Chess South Africa Ratings Database

PLAYER PAGE

Personal

Geyser, J (Johan)

Chess SA id

150010492

FIDE id

Date of birth

1950-12-04 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2024-12-08

Personal details last changed

2025-02-26

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1429.6	1437.5	1732	1732
Raw rating	1427.3	1435.1	1732	1732
Weighted rating	1429.6	1437.5	1726.2	1726.7
Weighted performance	951.1	958.2	0	0
Floor	949.4	958.4	1232	1232
K-factor	32	32	28	28
Min/Max rating change allowed	119.9	118.6	77.7	77.7
Highest rating	1449.4 2024-02-01	1458.4 2024-02-01	1732 2024-02-01	1732 2024-02-01
Highest raw rating	1449.4 2024-02-01	1458.4 2024-02-01	1732 2024-02-01	1732 2024-02-01
Highest weighted rating	1427.3 2025-08-01	1435.1 2025-08-01	1712.7 2025-08-01	1714.3 2025-08-01
Highest weighted performance	1342.7 2020-03-01	1347.1 2020-03-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.3	0.3	0	0
New rating	1429.9	1437.9	1732	1732
Analysis
Rating	1429.6	1437.5	1732	1732
Raw rating	1427.3	1435.1	1732	1732
Weighted rating	1429.6	1437.5	1726.2
Weighted performance	951.1	958.2	0
K-factor	32	32	28	28
Floor	949.4	958.4	1232	1232
Max/Min rating change allowed	119.9	118.6	77.7	77.7
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	1427.3	1435.1	1732	1732
New weighted rating	1429.9	1437.9	1730.1	1730.2
New weighted performance	950.6	957.8	0	0
Temp new rating	1429.9	1437.9	1732	1732
Temp new rating +/-	0.3	0.3	0	0
Final new rating +/-	0.3	0.3	0	0
New rating	1429.9	1437.9	1732	1732
New K-factor	32	32	28	28
New floor	949.4	958.4	1232	1232

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	5	0
	11	11	0
	11	11	0
	4	0	4
History	45	41	4

Games since
	Main 5	Standard 5		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
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	45	9	20	-255	1556.7	1301.7
Standard	41	8	19.51	-259.1	1568.6	1309.4
Rapid	4	1	25	-212.5	1435.2	1222.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1427.3	1435.1	1732	1732
2025-09-01	1427.3	1435.1	1732	1732
2025-08-01	1427.3	1435.1	1732	1732
2025-07-01	1425.5	1433.2	1732	1732
2025-06-01	1423.3	1430.9	1732	1732
2025-05-01	1420.8	1428.3	1732	1732
2025-04-01	1418.1	1425.4	1732	1732
2025-03-01	1415	1422.2	1732	1732
2025-02-01	1411.9	1418.9	1732	1732
2025-01-01	1410.6	1416.8	1732	1732
2024-12-01	1449.4	1458.4	1732	1732
2024-11-01	1449.4	1458.4	1732	1732
2024-10-01	1449.4	1458.4	1732	1732
2024-09-01	1449.4	1458.4	1732	1732
2024-08-01	1449.4	1458.4	1732	1732
2024-07-01	1449.4	1458.4	1732	1732
2024-06-01	1449.4	1458.4	1732	1732
2024-08-01	1449.4	1458.4	1732	1732
2024-04-01	1449.4	1458.4	1732	1732
2024-03-01	1449.4	1458.4	1732	1732
2024-02-01	1449.4	1458.4	1732	1732
2024-01-01	1449.4	1458.4	1732	1732
2023-12-01	1278.8	1278.9	1154	1200
2023-11-01	1278.8	1278.9	1154	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	Gauteng Inter-Region at UJ 2024 (Adult+Senior)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	0.5	Yes	Analysis
2	Mzansi Fide Open 2023 (Advanced)	2023-04-27	2023-05-01	Standard	Johannesburg Metro (GJM)	6	6	1.5	Yes	Analysis
3	JNW Open - Crawford 2023 (A)	2023-03-04	2023-03-04	Standard	Johannesburg Metro (GJM)	5	5	0.5	Yes	Analysis
4	JMC Womens Day 2022 (FIDE Open)	2022-08-06	2022-08-09	Standard	Johannesburg Metro (GJM)	6	6	2.5	Yes	Analysis
5	JMC @ Pinnacle 2022 (Premier)	2022-02-19	2022-02-20	Standard	Johannesburg Metro (GJM)	5	5	0	Yes	Analysis
6	JMC Helpmekaar 2021 (Open)	2021-09-06	2021-09-06	Rapid	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
7	2020 Waterkloof Open (A)	2020-02-29	2020-03-01	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
8	2020 Piet Robbertse (A)	2020-01-31	2020-02-02	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
9	The Joburg Open 2019 (Prestige)	2019-10-12	2019-10-12	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis

#	Games	Start				End
1	3	Tournament JMC Womens Day 2022				Tournament JMC Womens Day 2022
		date 2022-08-06	rnd 2	type Standard	result 0.5	date 2022-08-07	rnd 4	type Standard	result 1
		Opponent Khumalo, E (Ernest)				Opponent Chikwava, R (Ronald)
2	3	Tournament 2020 Waterkloof Open				Tournament 2020 Waterkloof Open
		date 2020-02-29	rnd 2	type Standard	result 0.5	date 2020-03-01	rnd 4	type Standard	result 0.5
		Opponent De Vries, MA (Andrio)				Opponent Gandawa, F (Fortune)
3	2	Tournament JNW Open - Crawford 2023				Tournament Mzansi Fide Open 2023
		date 2023-03-04	rnd 5	type Standard	result 0.5	date 2023-04-27	rnd 1	type Standard	result 0.5
		Opponent Chikwava, R (Ronald)				Opponent Monteiro Correia, M (Maya)

#	Games	Start				End
1	3	Tournament JMC Womens Day 2022				Tournament JMC Womens Day 2022
		date 2022-08-06	rnd 2	type Standard	result 0.5	date 2022-08-07	rnd 4	type Standard	result 1
		Opponent Khumalo, E (Ernest)				Opponent Chikwava, R (Ronald)
2	3	Tournament 2020 Waterkloof Open				Tournament 2020 Waterkloof Open
		date 2020-02-29	rnd 2	type Standard	result 0.5	date 2020-03-01	rnd 4	type Standard	result 0.5
		Opponent De Vries, MA (Andrio)				Opponent Gandawa, F (Fortune)
3	2	Tournament JNW Open - Crawford 2023				Tournament Mzansi Fide Open 2023
		date 2023-03-04	rnd 5	type Standard	result 0.5	date 2023-04-27	rnd 1	type Standard	result 0.5
		Opponent Chikwava, R (Ronald)				Opponent Monteiro Correia, M (Maya)

#	Games	Start				End
1	1	Tournament JMC Helpmekaar 2021				Tournament JMC Helpmekaar 2021
		date 2021-09-06	rnd 1	type Rapid	result 1	date 2021-09-06	rnd 1	type Rapid	result 1
		Opponent Woest, M (Megan)				Opponent Woest, M (Megan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament JMC Womens Day 2022				Tournament JMC Womens Day 2022
		date 2022-08-07	rnd 3	type Standard	result 1	date 2022-08-07	rnd 4	type Standard	result 1
		Opponent Essop, R (Rashied)				Opponent Chikwava, R (Ronald)
2	1	Tournament Mzansi Fide Open 2023				Tournament Mzansi Fide Open 2023
		date 2023-04-28	rnd 3	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Segal, J (Jamie)				Opponent Segal, J (Jamie)
3	1	Tournament JMC Helpmekaar 2021				Tournament JMC Helpmekaar 2021
		date 2021-09-06	rnd 1	type Rapid	result 1	date 2021-09-06	rnd 1	type Rapid	result 1
		Opponent Woest, M (Megan)				Opponent Woest, M (Megan)

#	Games	Start				End
1	2	Tournament JMC Womens Day 2022				Tournament JMC Womens Day 2022
		date 2022-08-07	rnd 3	type Standard	result 1	date 2022-08-07	rnd 4	type Standard	result 1
		Opponent Essop, R (Rashied)				Opponent Chikwava, R (Ronald)
2	1	Tournament Mzansi Fide Open 2023				Tournament Mzansi Fide Open 2023
		date 2023-04-28	rnd 3	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Segal, J (Jamie)				Opponent Segal, J (Jamie)
3	1	Tournament 2020 Piet Robbertse				Tournament 2020 Piet Robbertse
		date 2020-02-02	rnd 5	type Standard	result 1	date 2020-02-02	rnd 5	type Standard	result 1
		Opponent Smit, YH (Yoshua)				Opponent Smit, YH (Yoshua)

#	Games	Start				End
1	1	Tournament JMC Helpmekaar 2021				Tournament JMC Helpmekaar 2021
		date 2021-09-06	rnd 1	type Rapid	result 1	date 2021-09-06	rnd 1	type Rapid	result 1
		Opponent Woest, M (Megan)				Opponent Woest, M (Megan)

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	Chinoruma ,T (Taurai)	3	0	-425	2	0	-425	1	0	-425	0	0	0
1	Chinoruma ,T (Taurai)	3	1813.4	1388.4	2	1886.6	1388.4	1	1674	1388.4	0	0	0
2	Chikwava ,R (Ronald)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
2	Chikwava ,R (Ronald)	2	1540.2	1752.8	2	1549.3	1752.8	0	0	0	0	0	0
3	Potgieter ,E (Edward)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Potgieter ,E (Edward)	2	1446.3	1021.3	2	1445.4	1021.3	0	0	0	0	0	0
4	Felix ,R (Raphael)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Felix ,R (Raphael)	1	1271.2	846.2	1	1320.7	846.2	0	0	0	0	0	0
5	Grobbelaar ,J (Jacqui)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Grobbelaar ,J (Jacqui)	1	1562.7	1562.7	1	1561.1	1562.7	0	0	0	0	0	0
6	Khumalo ,KB (Keith Babongile)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Khumalo ,KB (Keith Babongile)	1	2042.5	1617.5	1	2041.5	1617.5	0	0	0	0	0	0
7	Lekalakala ,R (Rakgoshik)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Lekalakala ,R (Rakgoshik)	1	1673.1	1248.1	1	1679.8	1248.1	0	0	0	0	0	0
8	Segal ,J (Jamie)	1	1	425	1	1	425	0	0	0	0	0	0
8	Segal ,J (Jamie)	1	1511.8	1936.8	1	1506.4	1936.8	0	0	0	0	0	0
9	Mazibuko ,K (Khanya)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mazibuko ,K (Khanya)	1	1908.3	1483.3	1	1913.8	1483.3	0	0	0	0	0	0
10	Bayani ,K (Kuda)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Bayani ,K (Kuda)	1	2022.5	1597.5	1	2026.7	1597.5	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

Geyser, J (Johan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms