Chess South Africa Ratings Database

PLAYER PAGE

Personal

Yoko, C (Christopher David)

Chess SA id

1030144946

FIDE id

Date of birth

2003-09-18 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1788.1	1797.1	1200	1375.9
Raw rating	1749.1	1797.1	1200	1369.4
Weighted rating	1617.1	1648.9	1200	1375.9
Weighted performance	1788.1	1791.7	0	1252.1
Floor	1253.3	1297.1	700	926.3
K-factor	28	28	36	32
Min/Max rating change allowed	75.8	70.8	165.8	130.3
Highest rating	1788.1 2025-09-30	1797.1 2025-09-30	1200 2018-10-01	1450.3 2024-08-01
Highest raw rating	1753.3 2025-05-05	1797.1 2025-09-30	1200 2024-02-01	1426.3 2024-09-01
Highest weighted rating	1617.1 2025-09-30	1648.9 2025-09-30	1200 2018-10-01	1369.4 2025-08-01
Highest weighted performance	1788.1 2025-09-30	1796.7 2024-11-01	0 2025-01-01	1488.8 2025-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.6	0	0	2
New rating	1787.5	1797.1	1200	1377.9
Analysis
Rating	1788.1	1797.1	1200	1375.9
Raw rating	1749.1	1797.1	1200	1369.4
Weighted rating	1617.1	1648.9	1200
Weighted performance	1788.1	1791.7	0
K-factor	28	28	36	32
Floor	1253.3	1297.1	700	926.3
Max/Min rating change allowed	75.8	70.8	165.8	130.3
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	1749.1	1797.1	1200	1369.4
New weighted rating	1635.4	1669.4	1200	1377.9
New weighted performance	1787.5	1791.1	0	1251.7
Temp new rating	1787.5	1797.1	1200	1377.9
Temp new rating +/-	-0.6	0	0	2
Final new rating +/-	-0.6	0	0	2
New rating	1787.5	1797.1	1200	1377.9
New K-factor	28	28	36	32
New floor	1253.3	1297.1	700	926.3

Item	Main	Standard	Blitz
	0	0	0
	50	41	9
	89	53	36
	5	5	0
	11	5	6
	0	0	0
History	155	104	51

Games since
	Main 144	Standard 99		Rapid 0		Blitz 45
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	168		73		34
Male	162		71		32
Adult	109		47		20
Adult Male	106		47		20
Standard
	RSA		Province		Region
Overall	156		68		29
Male	150		66		27
Adult	99		42		15
Adult Male	97		42		15
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	209		64		36
Male	201		61		34
Adult	157		50		26
Adult Male	151		48		25


	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	50	29	58	68	1671.1	1739.1
Standard	41	25.5	62.2	103.7	1681.9	1785.6
Rapid	0	0	0	0	0	0
Blitz	9	3.5	38.89	-94.4	1621.6	1527.2
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	155	91	58.71	74	1549.3	1623.3
Standard	104	65	62.5	106.2	1540.4	1646.6
Rapid	0	0	0	0	0	0
Blitz	51	26	50.98	8.3	1567.5	1575.8

Date	Main	Standard	Rapid	Blitz
2025-09-30	1749.1	1797.1	1200	1369.4
2025-09-01	1713.4	1776.7	1200	1369.4
2025-08-01	1698.5	1770.7	1200	1369.4
2025-07-01	1753.3	1796.7	1200	1387.9
2025-06-01	1753.3	1796.7	1200	1387.9
2025-05-01	1753.3	1796.7	1200	1387.9
2025-04-01	1635.5	1674	1200	1387.9
2025-03-01	1587.8	1643.4	1200	1387.9
2025-02-01	1587.8	1643.4	1200	1387.9
2025-01-01	1587.8	1643.4	1200	1387.9
2024-12-01	1639.8	1641.8	1200	1426.3
2024-11-01	1639.8	1641.8	1200	1426.3
2024-10-01	1530.7	1537.5	1200	1426.3
2024-09-01	1551.2	1575.9	1200	1426.3
2024-08-01	1469.2	1432.5	1200	1365.1
2024-07-01	1469.2	1432.5	1200	1365.1
2024-06-01	1463.3	1432.5	1200	1342.4
2024-08-01	1394.5	1370	1200	1342.4
2024-04-01	1282.7	1262.4	1200	1342.4
2024-03-01	1250	1262.4	1200	1197.2
2024-02-01	1250	1262.4	1200	1197.2
2024-01-01	1250	1262.4	1200	1197.2
2023-12-01	1250	1262.4	1200	1197.2
2023-11-01	1250	1262.4	1200	1197.2

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	Tshwane Chess Club Clash 2025 (Open)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Alekhine Open (A)	2025-09-06	2025-09-07	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	Chess Power House Aug Open 2025 (A)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
4	2025 Menlo Open (A)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	South African Open 2025 (B)	2025-06-28	2025-07-05	Standard	Johannesburg Metro (GJM)	11	11	5.5	Yes	Analysis
6	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	3.5	Yes	Analysis
7	2025 Mid Gauteng Open Chess Tournament (A)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
8	AHS Open Chess Tournament 2025 (B)	2025-03-01	2025-03-01	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Tshwane Chess Club Clash 2025 (Open)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Alekhine Open (A)	2025-09-06	2025-09-07	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	Chess Power House Aug Open 2025 (A)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
4	2025 Menlo Open (A)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	South African Open 2025 (B)	2025-06-28	2025-07-05	Standard	Johannesburg Metro (GJM)	11	11	5.5	Yes	Analysis
6	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	3.5	Yes	Analysis
7	2025 Mid Gauteng Open Chess Tournament (A)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
8	AHS Open Chess Tournament 2025 (B)	2025-03-01	2025-03-01	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
9	USSA Chess Championships 2024 (Open)	2024-11-29	2024-12-03	Standard	Tshwane (GTP)	9	9	4.5	Yes	Analysis
10	USSA Chess Championships 2024 (Blitz)	2024-12-01	2024-12-01	Blitz	Tshwane (GTP)	9	9	5	Yes	Analysis
11	Gauteng Inter-Region at UJ 2024 (Adult+Senior)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
12	Laerskool Doringkloof Primary Open Chess Tournament 2024 (A)	2024-10-19	2024-10-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	2024 Tuks Open Chess Tournament (A)	2024-09-28	2024-09-28	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
14	Mzansi Spring Open 2024 (Advanced)	2024-09-07	2024-09-07	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
15	JCC Khelo India 1st Annual Chess Tournament 2024 (B)	2024-08-31	2024-08-31	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
16	2024 Jacaranda Round Robin Open Chess Tournament (C)	2024-08-17	2024-08-17	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
17	2024 Tshwane Chess FIDE RATED Blitz League Championship 3	2024-07-21	2024-07-21	Blitz	Tshwane (GTP)	9	9	5.5	Yes	Analysis
18	2024 Tshwane Chess FIDE RATED Blitz League Championship 1	2024-05-26	2024-05-26	Blitz	Tshwane (GTP)	9	9	5	Yes	Analysis
19	Gauteng Cup 2nd Edition 2024	2024-05-18	2024-05-18	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
20	2024 Mid Gauteng Open Chess Tournament (B)	2024-05-02	2024-05-02	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
21	2024 Silver Lakes Open Chess Tournament (D1)	2024-04-21	2024-04-21	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
22	Wanderers Blitz Tournament 2024	2024-03-23	2024-03-23	Blitz	Johannesburg Metro (GJM)	9	9	5	Yes	Analysis
23	2023 Tuks Open Chess Tournament (C)	2023-10-07	2023-10-07	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
24	UJ Fundraising Tournament 2022 (B)	2022-08-13	2022-08-13	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
25	Chessheroes Bowls Club Zoo Lake Challenge 2022	2022-07-02	2022-07-02	Blitz	Johannesburg Metro (GJM)	7	6	2	Yes	Analysis

#	Games	Start				End
1	9	Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 3				Tournament JCC Khelo India 1st Annual Chess Tournament 2024
		date 2024-07-21	rnd 9	type Blitz	result 1	date 2024-08-31	rnd 3	type Standard	result 1
		Opponent Luchies, M (Maria)				Opponent Memeh, C (Chime)
2	8	Tournament Wanderers Blitz Tournament 2024				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-03-23	rnd 9	type Blitz	result 1	date 2024-05-02	rnd 2	type Standard	result 1
		Opponent Maponya, K (Khutso)				Opponent Feuth, JA (Johannes)
3	6	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament South African Open 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-06-29	rnd 4	type Standard	result 0.5
		Opponent Molobi, G (Gomolemo)				Opponent Ngcongo, M (Minenhle)

#	Games	Start				End
1	11	Tournament 2023 Tuks Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2023-10-07	rnd 2	type Standard	result 1	date 2024-05-02	rnd 2	type Standard	result 1
		Opponent Nkokou, G (Gomolemo)				Opponent Feuth, JA (Johannes)
2	10	Tournament Gauteng Cup 2nd Edition 2024				Tournament JCC Khelo India 1st Annual Chess Tournament 2024
		date 2024-05-18	rnd 4	type Standard	result 1	date 2024-08-31	rnd 3	type Standard	result 1
		Opponent Bokgoshi, L (Lesley)				Opponent Memeh, C (Chime)
3	6	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament South African Open 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-06-29	rnd 4	type Standard	result 0.5
		Opponent Molobi, G (Gomolemo)				Opponent Ngcongo, M (Minenhle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 1				Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 3
		date 2024-05-26	rnd 8	type Blitz	result 1	date 2024-07-21	rnd 4	type Blitz	result 1
		Opponent Lindeque, G (Gabri'Ella)				Opponent Modisaotsile, B (Botlhale)
2	3	Tournament USSA Chess Championships 2024				Tournament USSA Chess Championships 2024
		date 2024-12-01	rnd 6	type Blitz	result 1	date 2024-12-01	rnd 8	type Blitz	result 1
		Opponent Pasaribu, M (Matthew)				Opponent Munenga, I (Isheanesu Dylan)
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 4	type Blitz	result 1	date 2025-07-02	rnd 5	type Blitz	result 0.5
		Opponent Pienaar, LA (Amadeus Leonard)				Opponent Mthunzi, C (Clive)

#	Games	Start				End
1	9	Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 3				Tournament JCC Khelo India 1st Annual Chess Tournament 2024
		date 2024-07-21	rnd 9	type Blitz	result 1	date 2024-08-31	rnd 3	type Standard	result 1
		Opponent Luchies, M (Maria)				Opponent Memeh, C (Chime)
2	8	Tournament Wanderers Blitz Tournament 2024				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-03-23	rnd 9	type Blitz	result 1	date 2024-05-02	rnd 2	type Standard	result 1
		Opponent Maponya, K (Khutso)				Opponent Feuth, JA (Johannes)
3	5	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament South African Open 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-06-29	rnd 3	type Standard	result 1
		Opponent Molobi, G (Gomolemo)				Opponent Chikwava, R (Ronald)

#	Games	Start				End
1	11	Tournament 2023 Tuks Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2023-10-07	rnd 2	type Standard	result 1	date 2024-05-02	rnd 2	type Standard	result 1
		Opponent Nkokou, G (Gomolemo)				Opponent Feuth, JA (Johannes)
2	10	Tournament Gauteng Cup 2nd Edition 2024				Tournament JCC Khelo India 1st Annual Chess Tournament 2024
		date 2024-05-18	rnd 4	type Standard	result 1	date 2024-08-31	rnd 3	type Standard	result 1
		Opponent Bokgoshi, L (Lesley)				Opponent Memeh, C (Chime)
3	5	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament South African Open 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-06-29	rnd 3	type Standard	result 1
		Opponent Molobi, G (Gomolemo)				Opponent Chikwava, R (Ronald)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament USSA Chess Championships 2024				Tournament USSA Chess Championships 2024
		date 2024-12-01	rnd 6	type Blitz	result 1	date 2024-12-01	rnd 8	type Blitz	result 1
		Opponent Pasaribu, M (Matthew)				Opponent Munenga, I (Isheanesu Dylan)
2	3	Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 3				Tournament 2024 Tshwane Chess FIDE RATED Blitz League Championship 3
		date 2024-07-21	rnd 2	type Blitz	result 1	date 2024-07-21	rnd 4	type Blitz	result 1
		Opponent Pieterson, W (Werner)				Opponent Modisaotsile, B (Botlhale)
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 1	type Blitz	result 1	date 2025-07-02	rnd 2	type Blitz	result 1
		Opponent Van Der Schyff, M (Mila-Ne)				Opponent Francis, A (Aaron)

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	Jacobs ,CN (Calvin Nicholas)	4	1	-212.5	2	1	0	0	0	0	2	0	-425
1	Jacobs ,CN (Calvin Nicholas)	4	1963.5	1751	2	1979.6	1963.5	0	0	0	2	1910.2	1538.5
2	Pasaribu ,M (Matthew)	3	1.5	0	2	0.5	-212.5	0	0	0	1	1	425
2	Pasaribu ,M (Matthew)	3	1615.3	1615.3	2	1637.8	1402.8	0	0	0	1	1031.7	2040.3
3	Modisaotsile ,B (Botlhale)	3	2	141.7	1	1	425	0	0	0	2	1	0
3	Modisaotsile ,B (Botlhale)	3	1576.9	1718.6	1	1656.9	2001.9	0	0	0	2	1285.3	1576.9
4	Letsoalo ,PM (Peter Mogatli)	2	1	0	2	1	0	0	0	0	0	0	0
4	Letsoalo ,PM (Peter Mogatli)	2	1706.2	1706.2	2	1713.9	1706.2	0	0	0	0	0	0
5	Sarakusebwa ,S (Shepard)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Sarakusebwa ,S (Shepard)	2	1882.3	2094.8	2	1898.8	2094.8	0	0	0	0	0	0
6	Nene ,TH (Themba Hope)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Nene ,TH (Themba Hope)	2	1868.9	1443.9	2	1874.3	1443.9	0	0	0	0	0	0
7	Gemmell ,Z (Zac)	2	1	0	2	1	0	0	0	0	0	0	0
7	Gemmell ,Z (Zac)	2	1539.8	1539.8	2	1536.1	1539.8	0	0	0	0	0	0
8	Rishworth ,J (Justin)	2	1	0	2	1	0	0	0	0	0	0	0
8	Rishworth ,J (Justin)	2	1546.9	1546.9	2	1543.6	1546.9	0	0	0	0	0	0
9	Thorulsley ,K (Kairaav)	2	2	425	2	2	425	0	0	0	0	0	0
9	Thorulsley ,K (Kairaav)	2	1497.1	1922.1	2	1493.4	1922.1	0	0	0	0	0	0
10	Molobi ,G (Gomolemo)	2	1	0	1	1	425	0	0	0	1	0	-425
10	Molobi ,G (Gomolemo)	2	1836.9	1836.9	1	1859.6	2261.9	0	0	0	1	1104.6	1411.9

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Yoko, C (Christopher David)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms