Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Tonder, JA (Jason Alexander)

Chess SA id

1070112678

FIDE id

Date of birth

2007-09-18 (U20)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-08-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1145.3	1159.6	1200	1200
Raw rating	1145.3	1159.6	1200	1200
Weighted rating	1145.3	1159.6	1200	1200
Weighted performance	640.3	642	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	179.3	175.6	165.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	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 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1145.3	1159.6	1200	1200
Analysis
Rating	1145.3	1159.6	1200	1200
Raw rating	1145.3	1159.6	1200	1200
Weighted rating	1145.3	1159.6	1200
Weighted performance	640.3	642	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	179.3	175.6	165.8	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	1145.3	1159.6	1200	1200
New weighted rating	1145.3	1159.6	1200	1200
New weighted performance	658.8	641.6	0	0
Temp new rating	1145.3	1159.6	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1145.3	1159.6	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	14	14
	0	0
History	33	33

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	33	13.5	40.91	-77.3	1100.7	1023.5
Standard	33	13.5	40.91	-77.3	1100.7	1023.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1145.3	1159.6	1200	1200
2025-09-01	1145.3	1159.6	1200	1200
2025-08-01	1145.3	1159.6	1200	1200
2025-07-01	1145.3	1159.6	1200	1200
2025-06-01	1145.3	1159.6	1200	1200
2025-05-01	1145.3	1159.6	1200	1200
2025-04-01	1145.3	1159.6	1200	1200
2025-03-01	1145.3	1159.6	1200	1200
2025-02-01	1145.3	1159.6	1200	1200
2025-01-01	1145.3	1159.6	1200	1200
2024-12-01	1145.3	1159.6	1200	1200
2024-11-01	1145.3	1159.6	1200	1200
2024-10-01	1145.3	1159.6	1200	1200
2024-09-01	1145.3	1159.6	1200	1200
2024-08-01	1145.3	1159.6	1200	1200
2024-07-01	1145.3	1159.6	1200	1200
2024-06-01	1145.3	1159.6	1200	1200
2024-08-01	1145.3	1159.6	1200	1200
2024-04-01	1145.3	1159.6	1200	1200
2024-03-01	1145.3	1159.6	1200	1200
2024-02-01	1145.3	1159.6	1200	1200
2024-01-01	1145.3	1159.6	1200	1200
2023-12-01	1145.3	1159.6	1200	1200
2023-11-01	1145.3	1159.6	1200	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	2022 Gauteng Schools Team Championships (U15 Open)	2022-08-26	2022-08-26	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
2	2022 D3 Cluster Teams (U17)	2022-05-28	2022-05-28	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
3	2022 D3 Cluster Teams (U15 Mixed)	2022-05-28	2022-05-28	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
4	2019 Gauteng School League Finals (U13 Open)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
5	2019 D3 Team League (U13)	2019-07-20	2019-07-20	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	D3 Primary School League Cluster 4 2019 (U13)	2019-05-12	2019-05-12	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
7	2019 D3 Individuals (U13 Boys)	2019-04-13	2019-04-13	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2022 Gauteng Schools Team Championships				Tournament 2022 Gauteng Schools Team Championships
		date 2022-08-26	rnd 2	type Standard	result 1	date 2022-08-26	rnd 5	type Standard	result 0.5
		Opponent Cloete, E (Elizna)				Opponent Mokoena, T (Thato)
2	4	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 2	type Standard	result 1	date 2022-05-28	rnd 5	type Standard	result 1
		Opponent Mokwena, K (Kabelo)				Opponent Badenhorst, C (Christo)
3	1	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-05-28	rnd 3	type Standard	result 1
		Opponent Blessing, M (Malatsho)				Opponent Blessing, M (Malatsho)

#	Games	Start				End
1	4	Tournament 2022 Gauteng Schools Team Championships				Tournament 2022 Gauteng Schools Team Championships
		date 2022-08-26	rnd 2	type Standard	result 1	date 2022-08-26	rnd 5	type Standard	result 0.5
		Opponent Cloete, E (Elizna)				Opponent Mokoena, T (Thato)
2	4	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 2	type Standard	result 1	date 2022-05-28	rnd 5	type Standard	result 1
		Opponent Mokwena, K (Kabelo)				Opponent Badenhorst, C (Christo)
3	1	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-05-28	rnd 3	type Standard	result 1
		Opponent Blessing, M (Malatsho)				Opponent Blessing, M (Malatsho)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 2	type Standard	result 1	date 2022-05-28	rnd 5	type Standard	result 1
		Opponent Mokwena, K (Kabelo)				Opponent Badenhorst, C (Christo)
2	3	Tournament 2022 Gauteng Schools Team Championships				Tournament 2022 Gauteng Schools Team Championships
		date 2022-08-26	rnd 2	type Standard	result 1	date 2022-08-26	rnd 4	type Standard	result 1
		Opponent Cloete, E (Elizna)				Opponent Hlogwane, M (Mpho)
3	1	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-05-28	rnd 3	type Standard	result 1
		Opponent Blessing, M (Malatsho)				Opponent Blessing, M (Malatsho)

#	Games	Start				End
1	4	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 2	type Standard	result 1	date 2022-05-28	rnd 5	type Standard	result 1
		Opponent Mokwena, K (Kabelo)				Opponent Badenhorst, C (Christo)
2	3	Tournament 2022 Gauteng Schools Team Championships				Tournament 2022 Gauteng Schools Team Championships
		date 2022-08-26	rnd 2	type Standard	result 1	date 2022-08-26	rnd 4	type Standard	result 1
		Opponent Cloete, E (Elizna)				Opponent Hlogwane, M (Mpho)
3	1	Tournament 2022 D3 Cluster Teams				Tournament 2022 D3 Cluster Teams
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-05-28	rnd 3	type Standard	result 1
		Opponent Blessing, M (Malatsho)				Opponent Blessing, M (Malatsho)

No games found.

#	Games	Start				End

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	Van Der Merwe ,N (Nicolaas)	2	1	0	2	1	0	0	0	0	0	0	0
1	Van Der Merwe ,N (Nicolaas)	2	602.9	602.9	2	625	602.9	0	0	0	0	0	0
2	Holtz ,PM (Peter Maxwell)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Holtz ,PM (Peter Maxwell)	1	589	164	1	589	164	0	0	0	0	0	0
3	Mostert ,AG (Adriaan Gert)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Mostert ,AG (Adriaan Gert)	1	1666.2	1241.2	1	1649.9	1241.2	0	0	0	0	0	0
4	Cloete ,E (Elizna)	1	1	425	1	1	425	0	0	0	0	0	0
4	Cloete ,E (Elizna)	1	1175.4	1600.4	1	1171.2	1600.4	0	0	0	0	0	0
5	Mashego ,T (Tshepo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mashego ,T (Tshepo)	1	1169.8	744.8	1	1171.6	744.8	0	0	0	0	0	0
6	Thaoge ,K (Kgaugelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Thaoge ,K (Kgaugelo)	1	1134.3	709.3	1	1120.8	709.3	0	0	0	0	0	0
7	Maritz ,E (Evan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Maritz ,E (Evan)	1	890.7	465.7	1	958.8	465.7	0	0	0	0	0	0
8	Pietersen ,KC (Khailum Colito)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Pietersen ,KC (Khailum Colito)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Van Der Westhuizen ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Van Der Westhuizen ,E (Ethan)	1	1137.8	712.8	1	1176.8	712.8	0	0	0	0	0	0
10	Mongale ,GGK (Gomolemo Gratetude Khaya)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mongale ,GGK (Gomolemo Gratetude Khaya)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Van Tonder, JA (Jason Alexander)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms