1630.7	1485.2	1538
2024-12-01	1642.8	1630.7	1485.2	1538
2024-11-01	1642.8	1630.7	1485.2	1538
2024-10-01	1642.8	1630.7	1485.2	1538
2024-09-01	1677.7	1670.5	1485.2	1538
2024-08-01	1677.7	1670.5	1485.2	1538
2024-07-01	1648	1628.5	1485.2	1538
2024-09-01	1648	1628.5	1485.2	1538
2024-05-01	1648	1628.5	1485.2	1538
2024-04-01	1648	1628.5	1485.2	1538
2024-03-01	1648	1628.5	1485.2	1538
2024-02-01	1648	1628.5	1485.2	1538
2024-01-01	1648	1628.5	1485.2	1538
2023-12-01	1561.8	1569.3	1485.2	1538

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	CPH May 2025 (A)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	CPH May 2025 (A)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
2	2024 West Rand Adults 2.0	2024-09-24	2024-09-24	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
3	Chess Power House July Open 2024 (A)	2024-07-20	2024-07-20	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
4	EN Chess Club Winter Open 2024 (A)	2024-06-29	2024-06-29	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
5	JNW Open - Crawford 2023 (A)	2023-03-04	2023-03-04	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
6	JMC 1 St Peters 2023 (A)	2023-03-18	2023-03-18	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
7	Heidelberg Open 2023 (A)	2023-02-04	2023-02-04	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
8	Mzansi Spring Open 2022 (Prestige)	2022-09-03	2022-09-03	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
9	Chess Power House End of Year Rapid 2019 (A)	2019-12-16	2019-12-16	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
10	JNW Club - Hoerskool Linden 2019 (A)	2019-06-15	2019-06-15	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
11	JNW Club - Trinityhouse Randpark Ridge Open 2019 (A)	2019-03-09	2019-03-09	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
12	JNW Club - Trinityhouse Little Falls Open 2019 (A)	2019-02-23	2019-02-23	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
13	Amigo Spur Eligwa Chess Open 2018 (A)	2018-05-19	2018-05-19	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament Chess Power House July Open 2024				Tournament 2024 West Rand Adults 2.0
		date 2024-07-20	rnd 4	type Standard	result 1	date 2024-09-24	rnd 3	type Standard	result 1
		Opponent Maduna, N (Ncese Mcebo)				Opponent Phakathi, S (Siyinqaba)
2	5	Tournament JMC 1 St Peters 2023				Tournament EN Chess Club Winter Open 2024
		date 2023-03-18	rnd 5	type Standard	result 1	date 2024-06-29	rnd 4	type Standard	result 1
		Opponent Kruger, T (Tobias)				Opponent Botiyana, A (Aphiwe)
3	3	Tournament JNW Club - Trinityhouse Randpark Ridge Open 2019				Tournament JNW Club - Trinityhouse Randpark Ridge Open 2019
		date 2019-03-09	rnd 2	type Standard	result 1	date 2019-03-09	rnd 4	type Standard	result 1
		Opponent Gardiner, N (Noa)				Opponent Steyn, R (Roan)

#	Games	Start				End
1	5	Tournament Chess Power House July Open 2024				Tournament 2024 West Rand Adults 2.0
		date 2024-07-20	rnd 4	type Standard	result 1	date 2024-09-24	rnd 3	type Standard	result 1
		Opponent Maduna, N (Ncese Mcebo)				Opponent Phakathi, S (Siyinqaba)
2	5	Tournament JMC 1 St Peters 2023				Tournament EN Chess Club Winter Open 2024
		date 2023-03-18	rnd 5	type Standard	result 1	date 2024-06-29	rnd 4	type Standard	result 1
		Opponent Kruger, T (Tobias)				Opponent Botiyana, A (Aphiwe)
3	3	Tournament JNW Club - Trinityhouse Randpark Ridge Open 2019				Tournament JNW Club - Trinityhouse Randpark Ridge Open 2019
		date 2019-03-09	rnd 2	type Standard	result 1	date 2019-03-09	rnd 4	type Standard	result 1
		Opponent Gardiner, N (Noa)				Opponent Steyn, R (Roan)

#	Games	Start				End
1	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 7	type Rapid	result 1	date 2019-12-16	rnd 7	type Rapid	result 1
		Opponent Booi, N (Nande)				Opponent Booi, N (Nande)
2	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 5	type Rapid	result 1	date 2019-12-16	rnd 5	type Rapid	result 1
		Opponent Seduma, K (Kgaugelo)				Opponent Seduma, K (Kgaugelo)
3	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 3	type Rapid	result 1	date 2019-12-16	rnd 3	type Rapid	result 1
		Opponent Mhaga, T (Tsholofelo)				Opponent Mhaga, T (Tsholofelo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Chess Power House July Open 2024				Tournament 2024 West Rand Adults 2.0
		date 2024-07-20	rnd 4	type Standard	result 1	date 2024-09-24	rnd 3	type Standard	result 1
		Opponent Maduna, N (Ncese Mcebo)				Opponent Phakathi, S (Siyinqaba)
2	5	Tournament JMC 1 St Peters 2023				Tournament EN Chess Club Winter Open 2024
		date 2023-03-18	rnd 5	type Standard	result 1	date 2024-06-29	rnd 4	type Standard	result 1
		Opponent Kruger, T (Tobias)				Opponent Botiyana, A (Aphiwe)
3	3	Tournament Amigo Spur Eligwa Chess Open 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Botes, D (Dion)				Opponent Emanuel, P (Prithee)

#	Games	Start				End
1	5	Tournament Chess Power House July Open 2024				Tournament 2024 West Rand Adults 2.0
		date 2024-07-20	rnd 4	type Standard	result 1	date 2024-09-24	rnd 3	type Standard	result 1
		Opponent Maduna, N (Ncese Mcebo)				Opponent Phakathi, S (Siyinqaba)
2	5	Tournament JMC 1 St Peters 2023				Tournament EN Chess Club Winter Open 2024
		date 2023-03-18	rnd 5	type Standard	result 1	date 2024-06-29	rnd 4	type Standard	result 1
		Opponent Kruger, T (Tobias)				Opponent Botiyana, A (Aphiwe)
3	3	Tournament Amigo Spur Eligwa Chess Open 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Botes, D (Dion)				Opponent Emanuel, P (Prithee)

#	Games	Start				End
1	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 7	type Rapid	result 1	date 2019-12-16	rnd 7	type Rapid	result 1
		Opponent Booi, N (Nande)				Opponent Booi, N (Nande)
2	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 5	type Rapid	result 1	date 2019-12-16	rnd 5	type Rapid	result 1
		Opponent Seduma, K (Kgaugelo)				Opponent Seduma, K (Kgaugelo)
3	1	Tournament Chess Power House End of Year Rapid 2019				Tournament Chess Power House End of Year Rapid 2019
		date 2019-12-16	rnd 3	type Rapid	result 1	date 2019-12-16	rnd 3	type Rapid	result 1
		Opponent Mhaga, T (Tsholofelo)				Opponent Mhaga, T (Tsholofelo)

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	Arnold ,M (Michael)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
1	Arnold ,M (Michael)	2	1547.5	1760	2	1546.8	1760	0	0	0	0	0	0
2	Gardiner ,N (Noa)	2	1	0	2	1	0	0	0	0	0	0	0
2	Gardiner ,N (Noa)	2	1451.3	1451.3	2	1440.8	1451.3	0	0	0	0	0	0
3	Khumalo ,L (Leeroy Duma)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Khumalo ,L (Leeroy Duma)	2	1490.3	1065.3	1	1482.5	1065.3	1	1200	1065.3	0	0	0
4	Kruger ,T (Tobias)	1	1	425	1	1	425	0	0	0	0	0	0
4	Kruger ,T (Tobias)	1	1536.4	1961.4	1	1520.3	1961.4	0	0	0	0	0	0
5	Weisz ,B (Benjamin)	1	1	425	1	1	425	0	0	0	0	0	0
5	Weisz ,B (Benjamin)	1	1594.2	2019.2	1	1595.4	2019.2	0	0	0	0	0	0
6	Molao ,R (Rethabile)	1	1	425	1	1	425	0	0	0	0	0	0
6	Molao ,R (Rethabile)	1	1253.3	1678.3	1	1248.7	1678.3	0	0	0	0	0	0
7	Chibase ,N (Nkosana)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Chibase ,N (Nkosana)	1	1536.7	1111.7	1	1535.9	1111.7	0	0	0	0	0	0
8	Maharaj ,A (Ameet)	1	1	425	1	1	425	0	0	0	0	0	0
8	Maharaj ,A (Ameet)	1	1437.3	1862.3	1	1435	1862.3	0	0	0	0	0	0
9	Phakathi ,S (Siyinqaba)	1	1	425	1	1	425	0	0	0	0	0	0
9	Phakathi ,S (Siyinqaba)	1	1395.8	1820.8	1	1433.2	1820.8	0	0	0	0	0	0
10	Mashao ,BM (Botlhale)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mashao ,BM (Botlhale)	1	1487.7	1912.7	1	1488.8	1912.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Odendaal, W (Willem)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms