Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, JS (Justin Shadi)

Chess SA id

186005214

FIDE id

Date of birth

1986-10-14 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-28

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1392.7	1358.4	1407.6	1322.6
Raw rating	1392.7	1358.4	1407.6	1322.6
Weighted rating	1374	1358.4	1380.3	1322.6
Weighted performance	1022.8	821.6	0	0
Floor	902.9	912.9	907.6	936.5
K-factor	32	32	32	32
Min/Max rating change allowed	126	132.3	123.4	139.2
Highest rating	1490.7 2018-05-01	1490.7 2018-05-01	1407.6 2025-04-01	1611.7 2018-07-01
Highest raw rating	1402.9 2018-06-01	1412.9 2018-06-01	1407.6 2025-04-01	1436.5 2020-01-01
Highest weighted rating	1402.9 2018-06-01	1412.9 2018-06-01	1373.7 2025-08-01	1436.5 2020-07-01
Highest weighted performance	1490.7 2018-05-01	1490.7 2018-05-01	1200 2024-02-01	1611.7 2018-07-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1392.7	1358.4	1407.6	1322.6
Analysis
Rating	1392.7	1358.4	1407.6	1322.6
Raw rating	1392.7	1358.4	1407.6	1322.6
Weighted rating	1374	1358.4	1380.3
Weighted performance	1022.8	821.6	0
K-factor	32	32	32	32
Floor	902.9	912.9	907.6	936.5
Max/Min rating change allowed	126	132.3	123.4	139.2
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	1392.7	1358.4	1407.6	1322.6
New weighted rating	1376.1	1358.4	1383.4	1322.6
New weighted performance	1022.3	821.1	0	0
Temp new rating	1392.7	1358.4	1407.6	1322.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1392.7	1358.4	1407.6	1322.6
New K-factor	32	32	32	32
New floor	902.9	912.9	907.6	936.5

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	6	0	6	0
	0	0	0	0
	0	0	0	0
	42	32	0	10
	6	6	0	0
History	182	157	6	19

Games since
	Main 6	Standard 0		Rapid 6		Blitz 0
Gender	Male
Age group	Adult
Region	Eden (WEG)
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	6	5	83.33	283.3	1372.3	1655.6
Standard	0	0	0	0	0	0
Rapid	6	5	83.33	283.3	1372.3	1655.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	106	53.5	50.47	4	1380.8	1384.8
Standard	81	40.5	50	0	1361.2	1361.2
Rapid	6	5	83.33	283.3	1372.3	1655.6
Blitz	19	8	42.11	-67.1	1467.1	1400

Date	Main	Standard	Rapid	Blitz
2025-09-30	1392.7	1358.4	1407.6	1322.6
2025-09-01	1392.7	1358.4	1407.6	1322.6
2025-08-01	1392.7	1358.4	1407.6	1322.6
2025-07-01	1392.7	1358.4	1407.6	1322.6
2025-06-01	1392.7	1358.4	1407.6	1322.6
2025-05-01	1392.7	1358.4	1407.6	1322.6
2025-04-01	1392.7	1358.4	1407.6	1322.6
2025-03-01	1356	1358.4	1354.1	1322.6
2025-02-01	1356	1358.4	1354.1	1322.6
2025-01-01	1356	1358.4	1354.1	1322.6
2024-12-01	1356	1358.4	1354.1	1322.6
2024-11-01	1356	1358.4	1354.1	1322.6
2024-10-01	1356	1358.4	1354.1	1322.6
2024-09-01	1356	1358.4	1354.1	1322.6
2024-08-01	1356	1358.4	1354.1	1322.6
2024-07-01	1356	1358.4	1354.1	1322.6
2024-06-01	1356	1358.4	1354.1	1322.6
2024-08-01	1356	1358.4	1354.1	1322.6
2024-04-01	1356	1358.4	1354.1	1322.6
2024-03-01	1356	1358.4	1354.1	1322.6
2024-02-01	1356	1358.4	1354.1	1322.6
2024-01-01	1356	1358.4	1354.1	1322.6
2023-12-01	1356	1358.4	1354.1	1322.6
2023-11-01	1356	1358.4	1354.1	1322.6

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Oudtshoorn Rapid 2025 (Open)	2025-03-28	2025-03-28	Rapid	Eden (WEG)	6	6	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Oudtshoorn Rapid 2025 (Open)	2025-03-28	2025-03-28	Rapid	Eden (WEG)	6	6	5	Yes	Analysis
2	George Open 2022 (A)	2022-12-03	2022-12-03	Standard	Eden (WEG)	5	4	1	Yes	Analysis
3	South African Open 2022 (B)	2022-07-09	2022-07-17	Standard	Cape Town (WCT)	11	11	6	Yes	Analysis
4	South African Open 2022 (Blitz)	2022-07-14	2022-07-14	Blitz	Cape Town (WCT)	10	10	3.5	Yes	Analysis
5	George Open 2022 (A)	2022-06-11	2022-06-11	Standard	Eden (WEG)	5	5	2	Yes	Analysis
6	Steinitz Open 2022 (B)	2022-05-20	2022-05-22	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
7	Eden Open 2022 (A)	2022-04-22	2022-04-24	Standard	Eden (WEG)	6	6	3	Yes	Analysis
8	Western Cape Club Championships 2021 (B)	2021-10-15	2021-10-17	Standard	Eden (WEG)	6	6	3	Yes	Analysis
9	2019 Western Cape Club Championship (A+B)	2019-10-25	2019-10-27	Standard	Overberg (WOS)	6	5	3	Yes	Analysis
10	Pacaltsdorp Open 2019 (A)	2019-08-30	2019-08-31	Standard	Eden (WEG)	6	5	2	Yes	Analysis
11	South African Open 2018 (B)	2018-07-07	2018-07-14	Standard	Mangaung (FMB)	11	11	5.5	Yes	Analysis
12	South African Open 2018 (Blitz)	2018-07-11	2018-07-11	Blitz	Mangaung (FMB)	9	9	4.5	Yes	Analysis
13	Oudtshoorn Open 2018	2018-06-29	2018-06-30	Standard	Eden (WEG)	6	6	2.5	Yes	Analysis
14	King Cars PECC Grand Prix Third Leg 2018	2018-06-22	2018-06-24	Standard	Nelson Mandela Bay (ENM)	6	5	2	Yes	Analysis
15	Pacaltsdorp Chess Club Open 2018 (A)	2018-05-25	2018-05-26	Standard	Eden (WEG)	6	6	4	Yes	Analysis
16	Calitzdorp Ope 2018	2018-05-05	2018-05-05	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 6	type Rapid	result 1
		Opponent Plaatjies, R (Rumark)				Opponent Oliphant, H (Heinrich)
2	4	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-09	rnd 2	type Standard	result 1	date 2022-07-11	rnd 5	type Standard	result 1
		Opponent Gcuze, K (Khanya)				Opponent Van Zyl, B (Bea)
3	4	Tournament Eden Open 2022				Tournament Steinitz Open 2022
		date 2022-04-23	rnd 4	type Standard	result 0.5	date 2022-05-20	rnd 1	type Standard	result 1
		Opponent Jaars, T (Thomas)				Opponent Willenberg, SR (Shaun)

#	Games	Start				End
1	4	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-09	rnd 2	type Standard	result 1	date 2022-07-11	rnd 5	type Standard	result 1
		Opponent Gcuze, K (Khanya)				Opponent Van Zyl, B (Bea)
2	4	Tournament Eden Open 2022				Tournament Steinitz Open 2022
		date 2022-04-23	rnd 4	type Standard	result 0.5	date 2022-05-20	rnd 1	type Standard	result 1
		Opponent Jaars, T (Thomas)				Opponent Willenberg, SR (Shaun)
3	4	Tournament South African Open 2018				Tournament South African Open 2018
		date 2018-07-08	rnd 3	type Standard	result 1	date 2018-07-10	rnd 6	type Standard	result 1
		Opponent Mogongwa, LB (Leonardina)				Opponent Crowther, FF (Filip)

#	Games	Start				End
1	4	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 6	type Rapid	result 1
		Opponent Plaatjies, R (Rumark)				Opponent Oliphant, H (Heinrich)
2	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 1	type Rapid	result 1	date 2025-03-28	rnd 1	type Rapid	result 1
		Opponent Gelderblom, J (Jayden)				Opponent Gelderblom, J (Jayden)

#	Games	Start				End
1	4	Tournament South African Open 2018				Tournament South African Open 2018
		date 2018-07-11	rnd 2	type Blitz	result 1	date 2018-07-11	rnd 5	type Blitz	result 1
		Opponent Landman, J (Johan)				Opponent Mantati, SV (Sebei)
2	2	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 5	type Blitz	result 0.5	date 2022-07-14	rnd 6	type Blitz	result 1
		Opponent Beck, T (Thilo)				Opponent Greeff, R (Reginald)
3	1	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 9	type Blitz	result 1	date 2022-07-14	rnd 9	type Blitz	result 1
		Opponent Fielies, H (Henrique)				Opponent Fielies, H (Henrique)

#	Games	Start				End
1	4	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 6	type Rapid	result 1
		Opponent Plaatjies, R (Rumark)				Opponent Oliphant, H (Heinrich)
2	4	Tournament South African Open 2018				Tournament South African Open 2018
		date 2018-07-11	rnd 2	type Blitz	result 1	date 2018-07-11	rnd 5	type Blitz	result 1
		Opponent Landman, J (Johan)				Opponent Mantati, SV (Sebei)
3	3	Tournament Eden Open 2022				Tournament Steinitz Open 2022
		date 2022-04-24	rnd 5	type Standard	result 1	date 2022-05-20	rnd 1	type Standard	result 1
		Opponent Chaava, A (Aaron)				Opponent Willenberg, SR (Shaun)

#	Games	Start				End
1	3	Tournament Eden Open 2022				Tournament Steinitz Open 2022
		date 2022-04-24	rnd 5	type Standard	result 1	date 2022-05-20	rnd 1	type Standard	result 1
		Opponent Chaava, A (Aaron)				Opponent Willenberg, SR (Shaun)
2	3	Tournament Calitzdorp Ope 2018				Tournament Pacaltsdorp Chess Club Open 2018
		date 2018-05-05	rnd 5	type Standard	result 1	date 2018-05-25	rnd 2	type Standard	result 1
		Opponent Coetsee, W (Wilco)				Opponent Kleinbooi, D (Dudley)
3	2	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-13	rnd 7	type Standard	result 1	date 2022-07-15	rnd 8	type Standard	result 1
		Opponent Oberholzer, E (Ethan)				Opponent Hansrajh, J (Jitrakorn)

#	Games	Start				End
1	4	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 6	type Rapid	result 1
		Opponent Plaatjies, R (Rumark)				Opponent Oliphant, H (Heinrich)
2	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 1	type Rapid	result 1	date 2025-03-28	rnd 1	type Rapid	result 1
		Opponent Gelderblom, J (Jayden)				Opponent Gelderblom, J (Jayden)

#	Games	Start				End
1	4	Tournament South African Open 2018				Tournament South African Open 2018
		date 2018-07-11	rnd 2	type Blitz	result 1	date 2018-07-11	rnd 5	type Blitz	result 1
		Opponent Landman, J (Johan)				Opponent Mantati, SV (Sebei)
2	1	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 9	type Blitz	result 1	date 2022-07-14	rnd 9	type Blitz	result 1
		Opponent Fielies, H (Henrique)				Opponent Fielies, H (Henrique)
3	1	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 6	type Blitz	result 1	date 2022-07-14	rnd 6	type Blitz	result 1
		Opponent Greeff, R (Reginald)				Opponent Greeff, R (Reginald)

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	Jaars ,T (Thomas)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Jaars ,T (Thomas)	3	1365.1	1506.7	3	1384.1	1506.7	0	0	0	0	0	0
2	Samson ,H (Henry)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
2	Samson ,H (Henry)	2	1278.2	1490.7	2	1277.3	1490.7	0	0	0	0	0	0
3	Quirk ,T (Terence)	2	2	425	2	2	425	0	0	0	0	0	0
3	Quirk ,T (Terence)	2	1388.6	1813.6	2	1401.5	1813.6	0	0	0	0	0	0
4	Booys ,LI (Leatin)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Booys ,LI (Leatin)	2	1563.6	1138.6	2	1551.8	1138.6	0	0	0	0	0	0
5	Lawerlot ,GLR (George Lee-Roy)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Lawerlot ,GLR (George Lee-Roy)	2	1691.8	1266.8	2	1694.1	1266.8	0	0	0	0	0	0
6	Swartbooi ,G (Gabriel)	2	1	0	2	1	0	0	0	0	0	0	0
6	Swartbooi ,G (Gabriel)	2	1468.9	1468.9	2	1470.9	1468.9	0	0	0	0	0	0
7	Malgas ,GL (Glenwell Lesley)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Malgas ,GL (Glenwell Lesley)	2	1678	1253	2	1682	1253	0	0	0	0	0	0
8	Campher ,K (Keegan)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Campher ,K (Keegan)	2	1666.5	1241.5	1	1615.1	1241.5	1	1415	1241.5	0	0	0
9	Makaula ,V (Vumankosi)	2	1	0	1	1	425	0	0	0	1	0	-425
9	Makaula ,V (Vumankosi)	2	1324.4	1324.4	1	1339.5	1749.4	0	0	0	1	1162.8	899.4
10	Fielies ,H (Henrique)	2	2	425	1	1	425	0	0	0	1	1	425
10	Fielies ,H (Henrique)	2	1008.3	1433.3	1	984.6	1433.3	0	0	0	1	985.4	1433.3

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetzee, JS (Justin Shadi)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms