Chess South Africa Ratings Database

PLAYER PAGE

Personal

Potts, M (Markwin)

Chess SA id

188030707

FIDE id

Date of birth

1988-11-12 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1161.5	1104.6	1050.2	1008
Raw rating	1160.9	1104.6	1050.2	1008
Weighted rating	1161.5	1103.7	1050.2	1001
Weighted performance	809.1	0	0	0
Floor	676.6	620.8	550.2	574
K-factor	40	40	40	40
Min/Max rating change allowed	175.3	190	205.3	218
Highest rating	1265.1 2022-06-01	1479.3 2021-10-01	1200 2020-01-01	1370.4 2022-05-01
Highest raw rating	1176.6 2023-10-01	1120.8 2022-05-01	1050.2 2024-02-01	1074 2022-06-01
Highest weighted rating	1176.6 2024-11-01	1120.8 2024-11-01	1050.2 2024-11-01	1074 2024-11-01
Highest weighted performance	1265.1 2022-06-01	1479.3 2021-10-01	1200 2020-01-01	1370.4 2022-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0	0	0	0
New rating	1161.5	1104.6	1050.2	1008
Analysis
Rating	1161.5	1104.6	1050.2	1008
Raw rating	1160.9	1104.6	1050.2	1008
Weighted rating	1161.5	1103.7	1050.2
Weighted performance	809.1	0	0
K-factor	40	40	40	40
Floor	676.6	620.8	550.2	574
Max/Min rating change allowed	175.3	190	205.3	218
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	1160.9	1104.6	1050.2	1008
New weighted rating	1161.5	1103.8	1050.2	1001.6
New weighted performance	808.7	0	0	0
Temp new rating	1161.5	1104.6	1050.2	1008
Temp new rating +/-	-0	0	0	0
Final new rating +/-	-0	0	0	0
New rating	1161.5	1104.6	1050.2	1008
New K-factor	40	40	40	40
New floor	676.6	620.8	550.2	574

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	7	0	0	7
	0	0	0	0
	13	1	4	8
	19	6	0	13
	12	5	7	0
History	55	14	11	30

Games since
	Main 8	Standard 1		Rapid 0		Blitz 7
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
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	7	1	14.29	-303.6	1442.7	1139.1
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	7	1	14.29	-303.6	1442.7	1139.1
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	53	23.5	44.34	-48.1	1289	1240.9
Standard	12	6	50	0	1250.5	1250.5
Rapid	11	6	54.55	38.6	1237	1275.6
Blitz	30	11.5	38.33	-99.2	1323.5	1224.4

Date	Main	Standard	Rapid	Blitz
2025-09-30	1160.9	1104.6	1050.2	1008
2025-09-01	1162	1104.6	1050.2	1000.4
2025-08-01	1162	1104.6	1050.2	1000.4
2025-07-01	1162	1104.6	1050.2	1000.4
2025-06-01	1162	1104.6	1050.2	1000.4
2025-05-01	1162	1104.6	1050.2	1000.4
2025-04-01	1162	1104.6	1050.2	1000.4
2025-03-01	1162	1104.6	1050.2	1000.4
2025-02-01	1161.9	1104.6	1050.2	1000.4
2025-01-01	1161	1102.4	1050.2	1000.4
2024-12-01	1161	1102.4	1050.2	1000.4
2024-11-01	1161	1102.4	1050.2	1000.4
2024-10-01	1161	1102.4	1050.2	1000.4
2024-09-01	1161	1102.4	1050.2	1000.4
2024-08-01	1161	1102.4	1050.2	1000.4
2024-07-01	1161	1102.4	1050.2	1000.4
2024-06-01	1161	1102.4	1050.2	1000.4
2024-08-01	1161	1102.4	1050.2	1000.4
2024-04-01	1161	1102.4	1050.2	1000.4
2024-03-01	1161	1102.4	1050.2	1000.4
2024-02-01	1161	1102.4	1050.2	1000.4
2024-01-01	1161	1102.4	1050.2	1000.4
2023-12-01	1161	1102.4	1042.4	1000.4
2023-11-01	1161	1102.4	1042.4	1000.4

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	Pacaltsdorp Open 2025 (Open)	2025-08-29	2025-08-29	Blitz	Eden (WEG)	7	7	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Pacaltsdorp Open 2025 (Open)	2025-08-29	2025-08-29	Blitz	Eden (WEG)	7	7	1	Yes	Analysis
2	Eden Chess Union League 2023 (1st Division)	2023-11-11	2023-11-11	Standard	Eden (WEG)	5	1	0	Yes	Analysis
3	Knysna Oyster Festival 2023 (Open)	2023-07-01	2023-07-01	Rapid	Eden (WEG)	6	4	2	Yes	Analysis
4	InterClub Blitz 3 2023	2023-07-20	2023-07-20	Blitz	Eden (WEG)	10	8	3	Yes	Analysis
5	Pacaltsdorp Chess Club 2022 (Blitz)	2022-08-26	2022-08-26	Blitz	Eden (WEG)	6	5	1	Yes	Analysis
6	Interclub Blitz Evening 2022	2022-06-08	2022-06-08	Blitz	Eden (WEG)	6	6	3	Yes	Analysis
7	Interclub Blitz Evening 2022	2022-05-11	2022-05-11	Blitz	Eden (WEG)	6	2	2	Yes	Analysis
8	Eden Open 2022 (B)	2022-04-22	2022-04-24	Standard	Eden (WEG)	6	6	2	Yes	Analysis
9	Western Cape Club Championships 2021 (C)	2021-10-15	2021-10-17	Standard	Eden (WEG)	5	5	4	Yes	Analysis
10	Eden Chess League 2021 (2nd Division)	2021-09-18	2021-09-18	Rapid	Eden (WEG)	7	7	4	Yes	Analysis
11	Quadrangular Chess Tournament First Leg 2020	2020-02-12	2020-02-12	Blitz	Eden (WEG)	6	2	1.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Quadrangular Chess Tournament First Leg 2020				Tournament Eden Chess League 2021
		date 2020-02-12	rnd 3	type Blitz	result 0.5	date 2021-09-18	rnd 3	type Rapid	result 1
		Opponent Campbell, A (Anje)				Opponent Campbell, A (Anje)
2	3	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 2	type Blitz	result 1	date 2022-06-08	rnd 4	type Blitz	result 1
		Opponent Kiewiet, M (Marvin)				Opponent Miggels, A (Alaric)
3	3	Tournament Eden Open 2022				Tournament Eden Open 2022
		date 2022-04-23	rnd 3	type Standard	result 0.5	date 2022-04-24	rnd 5	type Standard	result 0.5
		Opponent Gilbert, C (Calray)				Opponent Le Kay, Y (Yshah)

#	Games	Start				End
1	3	Tournament Eden Open 2022				Tournament Eden Open 2022
		date 2022-04-23	rnd 3	type Standard	result 0.5	date 2022-04-24	rnd 5	type Standard	result 0.5
		Opponent Gilbert, C (Calray)				Opponent Le Kay, Y (Yshah)
2	3	Tournament Western Cape Club Championships 2021				Tournament Western Cape Club Championships 2021
		date 2021-10-16	rnd 3	type Standard	result 1	date 2021-10-17	rnd 5	type Standard	result 1
		Opponent Brink, S (Samantha)				Opponent Jacobs, M (Menwill)
3	1	Tournament Western Cape Club Championships 2021				Tournament Western Cape Club Championships 2021
		date 2021-10-15	rnd 1	type Standard	result 1	date 2021-10-15	rnd 1	type Standard	result 1
		Opponent Pietersen, C (Chandre)				Opponent Pietersen, C (Chandre)

#	Games	Start				End
1	3	Tournament Eden Chess League 2021				Tournament Eden Chess League 2021
		date 2021-09-18	rnd 1	type Rapid	result 1	date 2021-09-18	rnd 3	type Rapid	result 1
		Opponent Cornforth, K (Kayleigh)				Opponent Campbell, A (Anje)
2	2	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 3	type Rapid	result 1
		Opponent Adams, L (Leonard)				Opponent Cornforth, RM (Rodney)
3	1	Tournament Eden Chess League 2021				Tournament Eden Chess League 2021
		date 2021-09-18	rnd 5	type Rapid	result 1	date 2021-09-18	rnd 5	type Rapid	result 1
		Opponent Manhu, J (John)				Opponent Manhu, J (John)

#	Games	Start				End
1	4	Tournament Quadrangular Chess Tournament First Leg 2020				Tournament Interclub Blitz Evening 2022
		date 2020-02-12	rnd 3	type Blitz	result 0.5	date 2022-05-11	rnd 6	type Blitz	result 1
		Opponent Campbell, A (Anje)				Opponent Barends, X (Xavier)
2	3	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 2	type Blitz	result 1	date 2022-06-08	rnd 4	type Blitz	result 1
		Opponent Kiewiet, M (Marvin)				Opponent Miggels, A (Alaric)
3	1	Tournament Pacaltsdorp Open 2025				Tournament Pacaltsdorp Open 2025
		date 2025-08-29	rnd 4	type Blitz	result 1	date 2025-08-29	rnd 4	type Blitz	result 1
		Opponent Gilbert, C (Calray)				Opponent Gilbert, C (Calray)

#	Games	Start				End
1	4	Tournament Quadrangular Chess Tournament First Leg 2020				Tournament Eden Chess League 2021
		date 2020-02-12	rnd 4	type Blitz	result 1	date 2021-09-18	rnd 3	type Rapid	result 1
		Opponent Campbell, A (Anje)				Opponent Campbell, A (Anje)
2	3	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 2	type Blitz	result 1	date 2022-06-08	rnd 4	type Blitz	result 1
		Opponent Kiewiet, M (Marvin)				Opponent Miggels, A (Alaric)
3	3	Tournament Western Cape Club Championships 2021				Tournament Western Cape Club Championships 2021
		date 2021-10-16	rnd 3	type Standard	result 1	date 2021-10-17	rnd 5	type Standard	result 1
		Opponent Brink, S (Samantha)				Opponent Jacobs, M (Menwill)

#	Games	Start				End
1	3	Tournament Western Cape Club Championships 2021				Tournament Western Cape Club Championships 2021
		date 2021-10-16	rnd 3	type Standard	result 1	date 2021-10-17	rnd 5	type Standard	result 1
		Opponent Brink, S (Samantha)				Opponent Jacobs, M (Menwill)
2	1	Tournament Eden Open 2022				Tournament Eden Open 2022
		date 2022-04-23	rnd 4	type Standard	result 1	date 2022-04-23	rnd 4	type Standard	result 1
		Opponent Petersen, S (Shenwin)				Opponent Petersen, S (Shenwin)
3	1	Tournament Western Cape Club Championships 2021				Tournament Western Cape Club Championships 2021
		date 2021-10-15	rnd 1	type Standard	result 1	date 2021-10-15	rnd 1	type Standard	result 1
		Opponent Pietersen, C (Chandre)				Opponent Pietersen, C (Chandre)

#	Games	Start				End
1	3	Tournament Eden Chess League 2021				Tournament Eden Chess League 2021
		date 2021-09-18	rnd 1	type Rapid	result 1	date 2021-09-18	rnd 3	type Rapid	result 1
		Opponent Cornforth, K (Kayleigh)				Opponent Campbell, A (Anje)
2	2	Tournament Knysna Oyster Festival 2023				Tournament Knysna Oyster Festival 2023
		date 2023-07-01	rnd 2	type Rapid	result 1	date 2023-07-01	rnd 3	type Rapid	result 1
		Opponent Adams, L (Leonard)				Opponent Cornforth, RM (Rodney)
3	1	Tournament Eden Chess League 2021				Tournament Eden Chess League 2021
		date 2021-09-18	rnd 5	type Rapid	result 1	date 2021-09-18	rnd 5	type Rapid	result 1
		Opponent Manhu, J (John)				Opponent Manhu, J (John)

#	Games	Start				End
1	3	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 2	type Blitz	result 1	date 2022-06-08	rnd 4	type Blitz	result 1
		Opponent Kiewiet, M (Marvin)				Opponent Miggels, A (Alaric)
2	3	Tournament Quadrangular Chess Tournament First Leg 2020				Tournament Interclub Blitz Evening 2022
		date 2020-02-12	rnd 4	type Blitz	result 1	date 2022-05-11	rnd 6	type Blitz	result 1
		Opponent Campbell, A (Anje)				Opponent Barends, X (Xavier)
3	1	Tournament Pacaltsdorp Open 2025				Tournament Pacaltsdorp Open 2025
		date 2025-08-29	rnd 4	type Blitz	result 1	date 2025-08-29	rnd 4	type Blitz	result 1
		Opponent Gilbert, C (Calray)				Opponent Gilbert, C (Calray)

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	Campbell ,A (Anje)	4	2.5	106.2	1	0	-425	1	1	425	2	1.5	212.5
1	Campbell ,A (Anje)	4	987.2	1093.4	1	1123.4	562.2	1	1086.4	1412.2	2	963.4	1199.7
2	Barends ,X (Xavier)	4	3	212.5	0	0	0	0	0	0	4	3	212.5
2	Barends ,X (Xavier)	4	1210.9	1423.4	0	0	0	0	0	0	4	1099.5	1423.4
3	Miggels ,A (Alaric)	3	2	141.7	0	0	0	1	0	-425	2	2	425
3	Miggels ,A (Alaric)	3	1330.8	1472.4	0	0	0	1	500	905.8	2	558.8	1755.8
4	Osmers ,D (Ditrich)	3	0	-425	0	0	0	0	0	0	3	0	-425
4	Osmers ,D (Ditrich)	3	1327.4	902.4	0	0	0	0	0	0	3	1160.5	902.4
5	Gilbert ,C (Calray)	2	1.5	212.5	1	0.5	0	0	0	0	1	1	425
5	Gilbert ,C (Calray)	2	1202.4	1414.9	1	1200	1202.4	0	0	0	1	1018.7	1627.4
6	Agulhas ,J (Justin)	2	0	-425	0	0	0	1	0	-425	1	0	-425
6	Agulhas ,J (Justin)	2	1502.3	1077.3	0	0	0	1	1316.4	1077.3	1	1621.6	1077.3
7	Reynolds ,E (Erwee)	2	1	0	0	0	0	0	0	0	2	1	0
7	Reynolds ,E (Erwee)	2	1166.1	1166.1	0	0	0	0	0	0	2	1005.6	1166.1
8	Kiewiet ,M (Marvin)	2	1	0	0	0	0	0	0	0	2	1	0
8	Kiewiet ,M (Marvin)	2	1315.6	1315.6	0	0	0	0	0	0	2	788.9	1315.6
9	Botes ,R (Renier)	2	0	-425	0	0	0	0	0	0	2	0	-425
9	Botes ,R (Renier)	2	1366.2	941.2	0	0	0	0	0	0	2	1137.6	941.2
10	Claassen ,R (Ruwaldo)	2	1	0	0	0	0	0	0	0	2	1	0
10	Claassen ,R (Ruwaldo)	2	1450.1	1450.1	0	0	0	0	0	0	2	1318.4	1450.1

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Potts, M (Markwin)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms