Chess South Africa Ratings Database

PLAYER PAGE

Personal

Okkers, J (Jethro)

Chess SA id

1120140734

FIDE id

Date of birth

2012-11-14 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1133.6	1156.1	1139.1	1200
Raw rating	1133.6	1156.1	1139.1	1200
Weighted rating	1130.8	1156	1136.1	1200
Weighted performance	981.6	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	182.3	176.5	180.9	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1133.6	1156.1	1139.1	1200
Analysis
Rating	1133.6	1156.1	1139.1	1200
Raw rating	1133.6	1156.1	1139.1	1200
Weighted rating	1130.8	1156	1136.1
Weighted performance	981.6	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	182.3	176.5	180.9	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	1133.6	1156.1	1139.1	1200
New weighted rating	1131.2	1156	1136.7	1200
New weighted performance	981.2	0	0	0
Temp new rating	1133.6	1156.1	1139.1	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1133.6	1156.1	1139.1	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	15	5	10
	6	0	6
	2	2	0
	5	0	5
	0	0	0
History	28	7	21

Games since
	Main 21	Standard 5		Rapid 16		Blitz 0
Gender	Male
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	15	5	33.33	-141.7	1224.6	1082.9
Standard	5	1	20	-255	1225.5	970.5
Rapid	10	4	40	-85	1224.2	1139.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	28	8.5	30.36	-167	1211.7	1044.7
Standard	7	1	14.29	-303.6	1208.8	905.2
Rapid	21	7.5	35.71	-121.4	1212.7	1091.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1133.6	1156.1	1139.1	1200
2025-09-01	1131.5	1156.1	1142.3	1200
2025-08-01	1130	1156.1	1138	1200
2025-07-01	1129.7	1156.1	1138	1200
2025-06-01	1129.5	1156.1	1138	1200
2025-05-01	1129.2	1156.1	1138	1200
2025-04-01	1128.8	1155.8	1138	1200
2025-03-01	1126.9	1152.9	1138	1200
2025-02-01	1134.8	1156.4	1138	1200
2025-01-01	1134.8	1156.4	1138	1200
2024-12-01	1134.8	1156.4	1138	1200
2024-11-01	1134.8	1156.4	1138	1200
2024-10-01	1134.8	1156.4	1138	1200
2024-09-01	1134.8	1156.4	1138	1200
2024-08-01	1134.8	1156.4	1138	1200
2024-07-01	1134.8	1156.4	1138	1200
2024-06-01	1134.8	1156.4	1138	1200
2024-08-01	1119.1	1156.4	1113.2	1200
2024-04-01	1119.1	1156.4	1113.2	1200
2024-03-01	1119.1	1156.4	1113.2	1200
2024-02-01	1119.1	1156.4	1113.2	1200
2024-01-01	1119.1	1156.4	1113.2	1200
2023-12-01	1119.1	1156.4	1113.2	1200
2023-11-01	1119.1	1156.4	1113.2	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	Rhenish Primary 2025 (U14+Over)	2025-09-20	2025-09-20	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Stellenbosch Primary 2025 (U13)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Rhenish Primary 2025 (U14+Over)	2025-09-20	2025-09-20	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Stellenbosch Primary 2025 (U13)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
4	Rhenish PS Tournament 2024 (U14)	2024-05-11	2024-05-11	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
5	Cape Winelands Schools Chess - Trials 1 2023 (U11 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	2	0	Yes	Analysis
6	Rhenish Primary Tournament 2022 (U12)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	5	5	0.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament Rhenish PS Tournament 2024				Tournament Rhenish PS Tournament 2024
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2024-05-11	rnd 6	type Rapid	result 1
		Opponent Hendricks, J (Jayden)				Opponent Wareley, C (Caleb)
2	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Zimri, L (Lyle)				Opponent Zimri, L (Lyle)
3	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 2	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Philips, L (Lundon)				Opponent Philips, L (Lundon)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 2	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Kurtz, E (Eli)				Opponent Kurtz, E (Eli)

#	Games	Start				End
1	3	Tournament Rhenish PS Tournament 2024				Tournament Stellenbosch Primary 2025
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 1
		Opponent Hendricks, J (Jayden)				Opponent Jonkers, C (Cyrus)
2	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Zimri, L (Lyle)				Opponent Zimri, L (Lyle)
3	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 2	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Philips, L (Lundon)				Opponent Philips, L (Lundon)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Rhenish PS Tournament 2024				Tournament Rhenish PS Tournament 2024
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2024-05-11	rnd 6	type Rapid	result 1
		Opponent Hendricks, J (Jayden)				Opponent Wareley, C (Caleb)
2	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Zimri, L (Lyle)				Opponent Zimri, L (Lyle)
3	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 2	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Philips, L (Lundon)				Opponent Philips, L (Lundon)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 2	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Kurtz, E (Eli)				Opponent Kurtz, E (Eli)

#	Games	Start				End
1	3	Tournament Rhenish PS Tournament 2024				Tournament Stellenbosch Primary 2025
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 1
		Opponent Hendricks, J (Jayden)				Opponent Jonkers, C (Cyrus)
2	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Zimri, L (Lyle)				Opponent Zimri, L (Lyle)
3	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 2	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Philips, L (Lundon)				Opponent Philips, L (Lundon)

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	Herklaas ,J (Josh)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Herklaas ,J (Josh)	1	1134	709	1	1120.8	709	0	0	0	0	0	0
2	Afrika ,M (Mitayo)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Afrika ,M (Mitayo)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Young ,G (Gregory)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Young ,G (Gregory)	1	1328.4	903.4	1	1251	903.4	0	0	0	0	0	0
4	Hardens ,M (Marcello)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Hardens ,M (Marcello)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	De Villiers ,J (Joa)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	De Villiers ,J (Joa)	1	1199.2	774.2	1	1198.9	774.2	0	0	0	0	0	0
6	De Waal ,P (Pieter)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	De Waal ,P (Pieter)	1	1210.1	785.1	0	0	0	1	1241.4	785.1	0	0	0
7	Xibiya ,L (Lerato)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Xibiya ,L (Lerato)	1	1200	775	0	0	0	1	1200	775	0	0	0
8	Boshoff ,M (Matthew)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Boshoff ,M (Matthew)	1	1155.8	730.8	0	0	0	1	1124	730.8	0	0	0
9	Makone ,E (Ethan)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Makone ,E (Ethan)	1	1232.9	807.9	0	0	0	1	1227.4	807.9	0	0	0
10	Kwabe ,A (Awonke)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Kwabe ,A (Awonke)	1	1237.7	812.7	0	0	0	1	1155.2	812.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Okkers, J (Jethro)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms