Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sierra, C (Cj)

Chess SA id

1090152037

FIDE id

Date of birth

2009-04-06 (U18)

Gender

Male

Region

Ehlanzeni (MEN)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-07-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1305.3	1301	1200	1200
Raw rating	1305.3	1301	1200	1200
Weighted rating	1304.5	1299.8	1200	1200
Weighted performance	1010.4	1005.7	0	0
Floor	833.9	834.9	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	142.7	143.6	165.8	165.8
Highest rating	1425.5 2023-03-01	1426.3 2023-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1333.9 2024-06-01	1334.9 2024-06-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1333.9 2025-07-01	1334.9 2025-05-05	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1425.5 2023-03-01	1426.3 2023-03-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1305.3	1301	1200	1200
Analysis
Rating	1305.3	1301	1200	1200
Raw rating	1305.3	1301	1200	1200
Weighted rating	1304.5	1299.8	1200
Weighted performance	1010.4	1005.7	0
K-factor	36	36	36	36
Floor	833.9	834.9	700	700
Max/Min rating change allowed	142.7	143.6	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	1305.3	1301	1200	1200
New weighted rating	1304.2	1299.5	1200	1200
New weighted performance	1010	1005.3	0	0
Temp new rating	1305.3	1301	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1305.3	1301	1200	1200
New K-factor	36	36	36	36
New floor	833.9	834.9	700	700

Item	Main	Standard
	0	0
	0	0
	10	10
	22	22
	0	0
	0	0
History	32	32

Games since
	Main 10	Standard 10		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Ehlanzeni (MEN)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	32	17.5	54.69	39.8	1281.1	1320.9
Standard	32	17.5	54.69	39.8	1281.1	1320.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1305.3	1301	1200	1200
2025-09-01	1305.3	1301	1200	1200
2025-08-01	1305.3	1301	1200	1200
2025-07-01	1305.3	1301	1200	1200
2025-06-01	1305.3	1301	1200	1200
2025-05-01	1305.1	1301	1200	1200
2025-04-01	1304.9	1301	1200	1200
2025-03-01	1304.4	1300.8	1200	1200
2025-02-01	1303	1299.2	1200	1200
2025-01-01	1290.4	1280.9	1200	1200
2024-12-01	1290.4	1280.9	1200	1200
2024-11-01	1290.4	1280.9	1200	1200
2024-10-01	1290.4	1280.9	1200	1200
2024-09-01	1290.4	1280.9	1200	1200
2024-08-01	1290.4	1280.9	1200	1200
2024-07-01	1333.9	1334.9	1200	1200
2024-06-01	1333.9	1334.9	1200	1200
2024-08-01	1321.2	1321.9	1200	1200
2024-04-01	1321.2	1321.9	1200	1200
2024-03-01	1321.2	1321.9	1200	1200
2024-02-01	1321.2	1321.9	1200	1200
2024-01-01	1321.2	1321.9	1200	1200
2023-12-01	1321.2	1321.9	1200	1200
2023-11-01	1321.2	1321.9	1200	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	2024 Chess Unlimited Invitational (Section 3)	2024-07-06	2024-07-06	Standard	Ehlanzeni (MEN)	5	5	0	Yes	Analysis
2	Curro Chess Tournament 2024 (U16)	2024-05-18	2024-05-18	Standard	Ehlanzeni (MEN)	5	5	3	Yes	Analysis
3	Trac N4 Mbombela Chess Tournament 2023 (U18)	2023-09-09	2023-09-09	Standard	Ehlanzeni (MEN)	5	5	4	Yes	Analysis
4	White River Primary 2023 (U16)	2023-07-21	2023-07-21	Standard	Ehlanzeni (MEN)	5	5	2	Yes	Analysis
5	Robbies 2023 (U16)	2023-05-11	2023-05-11	Standard	Ehlanzeni (MEN)	5	4	3	Yes	Analysis
6	Oikos Chess Tournament 2023 (U20)	2023-03-11	2023-03-11	Standard	Ehlanzeni (MEN)	5	3	2	Yes	Analysis
7	Uplands Chess Tournament 2023 (U16)	2023-02-25	2023-02-25	Standard	Ehlanzeni (MEN)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Oikos Chess Tournament 2023				Tournament Robbies 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Van Heerden, D (Dante)				Opponent Makamo, M (Mihla)
2	4	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Curro Chess Tournament 2024
		date 2023-09-09	rnd 4	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Khoza, N (Ndumiso)				Opponent Mbhokodo, S (Solomon)
3	3	Tournament Uplands Chess Tournament 2023				Tournament Uplands Chess Tournament 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 0.5
		Opponent Venter, I (Isabel)				Opponent Van Heerden, M (Michael)

#	Games	Start				End
1	5	Tournament Oikos Chess Tournament 2023				Tournament Robbies 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Van Heerden, D (Dante)				Opponent Makamo, M (Mihla)
2	4	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Curro Chess Tournament 2024
		date 2023-09-09	rnd 4	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Khoza, N (Ndumiso)				Opponent Mbhokodo, S (Solomon)
3	3	Tournament Uplands Chess Tournament 2023				Tournament Uplands Chess Tournament 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 0.5
		Opponent Venter, I (Isabel)				Opponent Van Heerden, M (Michael)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Oikos Chess Tournament 2023				Tournament Robbies 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Van Heerden, D (Dante)				Opponent Makamo, M (Mihla)
2	4	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Curro Chess Tournament 2024
		date 2023-09-09	rnd 4	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Khoza, N (Ndumiso)				Opponent Mbhokodo, S (Solomon)
3	2	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Trac N4 Mbombela Chess Tournament 2023
		date 2023-09-09	rnd 1	type Standard	result 1	date 2023-09-09	rnd 2	type Standard	result 1
		Opponent Mkhatshwa, N (Nomonde)				Opponent Marakalla, K (Kago)

#	Games	Start				End
1	5	Tournament Oikos Chess Tournament 2023				Tournament Robbies 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Van Heerden, D (Dante)				Opponent Makamo, M (Mihla)
2	4	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Curro Chess Tournament 2024
		date 2023-09-09	rnd 4	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Khoza, N (Ndumiso)				Opponent Mbhokodo, S (Solomon)
3	2	Tournament Trac N4 Mbombela Chess Tournament 2023				Tournament Trac N4 Mbombela Chess Tournament 2023
		date 2023-09-09	rnd 1	type Standard	result 1	date 2023-09-09	rnd 2	type Standard	result 1
		Opponent Mkhatshwa, N (Nomonde)				Opponent Marakalla, K (Kago)

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	Sibiya ,A (Alwande)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Sibiya ,A (Alwande)	3	1260.9	1119.2	3	1265.4	1119.2	0	0	0	0	0	0
2	Van Heerden ,J (Joshua)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Van Heerden ,J (Joshua)	2	1446.4	1021.4	2	1439.6	1021.4	0	0	0	0	0	0
3	Glass ,G (Gift)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Glass ,G (Gift)	2	1612.3	1187.3	2	1599.7	1187.3	0	0	0	0	0	0
4	De Jager ,J (Jonathan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	De Jager ,J (Jonathan)	1	1254	829	1	1200	829	0	0	0	0	0	0
5	Marakalla ,K (Kago)	1	1	425	1	1	425	0	0	0	0	0	0
5	Marakalla ,K (Kago)	1	1250.5	1675.5	1	1259.4	1675.5	0	0	0	0	0	0
6	Van Dyk ,M (Mia)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Van Dyk ,M (Mia)	1	1419.8	994.8	1	1409.2	994.8	0	0	0	0	0	0
7	Khoza ,N (Ndumiso)	1	1	425	1	1	425	0	0	0	0	0	0
7	Khoza ,N (Ndumiso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Gxamza ,K (Khaya)	1	1	425	1	1	425	0	0	0	0	0	0
8	Gxamza ,K (Khaya)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Phathwa ,M (Mvuyelwa)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Phathwa ,M (Mvuyelwa)	1	1242.3	817.3	1	1249.3	817.3	0	0	0	0	0	0
10	Phillips ,E (Eduard)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Phillips ,E (Eduard)	1	1244.8	819.8	1	1253.3	819.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Sierra, C (Cj)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms