Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Jager, Z (Zander)

Chess SA id

1120311079

FIDE id

Date of birth

2012-04-10 (U14)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-21

Personal details last changed

2025-07-17

Junior GPX Games

Junior GPX Points

1459.3

Item	Main	Standard	Rapid	Blitz
Rating	1627.2	1612.9	1200	1200
Raw rating	1627.2	1612.9	1200	1200
Weighted rating	1357.9	1352.9	1200	1200
Weighted performance	1539.7	1520.9	0	0
Floor	1127.2	1112.9	700	700
K-factor	28	28	36	36
Min/Max rating change allowed	90.2	92.1	165.8	165.8
Highest rating	1627.2 2025-09-30	1612.9 2025-09-30	1200 2024-09-01	1200 2024-09-01
Highest raw rating	1627.2 2025-09-30	1612.9 2025-09-30	1200 2024-09-01	1200 2024-09-01
Highest weighted rating	1532 2024-10-01	1527.1 2024-10-01	1200 2024-09-01	1200 2024-09-01
Highest weighted performance	1552.9 2025-08-01	1549.1 2024-09-01	1200 2024-09-01	1200 2024-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1627.2	1612.9	1200	1200
Analysis
Rating	1627.2	1612.9	1200	1200
Raw rating	1627.2	1612.9	1200	1200
Weighted rating	1357.9	1352.9	1200
Weighted performance	1539.7	1520.9	0
K-factor	28	28	36	36
Floor	1127.2	1112.9	700	700
Max/Min rating change allowed	90.2	92.1	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	1627.2	1612.9	1200	1200
New weighted rating	1384.4	1378.6	1200	1200
New weighted performance	1539.2	1520.4	0	0
Temp new rating	1627.2	1612.9	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1627.2	1612.9	1200	1200
New K-factor	28	28	36	36
New floor	1127.2	1112.9	700	700

Item	Main	Standard
	0	0
	57	57
	34	34
	0	0
	0	0
	0	0
History	91	91

Games since
	Main 91	Standard 91		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	526		201		22
Male	487		187		21
U14	52		11		1
U14 Male	47		11		1
Standard
	RSA		Province		Region
Overall	563		222		24
Male	519		205		22
U14	64		20		2
U14 Male	56		18		1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	57	39	68.42	156.6	1406.4	1563
Standard	57	39	68.42	156.6	1406.4	1563
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	91	54.5	59.89	84.1	1367	1451
Standard	91	54.5	59.89	84.1	1367	1451
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1627.2	1612.9	1200	1200
2025-09-01	1522.4	1505.6	1200	1200
2025-08-01	1552.9	1549.1	1200	1200
2025-07-01	1532	1527.1	1200	1200
2025-06-01	1466.6	1458.1	1200	1200
2025-05-01	1316.2	1309.9	1200	1200
2025-04-01	1312.8	1308.4	1200	1200
2025-03-01	1296.3	1291.1	1200	1200
2025-02-01	1296.3	1291.1	1200	1200
2025-01-01	1254.6	1250.3	1200	1200
2024-12-01	1232.6	1234.1	1200	1200
2024-11-01	1232.6	1234.1	1200	1200
2024-10-01	1242.5	1242.4	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	1200

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	Ekurhuleni Trial 4 2025 (E)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
3	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
4	Chess Power House Aug Open 2025 (B)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
5	Ekurhuleni Trials 2025 (E)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	4.5	Yes	Analysis
6	South African Open 2025 (U14 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
7	Ekurhuleni Trial 2 2025 (E)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
8	Ekurhuleni Trials 2025 (E)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	4.5	Yes	Analysis
9	South African Junior Closed Chess Championships 2025 (U14 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2	Yes	Analysis
10	East Rand Chess Club Open 2025 (C)	2025-03-01	2025-03-01	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
11	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni Trial 4 2025 (E)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
3	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
4	Chess Power House Aug Open 2025 (B)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
5	Ekurhuleni Trials 2025 (E)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	4.5	Yes	Analysis
6	South African Open 2025 (U14 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
7	Ekurhuleni Trial 2 2025 (E)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
8	Ekurhuleni Trials 2025 (E)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	4.5	Yes	Analysis
9	South African Junior Closed Chess Championships 2025 (U14 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2	Yes	Analysis
10	East Rand Chess Club Open 2025 (C)	2025-03-01	2025-03-01	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
11	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
12	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Combined)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	3	Yes	Analysis
13	CPH Boksburg Open 2024 (C)	2024-10-26	2024-10-26	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
14	2024 Tshwane Chess Club Clash (Open)	2024-10-12	2024-10-12	Standard	Tshwane (GTP)	5	4	1.5	Yes	Analysis
15	2024 Gauteng North Open Chess Tournament (B)	2024-10-05	2024-10-06	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
16	Knight Riders Spring Chess Tournament 2024 (C)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
17	Kings Gambit Chess Open 14 Sept 2024 (C)	2024-09-14	2024-09-14	Standard	Sedibeng (GSV)	5	4	2	Yes	Analysis
18	2024 Curro Hazeldean High Open Chess Tournament (C)	2024-09-07	2024-09-07	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	11	Tournament Ekurhuleni Trials 2025				Tournament Chess Power House Aug Open 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Shah, A (Ayaan Ali)				Opponent Erasmus, L (Luke)
2	9	Tournament South African Junior Closed Chess Championships 2025				Tournament Ekurhuleni Trial 2 2025
		date 2025-04-04	rnd 8	type Standard	result 1	date 2025-06-21	rnd 2	type Standard	result 1
		Opponent Boggenpoel, B (Blake)				Opponent Thipe, L (Lerou)
3	6	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament East Rand Chess Club Open 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Green, A (Amber)				Opponent Laeke, K (Kaleb)

#	Games	Start				End
1	11	Tournament Ekurhuleni Trials 2025				Tournament Chess Power House Aug Open 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Shah, A (Ayaan Ali)				Opponent Erasmus, L (Luke)
2	9	Tournament South African Junior Closed Chess Championships 2025				Tournament Ekurhuleni Trial 2 2025
		date 2025-04-04	rnd 8	type Standard	result 1	date 2025-06-21	rnd 2	type Standard	result 1
		Opponent Boggenpoel, B (Blake)				Opponent Thipe, L (Lerou)
3	6	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament East Rand Chess Club Open 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Green, A (Amber)				Opponent Laeke, K (Kaleb)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament East Rand Chess Club Open 2025				Tournament Chess Power House Aug Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nortje, O (Owen)				Opponent Erasmus, L (Luke)
2	4	Tournament Ekurhuleni Trials 2025				Tournament Ekurhuleni Trials 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Shah, A (Ayaan Ali)				Opponent Senthilkumar, S (Sakalesh)
3	4	Tournament Ekurhuleni Trial 2 2025				Tournament South African Open 2025
		date 2025-06-21	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Pieters, I (Imrich)				Opponent Gemmell, R (Ryan)

#	Games	Start				End
1	6	Tournament East Rand Chess Club Open 2025				Tournament Chess Power House Aug Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nortje, O (Owen)				Opponent Erasmus, L (Luke)
2	4	Tournament Ekurhuleni Trials 2025				Tournament Ekurhuleni Trials 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Shah, A (Ayaan Ali)				Opponent Senthilkumar, S (Sakalesh)
3	4	Tournament Ekurhuleni Trial 2 2025				Tournament South African Open 2025
		date 2025-06-21	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Pieters, I (Imrich)				Opponent Gemmell, R (Ryan)

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	Matamela ,M (Mukovhe)	3	3	425	3	3	425	0	0	0	0	0	0
1	Matamela ,M (Mukovhe)	3	1141.2	1566.2	3	1184.6	1566.2	0	0	0	0	0	0
2	Visagie ,A (Arina)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
2	Visagie ,A (Arina)	3	1483.2	1766.5	3	1453.1	1766.5	0	0	0	0	0	0
3	Gemmell ,R (Ryan)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
3	Gemmell ,R (Ryan)	3	1346.9	1488.6	3	1347	1488.6	0	0	0	0	0	0
4	Mojapelo ,D (Dakalo)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Mojapelo ,D (Dakalo)	2	1594.4	1169.4	2	1616.3	1169.4	0	0	0	0	0	0
5	Maponya ,W (Warona)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Maponya ,W (Warona)	2	1454.7	1242.2	2	1450.1	1242.2	0	0	0	0	0	0
6	Pillay ,J (Joshua)	2	2	425	2	2	425	0	0	0	0	0	0
6	Pillay ,J (Joshua)	2	1408.8	1833.8	2	1368.8	1833.8	0	0	0	0	0	0
7	Maritz ,D (Deegan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
7	Maritz ,D (Deegan)	2	1476.1	1263.6	2	1476.1	1263.6	0	0	0	0	0	0
8	Opperman ,N (Naude)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
8	Opperman ,N (Naude)	2	1445.6	1658.1	2	1450.4	1658.1	0	0	0	0	0	0
9	Kalimashe ,T (Tshireletso)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Kalimashe ,T (Tshireletso)	2	1725.6	1300.6	2	1720.6	1300.6	0	0	0	0	0	0
10	Nortje ,O (Owen)	2	2	425	2	2	425	0	0	0	0	0	0
10	Nortje ,O (Owen)	2	1242.2	1667.2	2	1199.7	1667.2	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

De Jager, Z (Zander)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms