Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonkers, D (Devan)

Chess SA id

1020099711

FIDE id

Date of birth

2002-08-13 (Adult)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-02-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1107.5	1110	1134.4	1200
Raw rating	1107.5	1110	1134.4	1200
Weighted rating	1107.5	1110	1134.4	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	189.2	188.5	182.1	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1107.5	1110	1134.4	1200
Analysis
Rating	1107.5	1110	1134.4	1200
Raw rating	1107.5	1110	1134.4	1200
Weighted rating	1107.5	1110	1134.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	189.2	188.5	182.1	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	1107.5	1110	1134.4	1200
New weighted rating	1107.5	1110	1134.4	1200
New weighted performance	0	0	0	0
Temp new rating	1107.5	1110	1134.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1107.5	1110	1134.4	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	14	6	8

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	West Coast (WCU)
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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	14	5	35.71	-121.4	1081.7	960.2
Standard	6	2	33.33	-141.7	986.3	844.6
Rapid	8	3	37.5	-106.2	1153.2	1046.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1107.5	1110	1134.4	1200
2025-09-01	1107.5	1110	1134.4	1200
2025-08-01	1107.5	1110	1134.4	1200
2025-07-01	1107.5	1110	1134.4	1200
2025-06-01	1107.5	1110	1134.4	1200
2025-05-01	1107.5	1110	1134.4	1200
2025-04-01	1107.5	1110	1134.4	1200
2025-03-01	1107.5	1110	1134.4	1200
2025-02-01	1107.5	1110	1134.4	1200
2025-01-01	1107.5	1110	1134.4	1200
2024-12-01	1107.5	1110	1134.4	1200
2024-11-01	1107.5	1110	1134.4	1200
2024-10-01	1107.5	1110	1134.4	1200
2024-09-01	1107.5	1110	1134.4	1200
2024-08-01	1107.5	1110	1134.4	1200
2024-07-01	1107.5	1110	1134.4	1200
2024-06-01	1107.5	1110	1134.4	1200
2024-08-01	1107.5	1110	1134.4	1200
2024-04-01	1107.5	1110	1134.4	1200
2024-03-01	1107.5	1110	1134.4	1200
2024-02-01	1107.5	1110	1134.4	1200
2024-01-01	1107.5	1110	1134.4	1200
2023-12-01	1107.5	1110	1134.4	1200
2023-11-01	1107.5	1110	1134.4	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Onder-Weskus Skole Proewe 2019 (O18 Seuns)	2019-02-16	2019-02-23	Rapid	West Coast (WCU)	8	8	3	Yes	Analysis
2	West Coast Schools Prestige Individual Championship 2018 (U18 Boys)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Luke, E (Eric)				Opponent Vlotman, J (Jadrian)
2	1	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-23	rnd 7	type Rapid	result 1	date 2019-02-23	rnd 7	type Rapid	result 1
		Opponent Kok, C (Craig)				Opponent Kok, C (Craig)
3	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-03-24	rnd 5	type Standard	result 1
		Opponent Noemdoe, E (Edgar)				Opponent Noemdoe, E (Edgar)

#	Games	Start				End
1	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-03-24	rnd 5	type Standard	result 1
		Opponent Noemdoe, E (Edgar)				Opponent Noemdoe, E (Edgar)
2	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 1	type Standard	result 1
		Opponent Douries, C (Charl)				Opponent Douries, C (Charl)

#	Games	Start				End
1	2	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Luke, E (Eric)				Opponent Vlotman, J (Jadrian)
2	1	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-23	rnd 7	type Rapid	result 1	date 2019-02-23	rnd 7	type Rapid	result 1
		Opponent Kok, C (Craig)				Opponent Kok, C (Craig)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Luke, E (Eric)				Opponent Vlotman, J (Jadrian)
2	1	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-23	rnd 7	type Rapid	result 1	date 2019-02-23	rnd 7	type Rapid	result 1
		Opponent Kok, C (Craig)				Opponent Kok, C (Craig)
3	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-03-24	rnd 5	type Standard	result 1
		Opponent Noemdoe, E (Edgar)				Opponent Noemdoe, E (Edgar)

#	Games	Start				End
1	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-03-24	rnd 5	type Standard	result 1
		Opponent Noemdoe, E (Edgar)				Opponent Noemdoe, E (Edgar)
2	1	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 1	type Standard	result 1
		Opponent Douries, C (Charl)				Opponent Douries, C (Charl)

#	Games	Start				End
1	2	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Luke, E (Eric)				Opponent Vlotman, J (Jadrian)
2	1	Tournament Onder-Weskus Skole Proewe 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-23	rnd 7	type Rapid	result 1	date 2019-02-23	rnd 7	type Rapid	result 1
		Opponent Kok, C (Craig)				Opponent Kok, C (Craig)

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	Karolus ,R (Reagan)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Karolus ,R (Reagan)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Noemdoe ,E (Edgar)	1	1	425	1	1	425	0	0	0	0	0	0
2	Noemdoe ,E (Edgar)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Douries ,C (Charl)	1	1	425	1	1	425	0	0	0	0	0	0
3	Douries ,C (Charl)	1	893.8	1318.8	1	893.8	1318.8	0	0	0	0	0	0
4	Irish ,D (Duwayne)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Irish ,D (Duwayne)	1	534.4	109.4	1	534.4	109.4	0	0	0	0	0	0
5	Dirks ,D (Divan)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Dirks ,D (Divan)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Cloete ,A (Angelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Cloete ,A (Angelo)	1	889.4	464.4	1	889.4	464.4	0	0	0	0	0	0
7	Small ,W (Waydin)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Small ,W (Waydin)	1	1200	775	0	0	0	1	1200	775	0	0	0
8	Khumalo ,A (Anele)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Khumalo ,A (Anele)	1	1196.1	771.1	0	0	0	1	1200	771.1	0	0	0
9	Eygelaar ,FC (Fc)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Eygelaar ,FC (Fc)	1	1044.5	619.5	0	0	0	1	844	619.5	0	0	0
10	Nero ,J (Juan)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Nero ,J (Juan)	1	1151	726	0	0	0	1	1002.6	726	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jonkers, D (Devan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms