Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonker, A (Adrian)

Chess SA id

110094414

FIDE id

Date of birth

2010-04-22 (U16)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-03-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1056.2	1050.7	1167.2	1200
Raw rating	1056.2	1050.7	1167.2	1200
Weighted rating	1056.2	1050.7	1167.2	1200
Weighted performance	274.5	272.6	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	203.5	205.1	173.7	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1056.2	1050.7	1167.2	1200
Analysis
Rating	1056.2	1050.7	1167.2	1200
Raw rating	1056.2	1050.7	1167.2	1200
Weighted rating	1056.2	1050.7	1167.2
Weighted performance	274.5	272.6	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	203.5	205.1	173.7	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	1056.2	1050.7	1167.2	1200
New weighted rating	1056.2	1050.7	1167.2	1200
New weighted performance	268.2	266.4	0	0
Temp new rating	1056.2	1050.7	1167.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1056.2	1050.7	1167.2	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	76	66	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	71	27	38.03	-101.8	1086.1	984.3
Standard	66	24.5	37.12	-109.5	1091.8	982.3
Rapid	5	2.5	50	0	1011	1011
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1056.2	1050.7	1167.2	1200
2025-09-30	1056.2	1050.7	1167.2	1200
2025-09-01	1056.2	1050.7	1167.2	1200
2025-08-01	1056.2	1050.7	1167.2	1200
2025-07-01	1056.2	1050.7	1167.2	1200
2025-06-01	1056.2	1050.7	1167.2	1200
2025-05-01	1056.2	1050.7	1167.2	1200
2025-04-01	1056.2	1050.7	1167.2	1200
2025-03-01	1056.2	1050.7	1167.2	1200
2025-02-01	1056.2	1050.7	1167.2	1200
2025-01-01	1056.2	1050.7	1167.2	1200
2024-12-01	1056.2	1050.7	1167.2	1200
2024-11-01	1056.2	1050.7	1167.2	1200
2024-10-01	1056.2	1050.7	1167.2	1200
2024-09-01	1056.2	1050.7	1167.2	1200
2024-08-01	1056.2	1050.7	1167.2	1200
2024-07-01	1056.2	1050.7	1167.2	1200
2024-09-01	1056.2	1050.7	1167.2	1200
2024-05-01	1056.2	1050.7	1167.2	1200
2024-04-01	1056.2	1050.7	1167.2	1200
2024-03-01	1056.2	1050.7	1167.2	1200
2024-02-01	1056.2	1050.7	1167.2	1200
2024-01-01	1056.2	1050.7	1167.2	1200
2023-12-01	1056.2	1050.7	1167.2	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	2020 NMBCU Chess Trials 2 2020 (U12)	2020-03-07	2020-03-07	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
2	2020 Boardwalk Pearson Open Chess Festival (Open)	2020-03-14	2020-03-15	Standard	Nelson Mandela Bay (ENM)	5	1	0	Yes	Analysis
3	2019 South African Junior Team Championships (U10A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
4	NMBYCC Closed 2019 (U10)	2019-07-26	2019-07-27	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
5	Nelson Mandela Bay Junior Trials 4 2019 (U10)	2019-07-12	2019-07-13	Standard	Nelson Mandela Bay (ENM)	6	5	2.5	Yes	Analysis
6	NMBJCU Trials 3 2019 (U10)	2019-05-10	2019-05-11	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis
7	NMBCU Trials 1 2019 (U10)	2019-03-08	2019-03-09	Standard	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis
8	NMBJC Closed 2018 (U10)	2018-07-27	2018-07-28	Standard	Nelson Mandela Bay (ENM)	6	6	1	Yes	Analysis
9	NMBJC Trials 4 2018 (U10)	2018-07-20	2018-07-21	Standard	Nelson Mandela Bay (ENM)	5	5	1	Yes	Analysis
10	NMB Youth Chess Trial 3 2018 (U10)	2018-05-11	2018-05-12	Standard	Nelson Mandela Bay (ENM)	6	5	2	Yes	Analysis
11	NMB Second Trials 2018 (U10)	2018-04-20	2018-04-22	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
12	NMB First Trails 2018 (U10)	2018-03-23	2018-03-24	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
13	Registration Tournament 2018 (B)	2018-02-23	2018-02-24	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
14	Despatch Open 2018 (B)	2018-02-17	2018-02-17	Rapid	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament NMBYCC Closed 2019				Tournament NMBYCC Closed 2019
		date 2019-07-27	rnd 2	type Standard	result 1	date 2019-07-27	rnd 4	type Standard	result 1
		Opponent Odendaal, F (Farrel)				Opponent Fourie, T (Tiaart)
2	3	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 3	type Rapid	result 0.5
		Opponent Hartley, A (Abigail)				Opponent Le Roux, JC (Jean)
3	2	Tournament 2019 South African Junior Team Championships				Tournament 2020 NMBCU Chess Trials 2 2020
		date 2020-01-08	rnd 7	type Standard	result 0.5	date 2020-03-07	rnd 1	type Standard	result 1
		Opponent Pillay, T (Tahir)				Opponent Matthews, D (Devon)

#	Games	Start				End
1	3	Tournament NMBYCC Closed 2019				Tournament NMBYCC Closed 2019
		date 2019-07-27	rnd 2	type Standard	result 1	date 2019-07-27	rnd 4	type Standard	result 1
		Opponent Odendaal, F (Farrel)				Opponent Fourie, T (Tiaart)
2	2	Tournament 2019 South African Junior Team Championships				Tournament 2020 NMBCU Chess Trials 2 2020
		date 2020-01-08	rnd 7	type Standard	result 0.5	date 2020-03-07	rnd 1	type Standard	result 1
		Opponent Pillay, T (Tahir)				Opponent Matthews, D (Devon)
3	2	Tournament Nelson Mandela Bay Junior Trials 4 2019				Tournament Nelson Mandela Bay Junior Trials 4 2019
		date 2019-07-13	rnd 5	type Standard	result 1	date 2019-07-13	rnd 6	type Standard	result 0.5
		Opponent Ngqunge, E (Elnathan)				Opponent Charles, C (Caleb)

#	Games	Start				End
1	3	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 3	type Rapid	result 0.5
		Opponent Hartley, A (Abigail)				Opponent Le Roux, JC (Jean)
2	1	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 5	type Rapid	result 0.5	date 2018-02-17	rnd 5	type Rapid	result 0.5
		Opponent Jurrius, Z (Zane)				Opponent Jurrius, Z (Zane)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament NMBCU Trials 1 2019				Tournament NMBCU Trials 1 2019
		date 2019-03-08	rnd 1	type Standard	result 1	date 2019-03-08	rnd 2	type Standard	result 1
		Opponent Odendaal, F (Farrel)				Opponent Rautenbach, J (Johan)
2	2	Tournament NMB Youth Chess Trial 3 2018				Tournament NMB Youth Chess Trial 3 2018
		date 2018-05-12	rnd 5	type Standard	result 1	date 2018-05-12	rnd 6	type Standard	result 1
		Opponent Anthony, S (Skyla)				Opponent Buchner, B (Blake)
3	2	Tournament NMB Second Trials 2018				Tournament NMB Second Trials 2018
		date 2018-04-21	rnd 3	type Standard	result 1	date 2018-04-22	rnd 4	type Standard	result 1
		Opponent Williams, L (Leerah)				Opponent Jacobs, D (Dewan)

#	Games	Start				End
1	2	Tournament NMBCU Trials 1 2019				Tournament NMBCU Trials 1 2019
		date 2019-03-08	rnd 1	type Standard	result 1	date 2019-03-08	rnd 2	type Standard	result 1
		Opponent Odendaal, F (Farrel)				Opponent Rautenbach, J (Johan)
2	2	Tournament NMB Youth Chess Trial 3 2018				Tournament NMB Youth Chess Trial 3 2018
		date 2018-05-12	rnd 5	type Standard	result 1	date 2018-05-12	rnd 6	type Standard	result 1
		Opponent Anthony, S (Skyla)				Opponent Buchner, B (Blake)
3	2	Tournament NMB Second Trials 2018				Tournament NMB Second Trials 2018
		date 2018-04-21	rnd 3	type Standard	result 1	date 2018-04-22	rnd 4	type Standard	result 1
		Opponent Williams, L (Leerah)				Opponent Jacobs, D (Dewan)

#	Games	Start				End
1	1	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 1	type Rapid	result 1
		Opponent Hartley, A (Abigail)				Opponent Hartley, A (Abigail)

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	Brandt ,H (Hannes)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Brandt ,H (Hannes)	3	1226.7	801.7	3	1229.5	801.7	0	0	0	0	0	0
2	Baboo ,MS (Muhammad Saeed)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Baboo ,MS (Muhammad Saeed)	3	1002.8	577.8	3	972.6	577.8	0	0	0	0	0	0
3	Freeman ,N (Nicole)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Freeman ,N (Nicole)	3	1164.7	1023	3	1154.2	1023	0	0	0	0	0	0
4	Healy ,A (Alexander)	3	3	425	3	3	425	0	0	0	0	0	0
4	Healy ,A (Alexander)	3	1018.9	1443.9	3	1017.6	1443.9	0	0	0	0	0	0
5	Jones ,K (Kellen)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
5	Jones ,K (Kellen)	3	1173.4	890.1	3	1170.7	890.1	0	0	0	0	0	0
6	Kritzinger ,L (Lune)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Kritzinger ,L (Lune)	2	1247	822	2	1247.3	822	0	0	0	0	0	0
7	Kruger ,SJ (Sarah Jane)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Kruger ,SJ (Sarah Jane)	2	860.2	435.2	2	860.2	435.2	0	0	0	0	0	0
8	Louis ,C (Caitlyn)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Louis ,C (Caitlyn)	2	1010	585	2	1003.2	585	0	0	0	0	0	0
9	Abercrombie ,J (Jasmine)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Abercrombie ,J (Jasmine)	2	967.7	542.7	2	882.8	542.7	0	0	0	0	0	0
10	Kivido ,Z (Zach)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Kivido ,Z (Zach)	2	1220.2	795.2	2	1214.1	795.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Jonker, A (Adrian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms