Chess South Africa Ratings Database

PLAYER PAGE

Personal

Vlok, J (Jan)

Chess SA id

109089433

FIDE id

Date of birth

2009-02-10 (U18)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1205.5	1191.4	708.6	659
Raw rating	1205.5	1191.4	708.6	659
Weighted rating	1205.5	1191.4	708.6	659
Weighted performance	802.1	796.3	0	0
Floor	709.7	695.4	500	500
K-factor	36	40	40	40
Min/Max rating change allowed	164.5	167.9	333.9	358.4
Highest rating	1209.7 2023-04-01	1200 2024-11-01	1206.8 2018-05-01	1200 2018-02-01
Highest raw rating	1209.7 2023-04-01	1195.4 2023-04-01	708.6 2024-02-01	659 2024-02-01
Highest weighted rating	1209.7 2025-06-01	1195.4 2024-11-01	708.6 2024-11-01	659 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1206.8 2018-05-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1205.5	1191.4	708.6	659
Analysis
Rating	1205.5	1191.4	708.6	659
Raw rating	1205.5	1191.4	708.6	659
Weighted rating	1205.5	1191.4	708.6
Weighted performance	802.1	796.3	0
K-factor	36	40	40	40
Floor	709.7	695.4	500	500
Max/Min rating change allowed	164.5	167.9	333.9	358.4
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	1205.5	1191.4	708.6	659
New weighted rating	1205.5	1191.4	708.6	659
New weighted performance	801.7	795.9	0	0
Temp new rating	1205.5	1191.4	708.6	659
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1205.5	1191.4	708.6	659
New K-factor	36	40	40	40
New floor	709.7	695.4	500	500

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	15	15	0	0
	0	0	0	0
	5	5	0	0
History	179	156	10	13

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Tshwane (GTP)
Province	Gauteng (GT)
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	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	134	67	50	0	1030	1030
Standard	111	55	49.55	-3.8	1004.4	1000.6
Rapid	10	6	60	85	1137.9	1222.9
Blitz	13	6	46.15	-32.7	1165.1	1132.4

Date	Main	Standard	Rapid	Blitz
2025-09-30	1205.5	1191.4	708.6	659
2025-09-01	1205.5	1191.4	708.6	659
2025-08-01	1205.5	1191.4	708.6	659
2025-07-01	1205.5	1191.4	708.6	659
2025-06-01	1205.5	1191.4	708.6	659
2025-05-01	1205.5	1191.4	708.6	659
2025-04-01	1205.5	1191.4	708.6	659
2025-03-01	1205.5	1191.4	708.6	659
2025-02-01	1205.5	1191.4	708.6	659
2025-01-01	1205.5	1191.4	708.6	659
2024-12-01	1205.5	1191.4	708.6	659
2024-11-01	1205.5	1191.4	708.6	659
2024-10-01	1205.5	1191.4	708.6	659
2024-09-01	1205.5	1191.4	708.6	659
2024-08-01	1205.5	1191.4	708.6	659
2024-07-01	1205.5	1191.4	708.6	659
2024-06-01	1205.5	1191.4	708.6	659
2024-08-01	1205.5	1191.4	708.6	659
2024-04-01	1205.5	1191.4	708.6	659
2024-03-01	1205.5	1191.4	708.6	659
2024-02-01	1205.5	1191.4	708.6	659
2024-01-01	1205.5	1191.4	708.6	659
2023-12-01	1205.5	1191.4	708.6	659
2023-11-01	1205.5	1191.4	708.6	659

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	2023 Menlo Open Tournament (C)	2023-07-22	2023-07-22	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2023 Milos Ristic Open Tournament (C)	2023-04-27	2023-04-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	Chris Greyling Open Tournament 2023 (C)	2023-03-21	2023-03-21	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
4	2021 Chris Greyling Open Tournament (C)	2021-05-08	2021-05-08	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
5	2020 Tuks Open (C)	2020-02-22	2020-02-22	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
6	Waterkloof end of Year Blitz 2019	2019-10-17	2019-10-17	Blitz	Chess Excellence (CEX)	6	6	3	Yes	Analysis
7	2019 D4 Tshwane South Schools League Team Finals (U11)	2019-07-27	2019-07-27	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
8	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis
9	2019 D4 Individual Finals (U11 Mixed)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
10	2019 Constantia Park Open (D)	2019-02-09	2019-02-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
11	South African Junior Blitz 2018 (U10)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	7	3	Yes	Analysis
12	South African Junior Team Championships 2018 (U10B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
13	2018 Lardies Ope (D)	2018-10-27	2018-10-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
14	2018 Etienne Lewis Trials (U10 Boys)	2018-08-31	2018-09-02	Standard	Tshwane (GTP)	7	7	4	Yes	Analysis
15	2018 Mid Gauteng Open (D)	2018-08-18	2018-08-18	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
16	2018 Menlo Open Chess Tournament (D)	2018-07-21	2018-07-21	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
17	2018 Super 12 (Junior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis
18	2018 Chris Greyling Open (D)	2018-04-21	2018-04-21	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
19	2018 Capablanca Swiss (D)	2018-04-27	2018-04-27	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
20	2018 Waterkloof Open (D)	2018-03-03	2018-03-04	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
21	2018 D4 Tshwane North Individual Chess Championships (U9 Boys)	2018-03-10	2018-03-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
22	2018 Crawford Open (D)	2018-03-24	2018-03-24	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
23	2018 Blou Bul Open (D)	2018-02-17	2018-02-17	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
24	2018 Tshwane Registration Open Chess Tournament (E)	2018-01-27	2018-01-27	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
25	South African Junior Team Championships 2017 (U10C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2021 Chris Greyling Open Tournament				Tournament Chris Greyling Open Tournament 2023
		date 2021-05-08	rnd 5	type Standard	result 1	date 2023-03-21	rnd 4	type Standard	result 1
		Opponent De Waal, N (Nadine)				Opponent Bath, X (Xavier)
2	4	Tournament 2023 Milos Ristic Open Tournament				Tournament 2023 Menlo Open Tournament
		date 2023-04-27	rnd 4	type Standard	result 1	date 2023-07-22	rnd 2	type Standard	result 1
		Opponent Pillay, Y (Yishai)				Opponent Minny, O (Oban)
3	4	Tournament 2018 Mid Gauteng Open				Tournament 2018 Mid Gauteng Open
		date 2018-08-18	rnd 2	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 0.5
		Opponent Lourens, J (Jurgen)				Opponent Behr, S (Stesha)

#	Games	Start				End
1	5	Tournament 2021 Chris Greyling Open Tournament				Tournament Chris Greyling Open Tournament 2023
		date 2021-05-08	rnd 5	type Standard	result 1	date 2023-03-21	rnd 4	type Standard	result 1
		Opponent De Waal, N (Nadine)				Opponent Bath, X (Xavier)
2	4	Tournament 2023 Milos Ristic Open Tournament				Tournament 2023 Menlo Open Tournament
		date 2023-04-27	rnd 4	type Standard	result 1	date 2023-07-22	rnd 2	type Standard	result 1
		Opponent Pillay, Y (Yishai)				Opponent Minny, O (Oban)
3	4	Tournament 2018 Mid Gauteng Open				Tournament 2018 Mid Gauteng Open
		date 2018-08-18	rnd 2	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 0.5
		Opponent Lourens, J (Jurgen)				Opponent Behr, S (Stesha)

#	Games	Start				End
1	4	Tournament 2018 Super 12				Tournament 2019 Super 12 Laerskole
		date 2018-05-05	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 3	type Rapid	result 1
		Opponent Du Randt, JC (Jean)				Opponent Muller, J (Jonathan)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 3	type Rapid	result 1
		Opponent Van Der Bank, C (Chantal)				Opponent Van Der Bank, C (Chantal)
3	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Roets, D (Denicke)				Opponent Roets, D (Denicke)

#	Games	Start				End
1	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 6	type Blitz	result 1	date 2019-10-17	rnd 6	type Blitz	result 1
		Opponent Niehaus, SJ (Samuel)				Opponent Niehaus, SJ (Samuel)
2	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 4	type Blitz	result 1	date 2019-10-17	rnd 4	type Blitz	result 1
		Opponent Geldenhuys, H (Heinrich)				Opponent Geldenhuys, H (Heinrich)
3	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 2	type Blitz	result 1	date 2019-10-17	rnd 2	type Blitz	result 1
		Opponent Cronje, L (Lucas)				Opponent Cronje, L (Lucas)

#	Games	Start				End
1	5	Tournament 2021 Chris Greyling Open Tournament				Tournament Chris Greyling Open Tournament 2023
		date 2021-05-08	rnd 5	type Standard	result 1	date 2023-03-21	rnd 4	type Standard	result 1
		Opponent De Waal, N (Nadine)				Opponent Bath, X (Xavier)
2	3	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament 2019 D4 Tshwane South Schools League Team Finals
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Meissner, F (Friedrich)				Opponent Smith, LM (Luhane)
3	3	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 1	type Rapid	result 1	date 2019-05-04	rnd 3	type Rapid	result 1
		Opponent Jerling, J (Jordan)				Opponent Muller, J (Jonathan)

#	Games	Start				End
1	5	Tournament 2021 Chris Greyling Open Tournament				Tournament Chris Greyling Open Tournament 2023
		date 2021-05-08	rnd 5	type Standard	result 1	date 2023-03-21	rnd 4	type Standard	result 1
		Opponent De Waal, N (Nadine)				Opponent Bath, X (Xavier)
2	4	Tournament 2018 Capablanca Swiss				Tournament 2018 Menlo Open Chess Tournament
		date 2018-04-27	rnd 4	type Standard	result 1	date 2018-07-21	rnd 2	type Standard	result 1
		Opponent Nayagar, Y (Yashiel)				Opponent Smith, LM (Luhane)
3	3	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament 2019 D4 Tshwane South Schools League Team Finals
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Meissner, F (Friedrich)				Opponent Smith, LM (Luhane)

#	Games	Start				End
1	4	Tournament 2018 Super 12				Tournament 2019 Super 12 Laerskole
		date 2018-05-05	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 3	type Rapid	result 1
		Opponent Du Randt, JC (Jean)				Opponent Muller, J (Jonathan)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 3	type Rapid	result 1
		Opponent Van Der Bank, C (Chantal)				Opponent Van Der Bank, C (Chantal)
3	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Roets, D (Denicke)				Opponent Roets, D (Denicke)

#	Games	Start				End
1	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 6	type Blitz	result 1	date 2019-10-17	rnd 6	type Blitz	result 1
		Opponent Niehaus, SJ (Samuel)				Opponent Niehaus, SJ (Samuel)
2	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 4	type Blitz	result 1	date 2019-10-17	rnd 4	type Blitz	result 1
		Opponent Geldenhuys, H (Heinrich)				Opponent Geldenhuys, H (Heinrich)
3	1	Tournament Waterkloof end of Year Blitz 2019				Tournament Waterkloof end of Year Blitz 2019
		date 2019-10-17	rnd 2	type Blitz	result 1	date 2019-10-17	rnd 2	type Blitz	result 1
		Opponent Cronje, L (Lucas)				Opponent Cronje, L (Lucas)

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	Mostert ,M (Mj)	3	3	425	3	3	425	0	0	0	0	0	0
1	Mostert ,M (Mj)	3	804.3	1229.3	3	792.7	1229.3	0	0	0	0	0	0
2	Gerber ,J (Juandre)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Gerber ,J (Juandre)	2	1088.6	663.6	2	1074.5	663.6	0	0	0	0	0	0
3	Van Rooyen ,M (Marcel)	2	2	425	2	2	425	0	0	0	0	0	0
3	Van Rooyen ,M (Marcel)	2	738.7	1163.7	2	729.9	1163.7	0	0	0	0	0	0
4	Roetz ,K (Kyle)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Roetz ,K (Kyle)	2	1136.5	711.5	2	1125.5	711.5	0	0	0	0	0	0
5	Rudolph ,N (Nathan)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Rudolph ,N (Nathan)	2	1213.9	788.9	2	1205.8	788.9	0	0	0	0	0	0
6	Smith ,LM (Luhane Mari)	2	2	425	2	2	425	0	0	0	0	0	0
6	Smith ,LM (Luhane Mari)	2	1070.4	1495.4	2	1062.2	1495.4	0	0	0	0	0	0
7	Smith ,KJ (Kayle Jean)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Smith ,KJ (Kayle Jean)	2	820	1032.5	2	824	1032.5	0	0	0	0	0	0
8	De Jager ,J (Jacques)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	De Jager ,J (Jacques)	2	746	321	2	746.9	321	0	0	0	0	0	0
9	De Waal ,N (Nadine)	1	1	425	1	1	425	0	0	0	0	0	0
9	De Waal ,N (Nadine)	1	1404.7	1829.7	1	1389.6	1829.7	0	0	0	0	0	0
10	Malunga ,L (Lebone)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Malunga ,L (Lebone)	1	793.7	368.7	1	794	368.7	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

Vlok, J (Jan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms