Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koopman, J (Jayden)

Chess SA id

1090137478

FIDE id

Date of birth

2009-08-26 (U18)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-02-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1071.8

Item	Main	Standard	Rapid	Blitz
Rating	1244.7	1188.9	1269.7	1200
Raw rating	1243.8	1188.9	1269.7	1200
Weighted rating	1244.7	1188.7	1268.8	1200
Weighted performance	1002.1	954.5	976.3	0
Floor	759.8	702	773.7	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.8	168.5	150.1	165.8
Highest rating	1276.5 2022-03-01	1217.5 2022-03-01	1273.7 2024-03-01	1200 2018-10-01
Highest raw rating	1259.8 2024-07-01	1202 2022-04-01	1273.7 2024-03-01	1200 2024-02-01
Highest weighted rating	1259.8 2025-02-01	1202 2018-10-01	1266 2025-08-01	1200 2018-10-01
Highest weighted performance	1276.5 2022-03-01	1217.5 2022-03-01	1262.3 2023-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	0	0	0
New rating	1244.8	1188.9	1269.7	1200
Analysis
Rating	1244.7	1188.9	1269.7	1200
Raw rating	1243.8	1188.9	1269.7	1200
Weighted rating	1244.7	1188.7	1268.8
Weighted performance	1002.1	954.5	976.3
K-factor	36	36	36	36
Floor	759.8	702	773.7	700
Max/Min rating change allowed	155.8	168.5	150.1	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	1243.8	1188.9	1269.7	1200
New weighted rating	1244.8	1188.6	1269.3	1200
New weighted performance	995.2	947.8	968.8	0
Temp new rating	1244.8	1188.9	1269.7	1200
Temp new rating +/-	0.1	0	0	0
Final new rating +/-	0.1	0	0	0
New rating	1244.8	1188.9	1269.7	1200
New K-factor	36	36	36	36
New floor	759.8	702	773.7	700

Item	Main	Standard	Rapid
	0	0	0
	5	5	0
	23	11	12
	21	11	10
	22	17	5
	0	0	0
History	71	44	27

Games since
	Main 28	Standard 16		Rapid 12		Blitz 0
Gender	Male
Age group	U18
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	40	-85	1164.6	1079.6
Standard	5	2	40	-85	1164.6	1079.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	71	36.5	51.41	12	1224.8	1236.8
Standard	44	21.5	48.86	-9.7	1192.4	1182.7
Rapid	27	15	55.56	47.2	1277.7	1325
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1243.8	1188.9	1269.7	1200
2025-09-30	1243.8	1188.9	1269.7	1200
2025-09-01	1243.8	1188.9	1269.7	1200
2025-08-01	1243.8	1188.9	1269.7	1200
2025-07-01	1243.2	1188.9	1269.7	1200
2025-06-01	1242.6	1188.9	1269.7	1200
2025-05-01	1241.9	1188.9	1269.7	1200
2025-04-01	1241.1	1188.7	1269.7	1200
2025-03-01	1238.4	1187.2	1269.7	1200
2025-02-01	1239.9	1188.2	1269.7	1200
2025-01-01	1236.5	1179.7	1269.7	1200
2024-12-01	1236.5	1179.7	1269.7	1200
2024-11-01	1259.8	1191.6	1269.7	1200
2024-10-01	1259.8	1191.6	1269.7	1200
2024-09-01	1259.8	1191.6	1269.7	1200
2024-08-01	1259.8	1191.6	1269.7	1200
2024-07-01	1259.8	1191.6	1269.7	1200
2024-09-01	1249.3	1191.6	1273.7	1200
2024-05-01	1249.3	1191.6	1273.7	1200
2024-04-01	1249.3	1191.6	1273.7	1200
2024-03-01	1254.7	1193	1273.7	1200
2024-02-01	1210.5	1193	1210.3	1200
2024-01-01	1210.5	1193	1210.3	1200
2023-12-01	1210.5	1193	1210.3	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	Cape Winelands Schools - Trials 1 2025 (U17 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Winelands Schools - Trials 1 2025 (U17 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Paarl Boys' High Chess Festival 2024 (C)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	Western Cape - Brian Raubenheimer Development Tournament 2024 (U15 Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
4	Cape Winelands Schools - Prestige 2024 (U15 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
5	Cape Winelands Schools - HS Trials 1 2024 (U15 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
6	Paarl Boys High Chess Festival 2023 (2nd Division)	2023-10-13	2023-10-14	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
7	CW Top Schools 2023 (U15 Mix)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
8	Courtrai Midas Rapid 2023 (U14)	2023-03-04	2023-03-04	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Cape Winelands Schools Chess - Trials 1 2023 (U15 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
10	Western Cape Schools 2022 (U13 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
11	Cape Winelands Schools 2022 (U13 Boys)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
12	Central Winelands Schools Individual Trials 2022 (U13 Boys)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
13	Cape Winelands Open 2022 (U14)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

#	Games	Start				End
1	7	Tournament Paarl Boys High Chess Festival 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-10-14	rnd 4	type Standard	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Cloete, A (Alison)				Opponent Van Niekerk, R (Ruben)
2	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Mofokeng, B (Bokang Gift Phoka)				Opponent Odell, E (Eugene)
3	3	Tournament Central Winelands Schools Individual Trials 2022				Tournament Cape Winelands Schools 2022
		date 2022-02-19	rnd 5	type Rapid	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Cupido, S (Sergio)				Opponent Dangazele, S (Sibabalwe)

#	Games	Start				End
1	3	Tournament Paarl Boys High Chess Festival 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-10-14	rnd 4	type Standard	result 1	date 2023-10-14	rnd 6	type Standard	result 1
		Opponent Cloete, A (Alison)				Opponent Nel, P (Pierre)
2	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Mofokeng, B (Bokang Gift Phoka)				Opponent Odell, E (Eugene)
3	2	Tournament Paarl Boys' High Chess Festival 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-10-04	rnd 2	type Standard	result 1	date 2024-10-04	rnd 3	type Standard	result 1
		Opponent William, L (Layla)				Opponent Beyleveldt, A (Adriaan Jakobus)

#	Games	Start				End
1	5	Tournament CW Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-08-26	rnd 5	type Rapid	result 0.5	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Odell, E (Eugene)				Opponent Van Niekerk, R (Ruben)
2	3	Tournament Central Winelands Schools Individual Trials 2022				Tournament Courtrai Midas Rapid 2023
		date 2022-02-19	rnd 5	type Rapid	result 1	date 2023-03-04	rnd 2	type Rapid	result 1
		Opponent Cupido, S (Sergio)				Opponent Harris, R (Rahul)
3	2	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-02-17	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 1	type Rapid	result 1
		Opponent Adams, R (Raylin)				Opponent Kiewiet, B (B Jay)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Paarl Boys High Chess Festival 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-10-14	rnd 4	type Standard	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Cloete, A (Alison)				Opponent Nel, J (Jaap)
2	3	Tournament Central Winelands Schools Individual Trials 2022				Tournament Cape Winelands Schools 2022
		date 2022-02-19	rnd 5	type Rapid	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Cupido, S (Sergio)				Opponent Dangazele, S (Sibabalwe)
3	2	Tournament Paarl Boys' High Chess Festival 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-10-04	rnd 2	type Standard	result 1	date 2024-10-04	rnd 3	type Standard	result 1
		Opponent William, L (Layla)				Opponent Beyleveldt, A (Adriaan Jakobus)

#	Games	Start				End
1	3	Tournament Paarl Boys High Chess Festival 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-10-14	rnd 4	type Standard	result 1	date 2023-10-14	rnd 6	type Standard	result 1
		Opponent Cloete, A (Alison)				Opponent Nel, P (Pierre)
2	2	Tournament Paarl Boys' High Chess Festival 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-10-04	rnd 2	type Standard	result 1	date 2024-10-04	rnd 3	type Standard	result 1
		Opponent William, L (Layla)				Opponent Beyleveldt, A (Adriaan Jakobus)
3	2	Tournament Cape Winelands Schools - Prestige 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Hugo, E (Emil)				Opponent Titus, J (Jordyn)

#	Games	Start				End
1	3	Tournament Central Winelands Schools Individual Trials 2022				Tournament Courtrai Midas Rapid 2023
		date 2022-02-19	rnd 5	type Rapid	result 1	date 2023-03-04	rnd 2	type Rapid	result 1
		Opponent Cupido, S (Sergio)				Opponent Harris, R (Rahul)
2	2	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-02-17	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 1	type Rapid	result 1
		Opponent Adams, R (Raylin)				Opponent Kiewiet, B (B Jay)
3	2	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Grobbelaar, A (Altus)				Opponent Van Niekerk, R (Ruben)

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	Grobbelaar ,A (Altus)	2	1	0	1	0	-425	1	1	425	0	0	0
1	Grobbelaar ,A (Altus)	2	1219.6	1219.6	1	1112.8	794.6	1	1238.8	1644.6	0	0	0
2	Odell ,E (Eugene)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
2	Odell ,E (Eugene)	2	1214.9	1427.4	1	1200	1639.9	1	1235.6	1214.9	0	0	0
3	Bukani ,H (Howard-Lee)	2	2	425	1	1	425	1	1	425	0	0	0
3	Bukani ,H (Howard-Lee)	2	1114.8	1539.8	1	1138.4	1539.8	1	1188	1539.8	0	0	0
4	Strydom ,MJ (Matthys Jacobus)	2	0	-425	0	0	0	2	0	-425	0	0	0
4	Strydom ,MJ (Matthys Jacobus)	2	1460.8	1035.8	0	0	0	2	1418.2	1035.8	0	0	0
5	De Waal ,L (Liam)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	De Waal ,L (Liam)	1	1571.7	1146.7	1	1586.9	1146.7	0	0	0	0	0	0
6	Crotz ,K (Kirsten)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Crotz ,K (Kirsten)	1	1185.2	760.2	1	1103	760.2	0	0	0	0	0	0
7	Vosloo ,T (Tom)	1	1	425	1	1	425	0	0	0	0	0	0
7	Vosloo ,T (Tom)	1	1174.1	1599.1	1	1164.8	1599.1	0	0	0	0	0	0
8	Matinywa ,T (Thobani)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Matinywa ,T (Thobani)	1	1111.7	686.7	1	1103.6	686.7	0	0	0	0	0	0
9	Beyleveldt ,A (Adriaan Jakobus)	1	1	425	1	1	425	0	0	0	0	0	0
9	Beyleveldt ,A (Adriaan Jakobus)	1	1159.8	1584.8	1	1153.2	1584.8	0	0	0	0	0	0
10	Lielieveld ,J (Jadrian)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Lielieveld ,J (Jadrian)	1	1567.4	1142.4	1	1584.1	1142.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Koopman, J (Jayden)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms