Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Zyl, J (Jayson)

Chess SA id

1790147427

FIDE id

Date of birth

1979-10-16 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1336	1334.1	1300	1242
Raw rating	1336	1334.1	1300	1239
Weighted rating	1332.8	1333.5	1299	1242
Weighted performance	1096.3	0	0	1065.1
Floor	840.4	834.1	800	795.2
K-factor	36	36	36	36
Min/Max rating change allowed	136.6	137	143.8	156.8
Highest rating	1341.2 2024-07-01	1500.2 2023-11-01	1300 2024-02-01	1295.2 2024-08-01
Highest raw rating	1340.4 2024-08-01	1334.1 2024-02-01	1300 2024-02-01	1295.2 2024-08-01
Highest weighted rating	1329.8 2025-08-01	1331.2 2025-08-01	1296.7 2025-08-01	1295.2 2025-05-05
Highest weighted performance	1341.2 2024-07-01	1500.2 2023-11-01	0 2025-01-01	1314.4 2025-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0.9
New rating	1336	1334.1	1300	1242.9
Analysis
Rating	1336	1334.1	1300	1242
Raw rating	1336	1334.1	1300	1239
Weighted rating	1332.8	1333.5	1299
Weighted performance	1096.3	0	0
K-factor	36	36	36	36
Floor	840.4	834.1	800	795.2
Max/Min rating change allowed	136.6	137	143.8	156.8
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	1336	1334.1	1300	1239
New weighted rating	1333.7	1333.9	1299.7	1242.9
New weighted performance	1095.9	0	0	1064.7
Temp new rating	1336	1334.1	1300	1242.9
Temp new rating +/-	0	0	0	0.9
Final new rating +/-	0	0	0	0.9
New rating	1336	1334.1	1300	1242.9
New K-factor	36	36	36	36
New floor	840.4	834.1	800	795.2

Item	Main	Standard	Blitz
	0	0	0
	8	0	8
	38	0	38
	21	5	16
	6	0	6
	0	0	0
History	73	5	68

Games since
	Main 51	Standard 5		Rapid 0		Blitz 46
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2820		905		251
Male	2265		678		189
Adult	558		156		39
Adult Male	514		140		37
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	378		146		57
Male	352		139		55
Adult	230		92		37
Adult Male	222		89		36


	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	8	2	25	-212.5	1551.8	1339.3
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	8	2	25	-212.5	1551.8	1339.3
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	73	38.5	52.74	23.3	1370.2	1393.5
Standard	5	3.5	70	170	1312.6	1482.6
Rapid	0	0	0	0	0	0
Blitz	68	35	51.47	12.5	1374.4	1386.9

Date	Main	Standard	Rapid	Blitz
2025-09-30	1336	1334.1	1300	1239
2025-09-01	1336	1334.1	1300	1239
2025-08-01	1336	1334.1	1300	1239
2025-07-01	1336	1334.1	1300	1237
2025-06-01	1336	1334.1	1300	1232.2
2025-05-01	1336.1	1334.1	1300	1250.2
2025-04-01	1336.1	1334.1	1300	1250.2
2025-03-01	1336.1	1334.1	1300	1250.2
2025-02-01	1336.1	1334.1	1300	1250.2
2025-01-01	1336.1	1334.1	1300	1250.2
2024-12-01	1336.1	1334.1	1300	1250.2
2024-11-01	1336.1	1334.1	1300	1250.2
2024-10-01	1339.8	1334.1	1300	1292.3
2024-09-01	1340.4	1334.1	1300	1295.2
2024-08-01	1340.4	1334.1	1300	1295.2
2024-07-01	1322.6	1334.1	1300	1240.5
2024-06-01	1322.6	1334.1	1300	1240.5
2024-08-01	1308.5	1334.1	1300	1154.1
2024-04-01	1308.5	1334.1	1300	1173.6
2024-03-01	1308.5	1334.1	1300	1173.6
2024-02-01	1308.5	1334.1	1300	1173.6
2024-01-01	1308.5	1334.1	1300	1173.6
2023-12-01	1268.6	1267.6	1200	1151.1
2023-11-01	1268.6	1267.6	1200	1151.1

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	InterClub Blitz 2 2025	2025-05-08	2025-05-08	Blitz	Eden (WEG)	10	8	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	InterClub Blitz 2 2025	2025-05-08	2025-05-08	Blitz	Eden (WEG)	10	8	2	Yes	Analysis
2	InterClub Blitz 5 2024	2024-10-07	2024-10-07	Blitz	Eden (WEG)	6	6	1	Yes	Analysis
3	InterClub Blitz 4 2024	2024-09-04	2024-09-04	Blitz	Eden (WEG)	10	8	4	Yes	Analysis
4	InterClub Blitz 3 Open 2024	2024-07-18	2024-07-18	Blitz	Eden (WEG)	10	8	6	Yes	Analysis
5	InterClub Blitz 2 2024	2024-05-16	2024-05-16	Blitz	Eden (WEG)	10	8	5.5	Yes	Analysis
6	InterClub Blitz 1 2024	2024-04-17	2024-04-17	Blitz	Eden (WEG)	10	8	4	Yes	Analysis
7	Eden Chess Union League 2023 (Premier Division)	2023-11-11	2023-11-11	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
8	InterClub Blitz 3 2023	2023-07-20	2023-07-20	Blitz	Eden (WEG)	10	8	5.5	Yes	Analysis
9	Inter Club Blitz 2 2023 (Open)	2023-06-21	2023-06-21	Blitz	Eden (WEG)	10	8	2	Yes	Analysis
10	Interclub Blitz Evening (Mossel Bay)	2022-10-26	2022-10-26	Blitz	Eden (WEG)	6	6	5	Yes	Analysis

#	Games	Start				End
1	8	Tournament InterClub Blitz 3 2023				Tournament Eden Chess Union League 2023
		date 2023-07-20	rnd 5	type Blitz	result 1	date 2023-11-11	rnd 4	type Standard	result 1
		Opponent Oktober, J (Jayson)				Opponent Winster, W (Wayne)
2	4	Tournament InterClub Blitz 4 2024				Tournament InterClub Blitz 4 2024
		date 2024-09-04	rnd 3	type Blitz	result 1	date 2024-09-04	rnd 8	type Blitz	result 0.5
		Opponent Swart, S (Sune)				Opponent Jantjies, K (Keaton)
3	4	Tournament InterClub Blitz 3 Open 2024				Tournament InterClub Blitz 4 2024
		date 2024-07-18	rnd 8	type Blitz	result 1	date 2024-09-04	rnd 1	type Blitz	result 1
		Opponent Cloete, R (Ralph)				Opponent Daniels, R (Reuben)

#	Games	Start				End
1	4	Tournament Eden Chess Union League 2023				Tournament Eden Chess Union League 2023
		date 2023-11-11	rnd 1	type Standard	result 1	date 2023-11-11	rnd 4	type Standard	result 1
		Opponent Raubenheimer, M (Michael)				Opponent Winster, W (Wayne)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament InterClub Blitz 3 2023				Tournament InterClub Blitz 1 2024
		date 2023-07-20	rnd 5	type Blitz	result 1	date 2024-04-17	rnd 4	type Blitz	result 1
		Opponent Oktober, J (Jayson)				Opponent Jansen, G (Giovante)
2	4	Tournament InterClub Blitz 4 2024				Tournament InterClub Blitz 4 2024
		date 2024-09-04	rnd 3	type Blitz	result 1	date 2024-09-04	rnd 8	type Blitz	result 0.5
		Opponent Swart, S (Sune)				Opponent Jantjies, K (Keaton)
3	4	Tournament InterClub Blitz 3 Open 2024				Tournament InterClub Blitz 4 2024
		date 2024-07-18	rnd 8	type Blitz	result 1	date 2024-09-04	rnd 1	type Blitz	result 1
		Opponent Cloete, R (Ralph)				Opponent Daniels, R (Reuben)

#	Games	Start				End
1	4	Tournament InterClub Blitz 3 Open 2024				Tournament InterClub Blitz 4 2024
		date 2024-07-18	rnd 8	type Blitz	result 1	date 2024-09-04	rnd 1	type Blitz	result 1
		Opponent Cloete, R (Ralph)				Opponent Daniels, R (Reuben)
2	4	Tournament InterClub Blitz 2 2024				Tournament InterClub Blitz 2 2024
		date 2024-05-16	rnd 3	type Blitz	result 1	date 2024-05-16	rnd 6	type Blitz	result 1
		Opponent Da Silva, D (Darren)				Opponent Hanabe, V (Victory)
3	4	Tournament Interclub Blitz Evening				Tournament Inter Club Blitz 2 2023
		date 2022-10-26	rnd 5	type Blitz	result 1	date 2023-06-21	rnd 3	type Blitz	result 1
		Opponent Kiewiets, M (Morne)				Opponent Jafta, S (Shaunley)

#	Games	Start				End
1	2	Tournament Eden Chess Union League 2023				Tournament Eden Chess Union League 2023
		date 2023-11-11	rnd 1	type Standard	result 1	date 2023-11-11	rnd 2	type Standard	result 1
		Opponent Raubenheimer, M (Michael)				Opponent Williams, I (Igor)
2	1	Tournament Eden Chess Union League 2023				Tournament Eden Chess Union League 2023
		date 2023-11-11	rnd 4	type Standard	result 1	date 2023-11-11	rnd 4	type Standard	result 1
		Opponent Winster, W (Wayne)				Opponent Winster, W (Wayne)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament InterClub Blitz 3 Open 2024				Tournament InterClub Blitz 4 2024
		date 2024-07-18	rnd 8	type Blitz	result 1	date 2024-09-04	rnd 1	type Blitz	result 1
		Opponent Cloete, R (Ralph)				Opponent Daniels, R (Reuben)
2	4	Tournament InterClub Blitz 2 2024				Tournament InterClub Blitz 2 2024
		date 2024-05-16	rnd 3	type Blitz	result 1	date 2024-05-16	rnd 6	type Blitz	result 1
		Opponent Da Silva, D (Darren)				Opponent Hanabe, V (Victory)
3	4	Tournament Interclub Blitz Evening				Tournament Inter Club Blitz 2 2023
		date 2022-10-26	rnd 5	type Blitz	result 1	date 2023-06-21	rnd 3	type Blitz	result 1
		Opponent Kiewiets, M (Morne)				Opponent Jafta, S (Shaunley)

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	Oktober ,J (Jayson)	6	5	283.3	0	0	0	0	0	0	6	5	283.3
1	Oktober ,J (Jayson)	6	1284.5	1567.9	0	0	0	0	0	0	6	957.7	1567.9
2	Claassen ,M (Maurice)	6	2	-141.7	0	0	0	0	0	0	6	2	-141.7
2	Claassen ,M (Maurice)	6	1401.3	1259.6	0	0	0	0	0	0	6	1259	1259.6
3	Michaels ,A (Antonio)	4	2.5	106.2	0	0	0	0	0	0	4	2.5	106.2
3	Michaels ,A (Antonio)	4	1421.3	1527.6	0	0	0	0	0	0	4	1190	1527.6
4	Hone ,R (Ryan)	4	0	-425	0	0	0	0	0	0	4	0	-425
4	Hone ,R (Ryan)	4	1699.8	1274.8	0	0	0	0	0	0	4	1386.1	1274.8
5	Jansen ,G (Giovante)	4	4	425	0	0	0	0	0	0	4	4	425
5	Jansen ,G (Giovante)	4	1153.2	1578.2	0	0	0	0	0	0	4	766.8	1578.2
6	Daniels ,R (Reuben)	4	1	-212.5	0	0	0	0	0	0	4	1	-212.5
6	Daniels ,R (Reuben)	4	1588.2	1375.8	0	0	0	0	0	0	4	1716.7	1375.8
7	Cloete ,R (Ralph)	3	1	-141.7	1	0	-425	0	0	0	2	1	0
7	Cloete ,R (Ralph)	3	1504.7	1363	1	1507.1	1079.7	0	0	0	2	1212.1	1504.7
8	Matthee ,M (Morne)	2	1	0	0	0	0	0	0	0	2	1	0
8	Matthee ,M (Morne)	2	1485.5	1485.5	0	0	0	0	0	0	2	1328.3	1485.5
9	Swart ,S (Sune)	2	2	425	0	0	0	0	0	0	2	2	425
9	Swart ,S (Sune)	2	1470.5	1895.5	0	0	0	0	0	0	2	1398.6	1895.5
10	Van Der Ross ,M (Marcque)	2	0	-425	0	0	0	0	0	0	2	0	-425
10	Van Der Ross ,M (Marcque)	2	1051	626	0	0	0	0	0	0	2	770.8	626

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Zyl, J (Jayson)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms