Chess South Africa Ratings Database

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Personal

Du Plessis, JAK (Jan)

Chess SA id

102007831

FIDE id

Date of birth

2002-09-03 (Adult)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-12-03

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1653.3	1670.6	1481.4	1480.1
Raw rating	1653.3	1670.6	1481.4	1480.1
Weighted rating	1641.6	1656.9	1481.4	1480.1
Weighted performance	1218.4	1224.6	0	0
Floor	1208	1215.6	981.4	1035.8
K-factor	28	28	32	32
Min/Max rating change allowed	86.9	84.8	111	111.3
Highest rating	1737.2 2019-03-01	1734.1 2019-03-01	1481.4 2019-10-01	1571.3 2019-01-01
Highest raw rating	1708 2019-04-01	1715.6 2019-04-01	1481.4 2024-03-01	1535.8 2019-12-01
Highest weighted rating	1708 2020-12-01	1652 2025-08-01	1481.4 2019-10-01	1535.8 2020-01-01
Highest weighted performance	1737.2 2019-03-01	1734.1 2019-03-01	1200 2024-03-01	1571.3 2019-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1653.3	1670.6	1481.4	1480.1
Analysis
Rating	1653.3	1670.6	1481.4	1480.1
Raw rating	1653.3	1670.6	1481.4	1480.1
Weighted rating	1641.6	1656.9	1481.4
Weighted performance	1218.4	1224.6	0
K-factor	28	28	32	32
Floor	1208	1215.6	981.4	1035.8
Max/Min rating change allowed	86.9	84.8	111	111.3
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	1653.3	1670.6	1481.4	1480.1
New weighted rating	1643.2	1659	1481.4	1480.1
New weighted performance	1217.8	1224	0	0
Temp new rating	1653.3	1670.6	1481.4	1480.1
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1653.3	1670.6	1481.4	1480.1
New K-factor	28	28	32	32
New floor	1208	1215.6	981.4	1035.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	9	9	0	0
	9	9	0	0
	16	16	0	0
	0	0	0	0
History	688	640	18	30

Games since
	Main 18	Standard 18		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
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	284	152	53.52	29.9	1526.6	1556.5
Standard	254	137	53.94	33.5	1520.2	1553.6
Rapid	0	0	0	0	0	0
Blitz	30	15	50	0	1581.1	1581.1

Date	Main	Standard	Rapid	Blitz
2025-09-30	1653.3	1670.6	1481.4	1480.1
2025-09-01	1653.3	1670.6	1481.4	1480.1
2025-08-01	1653.3	1670.6	1481.4	1480.1
2025-07-01	1653.3	1670.6	1481.4	1480.1
2025-06-01	1653.3	1670.6	1481.4	1480.1
2025-05-01	1653.3	1670.6	1481.4	1480.1
2025-04-01	1653.3	1670.6	1481.4	1480.1
2025-03-01	1653.3	1670.6	1481.4	1480.1
2025-02-01	1653.3	1670.6	1481.4	1480.1
2025-01-01	1653.3	1670.6	1481.4	1480.1
2024-12-01	1620.3	1632.5	1481.4	1480.1
2024-11-01	1620.3	1632.5	1481.4	1480.1
2024-10-01	1620.3	1632.5	1481.4	1480.1
2024-09-01	1620.3	1632.5	1481.4	1480.1
2024-08-01	1620.3	1632.5	1481.4	1480.1
2024-07-01	1620.3	1632.5	1481.4	1480.1
2024-06-01	1620.3	1632.5	1481.4	1480.1
2024-08-01	1620.3	1632.5	1481.4	1480.1
2024-04-01	1620.3	1632.5	1481.4	1480.1
2024-03-01	1620.3	1632.5	1481.4	1480.1
2024-02-01	1620.3	1632.5	1481.4	1480.1
2024-01-01	1620.3	1632.5	1481.4	1480.1
2023-12-01	1610.9	1607.8	1481.4	1480.1
2023-11-01	1584.3	1584.3	1481.4	1480.1

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	USSA Chess Championships 2024 (Open)	2024-11-29	2024-12-03	Standard	Tshwane (GTP)	9	9	6	Yes	Analysis
2	2023 USSA Championships (Open)	2023-12-04	2023-12-08	Standard	Ethekwini (KED)	9	9	5.5	Yes	Analysis
3	Ussa Chess Championships 2022 (Open)	2022-12-05	2022-12-09	Standard	Frances Baard (NCF)	9	9	6	Yes	Analysis
4	USSA Closed 2022 (Open)	2022-05-13	2022-05-15	Standard	Dr Kenneth Kaunda (NWP)	7	7	3.5	Yes	Analysis
5	2020 Waterkloof Open (A)	2020-02-29	2020-03-01	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	Alberton Chess Club Open 2020 (A)	2020-02-22	2020-02-22	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
7	2019 Inter Region Chess Championships	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
8	2019 South African Juior Blitz Championship (A)	2020-01-05	2020-01-05	Blitz	4 Knights (4K)	7	7	2.5	Yes	Analysis
9	2019 South African Junior Team Championships (U18B)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
10	2019 African Youth Chess Championship	2019-12-16	2019-12-21	Standard	Namibia (NAM)	9	9	4	Yes	Analysis
11	World Youth Chess Championship 2019	2019-10-02	2019-10-12	Standard	India (IND)	11	10	2.5	Yes	Analysis
12	2019 Boksburg Chess Club Round Robin (A)	2019-09-28	2019-09-28	Standard	Ekurhuleni (GE)	5	5	0	Yes	Analysis
13	2019 Gauteng School League Finals (U17 Open)	2019-08-24	2019-08-24	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
14	Bishop Bavin Open 2019 (A)	2019-08-17	2019-08-17	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
15	COMMONWEALTH CHESS CHAMPIONSHIP-2019	2019-07-01	2019-07-07	Standard	India (IND)	7	7	3.5	Yes	Analysis
16	COMMONWEALTH CHESS CHAMPIONSHIP-2019	2019-06-30	2019-07-07	Standard	India (IND)	9	9	3.5	Yes	Analysis
17	Boksburg Chess Club Open 2019 (A)	2019-07-13	2019-07-13	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
18	Ekurhuleni Trials (3)	2019-06-08	2019-06-08	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
19	2019 Gauteng Secondary Schools Individual Chess Championships (U18 Boys)	2019-05-25	2019-05-25	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
20	2019 Waterkloof Open (A)	2019-03-02	2019-03-03	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
21	2019 South African Junior Closed Chess Championship (U18 Open)	2019-03-17	2019-03-22	Standard	Chess South Africa (CSA)	9	9	6	Yes	Analysis
22	2018 AFRICAN AMATEUR CHAMPIONSHIPS BLITZ Open	2019-01-04	2019-01-04	Blitz	Namibia (NAM)	9	9	4	Yes	Analysis
23	2018 AFRICAN AMATEUR CHAMPIONSHIPS	2018-02-01	2019-01-06	Standard	Namibia (NAM)	9	8	4.5	Yes	Analysis
24	Boksburg Open 2019 (A)	2019-01-19	2019-01-19	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
25	South African Junior Blitz 2018 (U18)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	7	5	Yes	Analysis
26	2018 Wild Card Chess Championships (U18 Open)	2018-12-21	2018-12-24	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
27	South African Junior Team Championships 2018 (U18A)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	1	Yes	Analysis
28	Ekurhuleni Grand Prix Open 2018 (A)	2018-09-14	2018-09-15	Standard	Ekurhuleni (GE)	6	6	3.5	Yes	Analysis
29	Ekurhuleni North District Schools Final 2018 (U18)	2018-08-04	2018-08-04	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
30	Commonwealth Chess Championships 2018	2018-06-26	2018-07-01	Standard	India (IND)	7	7	2	Yes	Analysis
31	Witfield Open 2018 (A)	2018-07-21	2018-07-21	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
32	Ekurhuleni Trials 3 2018 (U18+U20)	2018-06-16	2018-06-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
33	2018 Gauteng Secondary Schools Individual Chess Championships (U18 Boys)	2018-05-26	2018-05-26	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
34	Ekurhuleni North Schools Individuals 2018 (U18 Boys)	2018-05-12	2018-05-12	Standard	Ekurhuleni (GE)	5	5	4.5	Yes	Analysis
35	2018 South African Junior Closed Chess Championships (U16 Open)	2018-04-01	2018-04-07	Standard	Chess South Africa (CSA)	11	11	6	Yes	Analysis
36	2018 Waterkloof Open (A)	2018-03-03	2018-03-04	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
37	Human Rights Day Open 2018 (A)	2018-03-21	2018-03-21	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
38	Ekurhuleni Trials 1 2018 (U18+U20)	2018-03-10	2018-03-10	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
39	2018 Piet Robbertse Chess Tournament (B)	2018-02-03	2018-02-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
40	Elspark Open 2018 (A)	2018-02-10	2018-02-10	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
41	Brakpan Open 2018 (A)	2018-02-24	2018-02-24	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
42	South African Inter Regional Championships 2017	2018-01-09	2018-01-12	Standard	4 Knights (4K)	7	5	3	Yes	Analysis
43	South African Junior Blitz 2017 Championships (A)	2018-01-07	2018-01-07	Blitz	4 Knights (4K)	7	7	3.5	Yes	Analysis
44	South African Junior Team Championships 2017 (U16A)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	2.5	Yes	Analysis

#	Games	Start				End
1	12	Tournament 2018 South African Junior Closed Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-04-05	rnd 8	type Standard	result 0.5	date 2018-05-26	rnd 3	type Standard	result 1
		Opponent Felix, E (Ethon)				Opponent Shonge, G (Garnett)
2	7	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament COMMONWEALTH CHESS CHAMPIONSHIP-2019
		date 2019-05-25	rnd 5	type Standard	result 1	date 2019-06-30	rnd 1	type Standard	result 1
		Opponent Asiphe, L (Lobese)				Opponent Bhambure Shantanu
3	7	Tournament 2019 South African Junior Closed Chess Championship				Tournament 2019 Gauteng Secondary Schools Individual Chess Championships
		date 2019-03-19	rnd 6	type Standard	result 1	date 2019-05-25	rnd 3	type Standard	result 1
		Opponent Fibiger, JN (Jethro)				Opponent Malgas, LX (Lunathi Xola)

#	Games	Start				End
1	12	Tournament 2018 South African Junior Closed Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-04-05	rnd 8	type Standard	result 0.5	date 2018-05-26	rnd 3	type Standard	result 1
		Opponent Felix, E (Ethon)				Opponent Shonge, G (Garnett)
2	7	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament COMMONWEALTH CHESS CHAMPIONSHIP-2019
		date 2019-05-25	rnd 5	type Standard	result 1	date 2019-06-30	rnd 1	type Standard	result 1
		Opponent Asiphe, L (Lobese)				Opponent Bhambure Shantanu
3	7	Tournament 2019 South African Junior Closed Chess Championship				Tournament 2019 Gauteng Secondary Schools Individual Chess Championships
		date 2019-03-19	rnd 6	type Standard	result 1	date 2019-05-25	rnd 3	type Standard	result 1
		Opponent Fibiger, JN (Jethro)				Opponent Malgas, LX (Lunathi Xola)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2018
		date 2018-01-07	rnd 5	type Blitz	result 0.5	date 2018-12-19	rnd 2	type Blitz	result 1
		Opponent Zondo, LC (Linda)				Opponent Swart, S (Sune)
2	3	Tournament 2018 AFRICAN AMATEUR CHAMPIONSHIPS BLITZ Open				Tournament 2019 South African Juior Blitz Championship
		date 2019-01-04	rnd 8	type Blitz	result 1	date 2020-01-05	rnd 1	type Blitz	result 1
		Opponent Mwanyangapo Simon				Opponent Fourie, C (Corne)
3	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 6	type Blitz	result 1	date 2018-12-19	rnd 7	type Blitz	result 1
		Opponent Van Der Westhuizen, E (Ettienne)				Opponent Motalaota, T (Tshepo)

#	Games	Start				End
1	7	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament COMMONWEALTH CHESS CHAMPIONSHIP-2019
		date 2019-05-25	rnd 5	type Standard	result 1	date 2019-06-30	rnd 1	type Standard	result 1
		Opponent Asiphe, L (Lobese)				Opponent Bhambure Shantanu
2	5	Tournament Ussa Chess Championships 2022				Tournament Ussa Chess Championships 2022
		date 2022-12-05	rnd 2	type Standard	result 1	date 2022-12-08	rnd 6	type Standard	result 1
		Opponent Neshito, A (Alex)				Opponent Marais, DP (Daniel)
3	5	Tournament 2019 South African Junior Team Championships				Tournament 2019 Inter Region Chess Championships
		date 2020-01-06	rnd 4	type Standard	result 1	date 2020-01-09	rnd 1	type Standard	result 1
		Opponent Msiwa, L (Lerato)				Opponent Agre, SS (Shraddha)

#	Games	Start				End
1	7	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament COMMONWEALTH CHESS CHAMPIONSHIP-2019
		date 2019-05-25	rnd 5	type Standard	result 1	date 2019-06-30	rnd 1	type Standard	result 1
		Opponent Asiphe, L (Lobese)				Opponent Bhambure Shantanu
2	5	Tournament Ussa Chess Championships 2022				Tournament Ussa Chess Championships 2022
		date 2022-12-05	rnd 2	type Standard	result 1	date 2022-12-08	rnd 6	type Standard	result 1
		Opponent Neshito, A (Alex)				Opponent Marais, DP (Daniel)
3	5	Tournament 2019 South African Junior Team Championships				Tournament 2019 Inter Region Chess Championships
		date 2020-01-06	rnd 4	type Standard	result 1	date 2020-01-09	rnd 1	type Standard	result 1
		Opponent Msiwa, L (Lerato)				Opponent Agre, SS (Shraddha)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2018
		date 2018-01-07	rnd 6	type Blitz	result 1	date 2018-12-19	rnd 2	type Blitz	result 1
		Opponent Prinsloo, JJ (Johannes)				Opponent Swart, S (Sune)
2	3	Tournament 2018 AFRICAN AMATEUR CHAMPIONSHIPS BLITZ Open				Tournament 2019 South African Juior Blitz Championship
		date 2019-01-04	rnd 8	type Blitz	result 1	date 2020-01-05	rnd 1	type Blitz	result 1
		Opponent Mwanyangapo Simon				Opponent Fourie, C (Corne)
3	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 6	type Blitz	result 1	date 2018-12-19	rnd 7	type Blitz	result 1
		Opponent Van Der Westhuizen, E (Ettienne)				Opponent Motalaota, T (Tshepo)

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	Smit ,D (Devon)	4	1.5	-106.2	4	1.5	-106.2	0	0	0	0	0	0
1	Smit ,D (Devon)	4	1449.9	1343.7	4	1449.5	1343.7	0	0	0	0	0	0
2	Vorster ,T (Tyrone)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
2	Vorster ,T (Tyrone)	3	1306	1589.4	3	1314.8	1589.4	0	0	0	0	0	0
3	Nyathi ,M (Musa)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
3	Nyathi ,M (Musa)	3	1602.7	1319.3	3	1604.4	1319.3	0	0	0	0	0	0
4	Tshetlo ,T (Tshepo)	3	0	-425	3	0	-425	0	0	0	0	0	0
4	Tshetlo ,T (Tshepo)	3	1813.4	1388.4	3	1822.6	1388.4	0	0	0	0	0	0
5	Khumalo ,KB (Keith Babongile)	3	0	-425	2	0	-425	0	0	0	1	0	-425
5	Khumalo ,KB (Keith Babongile)	3	2005.4	1580.4	2	2004.3	1580.4	0	0	0	1	2071.8	1580.4
6	Mbedza ,R (Richard)	3	0	-425	2	0	-425	0	0	0	1	0	-425
6	Mbedza ,R (Richard)	3	1911.6	1486.6	2	1920.6	1486.6	0	0	0	1	1944.6	1486.6
7	Millard ,C (Chad)	3	0.5	-283.3	2	0.5	-212.5	0	0	0	1	0	-425
7	Millard ,C (Chad)	3	1587.2	1303.8	2	1587.3	1374.7	0	0	0	1	1579.4	1162.2
8	Govender ,S (Shevern)	2	2	425	2	2	425	0	0	0	0	0	0
8	Govender ,S (Shevern)	2	1518.6	1943.6	2	1519.6	1943.6	0	0	0	0	0	0
9	Higgins ,F (Franco)	2	2	425	2	2	425	0	0	0	0	0	0
9	Higgins ,F (Franco)	2	1264	1689	2	1265.2	1689	0	0	0	0	0	0
10	Thabana ,T (Tekano)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Thabana ,T (Tekano)	2	1497.2	1072.2	2	1511.1	1072.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Du Plessis, JAK (Jan)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms