Chess South Africa Ratings Database

PLAYER PAGE

Personal

Loon, M (Marc)

Chess SA id

1700148035

FIDE id

Date of birth

1970-04-04 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1570.7	1570.7	1392.4	1346.7
Raw rating	1570.7	1570.7	1392.4	1346.7
Weighted rating	1488.5	1489.4	1387.5	1333.5
Weighted performance	1448	1482.3	0	0
Floor	1070.7	1070.7	919	856.3
K-factor	32	32	32	36
Min/Max rating change allowed	97.8	97.8	126.1	134.5
Highest rating	1573.8 2022-12-01	1570.7 2025-07-01	1476.4 2024-06-01	1379.7 2024-11-01
Highest raw rating	1570.7 2025-08-01	1570.7 2025-07-01	1419 2025-03-01	1356.3 2025-02-01
Highest weighted rating	1467.1 2025-08-01	1468 2025-08-01	1382 2025-08-01	1326.8 2025-08-01
Highest weighted performance	1573.8 2022-12-01	1567.7 2022-12-01	1476.4 2024-06-01	1379.7 2024-11-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1570.7	1570.7	1392.4	1346.7
Analysis
Rating	1570.7	1570.7	1392.4	1346.7
Raw rating	1570.7	1570.7	1392.4	1346.7
Weighted rating	1488.5	1489.4	1387.5
Weighted performance	1448	1482.3	0
K-factor	32	32	32	36
Floor	1070.7	1070.7	919	856.3
Max/Min rating change allowed	97.8	97.8	126.1	134.5
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	1570.7	1570.7	1392.4	1346.7
New weighted rating	1498.1	1498.8	1389.6	1336.1
New weighted performance	1447.4	1481.8	0	0
Temp new rating	1570.7	1570.7	1392.4	1346.7
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1570.7	1570.7	1392.4	1346.7
New K-factor	32	32	32	36
New floor	1070.7	1070.7	919	856.3

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	54	16	13	25
	33	18	6	9
	20	14	6	0
	3	3	0	0
	0	0	0	0
History	110	51	25	34

Games since
	Main 87	Standard 34		Rapid 19		Blitz 34
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	795		294		108
Male	710		261		94
Adult	317		126		54
Adult Male	300		120		50
Standard
	RSA		Province		Region
Overall	734		279		97
Male	649		246		84
Adult	281		116		47
Adult Male	266		110		43
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	229		69		38
Male	221		66		36
Adult	169		52		27
Adult Male	163		50		26


	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	54	27.5	50.93	7.9	1571.1	1579
Standard	16	9	56.25	53.1	1618.7	1671.8
Rapid	13	6	46.15	-32.7	1576.4	1543.8
Blitz	25	12.5	50	0	1537.8	1537.8
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	110	56.5	51.36	11.6	1526.7	1538.3
Standard	51	27	52.94	25	1522.8	1547.8
Rapid	25	13	52	17	1533.5	1550.5
Blitz	34	16.5	48.53	-12.5	1527.5	1515

Date	Main	Standard	Rapid	Blitz
2025-09-30	1570.7	1570.7	1392.4	1346.7
2025-09-01	1570.7	1570.7	1392.4	1346.7
2025-08-01	1570.7	1570.7	1392.4	1346.7
2025-07-01	1569.2	1570.7	1392.4	1356.3
2025-06-01	1500.5	1492	1392.4	1356.3
2025-05-01	1500.5	1492	1392.4	1356.3
2025-04-01	1467.2	1455.6	1419	1356.3
2025-03-01	1467.2	1455.6	1419	1356.3
2025-02-01	1449.3	1455.6	1393.3	1356.3
2025-01-01	1448.8	1455.6	1393.3	1320.5
2024-12-01	1448.8	1455.6	1393.3	1320.5
2024-11-01	1468.7	1476.1	1393.3	1320.5
2024-10-01	1465.1	1469.4	1393.3	1300
2024-09-01	1465.1	1469.4	1393.3	1300
2024-08-01	1465.1	1469.4	1393.3	1300
2024-07-01	1465.1	1469.4	1393.3	1300
2024-06-01	1450.1	1469.4	1330.7	1300
2024-08-01	1355	1366.8	1330.7	1300
2024-04-01	1355	1366.8	1330.7	1300
2024-03-01	1355	1366.8	1330.7	1300
2024-02-01	1355	1366.8	1330.7	1300
2024-01-01	1355	1366.8	1330.7	1300
2023-12-01	1350.2	1326.7	1243.6	1200
2023-11-01	1350.2	1326.7	1243.6	1200

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	Randburg Club Champs Blitz 2025	2025-07-08	2025-07-08	Blitz	Johannesburg Metro (GJM)	7	7	4	Yes	Analysis
2	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
3	Neil Savage Memorial Randburg Club Champs 2025	2025-05-06	2025-06-24	Standard	Johannesburg Metro (GJM)	8	8	4.5	Yes	Analysis
4	Randburg Autumn Rapid 2025	2025-04-15	2025-04-22	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
5	Randburg Chess Club New Year Swiss 2025	2025-02-11	2025-04-01	Standard	Johannesburg Metro (GJM)	8	8	4.5	Yes	Analysis
6	Randburg Chess Club New Year Rapid 2025	2025-01-28	2025-02-04	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
7	Randburg New Year Blitz 2025	2025-01-21	2025-01-21	Blitz	Johannesburg Metro (GJM)	9	9	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Randburg Club Champs Blitz 2025	2025-07-08	2025-07-08	Blitz	Johannesburg Metro (GJM)	7	7	4	Yes	Analysis
2	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
3	Neil Savage Memorial Randburg Club Champs 2025	2025-05-06	2025-06-24	Standard	Johannesburg Metro (GJM)	8	8	4.5	Yes	Analysis
4	Randburg Autumn Rapid 2025	2025-04-15	2025-04-22	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
5	Randburg Chess Club New Year Swiss 2025	2025-02-11	2025-04-01	Standard	Johannesburg Metro (GJM)	8	8	4.5	Yes	Analysis
6	Randburg Chess Club New Year Rapid 2025	2025-01-28	2025-02-04	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
7	Randburg New Year Blitz 2025	2025-01-21	2025-01-21	Blitz	Johannesburg Metro (GJM)	9	9	4	Yes	Analysis
8	Randburg Summer Swiss 2024	2024-10-29	2024-11-26	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
9	Randburg Chess Club Blitz Championship 2024	2024-10-22	2024-10-22	Blitz	Johannesburg Metro (GJM)	9	9	4	Yes	Analysis
10	Randburg Spring Swiss 2024	2024-08-20	2024-10-08	Standard	Johannesburg Metro (GJM)	7	6	3	Yes	Analysis
11	Randburg Autumn Rapid 2024	2024-05-28	2024-06-04	Rapid	Johannesburg Metro (GJM)	6	6	4	Yes	Analysis
12	Randburg Chess Club Championship 2024	2024-04-09	2024-05-21	Standard	Johannesburg Metro (GJM)	7	7	4.5	Yes	Analysis
13	Randburg Mid-Year Themed Rapid 2023	2023-05-30	2023-06-06	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
14	Randburg Autumn Swiss 2023	2023-04-11	2023-05-23	Standard	Johannesburg Metro (GJM)	7	7	3.5	Yes	Analysis
15	Randburg New Year Swiss 2023	2023-01-31	2023-03-14	Standard	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
16	Randburg Summer Swiss 2022	2022-10-25	2022-12-06	Standard	Johannesburg Metro (GJM)	7	3	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Randburg Autumn Rapid 2024				Tournament Randburg Spring Swiss 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-09-03	rnd 3	type Standard	result 1
		Opponent Tracey, T (Terence)				Opponent Metcalfe, AR (Allister)
2	3	Tournament Randburg Club Champs Blitz 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-08	rnd 3	type Blitz	result 1	date 2025-07-08	rnd 5	type Blitz	result 1
		Opponent Jacobs, T (Tristan Lee)				Opponent Malaza, M (Malibongwe)
3	3	Tournament South African Open 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-02	rnd 8	type Blitz	result 1	date 2025-07-08	rnd 1	type Blitz	result 1
		Opponent Nemusombori, L (Livhuwani Nathan)				Opponent Steyn, C (Christiaan)

#	Games	Start				End
1	5	Tournament Randburg Chess Club New Year Swiss 2025				Tournament Neil Savage Memorial Randburg Club Champs 2025
		date 2025-03-25	rnd 7	type Standard	result 1	date 2025-05-20	rnd 3	type Standard	result 1
		Opponent Kruger, I (Ivan)				Opponent Foley, PJ (Patrick James)
2	4	Tournament Randburg Chess Club Championship 2024				Tournament Randburg Spring Swiss 2024
		date 2024-05-14	rnd 6	type Standard	result 0.5	date 2024-09-03	rnd 3	type Standard	result 1
		Opponent Roux, P (Paul)				Opponent Metcalfe, AR (Allister)
3	2	Tournament Neil Savage Memorial Randburg Club Champs 2025				Tournament Neil Savage Memorial Randburg Club Champs 2025
		date 2025-06-10	rnd 6	type Standard	result 1	date 2025-06-17	rnd 7	type Standard	result 1
		Opponent Kruger, I (Ivan)				Opponent Mendelsohn, DC (David Charles)

#	Games	Start				End
1	3	Tournament Randburg Chess Club New Year Rapid 2025				Tournament Randburg Chess Club New Year Rapid 2025
		date 2025-01-28	rnd 2	type Rapid	result 1	date 2025-02-04	rnd 4	type Rapid	result 1
		Opponent Molema, W (Warner)				Opponent Durow, NL (Neil)
2	3	Tournament Randburg Autumn Rapid 2024				Tournament Randburg Autumn Rapid 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-06-04	rnd 6	type Rapid	result 1
		Opponent Tracey, T (Terence)				Opponent Ngubeni, JM (Jackie)
3	1	Tournament Randburg Autumn Rapid 2025				Tournament Randburg Autumn Rapid 2025
		date 2025-04-22	rnd 6	type Rapid	result 1	date 2025-04-22	rnd 6	type Rapid	result 1
		Opponent Kruger, I (Ivan)				Opponent Kruger, I (Ivan)

#	Games	Start				End
1	3	Tournament Randburg Club Champs Blitz 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-08	rnd 3	type Blitz	result 1	date 2025-07-08	rnd 5	type Blitz	result 1
		Opponent Jacobs, T (Tristan Lee)				Opponent Malaza, M (Malibongwe)
2	3	Tournament South African Open 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-02	rnd 8	type Blitz	result 1	date 2025-07-08	rnd 1	type Blitz	result 1
		Opponent Nemusombori, L (Livhuwani Nathan)				Opponent Steyn, C (Christiaan)
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 1	type Blitz	result 0.5	date 2025-07-02	rnd 2	type Blitz	result 1
		Opponent Mahlangu, S (Sello)				Opponent Zondi, O (Owethu)

#	Games	Start				End
1	5	Tournament Randburg Autumn Rapid 2024				Tournament Randburg Spring Swiss 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-09-03	rnd 3	type Standard	result 1
		Opponent Tracey, T (Terence)				Opponent Metcalfe, AR (Allister)
2	3	Tournament Randburg Club Champs Blitz 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-08	rnd 3	type Blitz	result 1	date 2025-07-08	rnd 5	type Blitz	result 1
		Opponent Jacobs, T (Tristan Lee)				Opponent Malaza, M (Malibongwe)
3	3	Tournament South African Open 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-02	rnd 8	type Blitz	result 1	date 2025-07-08	rnd 1	type Blitz	result 1
		Opponent Nemusombori, L (Livhuwani Nathan)				Opponent Steyn, C (Christiaan)

#	Games	Start				End
1	3	Tournament Randburg Chess Club Championship 2024				Tournament Randburg Spring Swiss 2024
		date 2024-05-21	rnd 7	type Standard	result 1	date 2024-09-03	rnd 3	type Standard	result 1
		Opponent Jones, GTD (Graham)				Opponent Metcalfe, AR (Allister)
2	2	Tournament Neil Savage Memorial Randburg Club Champs 2025				Tournament Neil Savage Memorial Randburg Club Champs 2025
		date 2025-06-10	rnd 6	type Standard	result 1	date 2025-06-17	rnd 7	type Standard	result 1
		Opponent Kruger, I (Ivan)				Opponent Mendelsohn, DC (David Charles)
3	2	Tournament Neil Savage Memorial Randburg Club Champs 2025				Tournament Neil Savage Memorial Randburg Club Champs 2025
		date 2025-05-13	rnd 2	type Standard	result 1	date 2025-05-20	rnd 3	type Standard	result 1
		Opponent Snyckers, FA (Frank Alexander)				Opponent Foley, PJ (Patrick James)

#	Games	Start				End
1	3	Tournament Randburg Chess Club New Year Rapid 2025				Tournament Randburg Chess Club New Year Rapid 2025
		date 2025-01-28	rnd 2	type Rapid	result 1	date 2025-02-04	rnd 4	type Rapid	result 1
		Opponent Molema, W (Warner)				Opponent Durow, NL (Neil)
2	3	Tournament Randburg Autumn Rapid 2024				Tournament Randburg Autumn Rapid 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-06-04	rnd 6	type Rapid	result 1
		Opponent Tracey, T (Terence)				Opponent Ngubeni, JM (Jackie)
3	1	Tournament Randburg Autumn Rapid 2025				Tournament Randburg Autumn Rapid 2025
		date 2025-04-22	rnd 6	type Rapid	result 1	date 2025-04-22	rnd 6	type Rapid	result 1
		Opponent Kruger, I (Ivan)				Opponent Kruger, I (Ivan)

#	Games	Start				End
1	3	Tournament Randburg Club Champs Blitz 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-08	rnd 3	type Blitz	result 1	date 2025-07-08	rnd 5	type Blitz	result 1
		Opponent Jacobs, T (Tristan Lee)				Opponent Malaza, M (Malibongwe)
2	3	Tournament South African Open 2025				Tournament Randburg Club Champs Blitz 2025
		date 2025-07-02	rnd 8	type Blitz	result 1	date 2025-07-08	rnd 1	type Blitz	result 1
		Opponent Nemusombori, L (Livhuwani Nathan)				Opponent Steyn, C (Christiaan)
3	2	Tournament Randburg New Year Blitz 2025				Tournament Randburg New Year Blitz 2025
		date 2025-01-21	rnd 6	type Blitz	result 1	date 2025-01-21	rnd 7	type Blitz	result 1
		Opponent Jones, M (Michael)				Opponent Mungal, S (Shane)

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	Molema ,W (Warner)	6	6	425	3	3	425	3	3	425	0	0	0
1	Molema ,W (Warner)	6	1194.9	1619.9	3	1184.6	1619.9	3	1136.8	1619.9	0	0	0
2	Essop ,R (Rashied)	5	2	-85	3	1	-141.7	1	0	-425	1	1	425
2	Essop ,R (Rashied)	5	1488.1	1403.1	3	1501	1346.5	1	1412.7	1063.1	1	1232.5	1913.1
3	Hodgson ,TF (Timothy Fish)	5	1	-255	2	1	0	2	0	-425	1	0	-425
3	Hodgson ,TF (Timothy Fish)	5	1626.8	1371.8	2	1626.4	1626.8	2	1650.2	1201.8	1	1567.6	1201.8
4	Snyckers ,FA (Frank Alexander)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
4	Snyckers ,FA (Frank Alexander)	4	1533.3	1320.8	4	1532.8	1320.8	0	0	0	0	0	0
5	Metcalfe ,AR (Allister Richard)	4	2	0	2	1	0	2	1	0	0	0	0
5	Metcalfe ,AR (Allister Richard)	4	1721.5	1721.5	2	1740.4	1721.5	2	1695.8	1721.5	0	0	0
6	Tak ,R (Rannveer)	4	0	-425	2	0	-425	0	0	0	2	0	-425
6	Tak ,R (Rannveer)	4	1780.7	1355.7	2	1786.3	1355.7	0	0	0	2	1532.1	1355.7
7	Durow ,NL (Neil)	4	1	-212.5	1	0	-425	2	1	0	1	0	-425
7	Durow ,NL (Neil)	4	1668.4	1455.9	1	1646.3	1243.4	2	1711.8	1668.4	1	1804.8	1243.4
8	Ngubeni ,JM (Jackie)	4	2	0	1	1	425	2	1	0	1	0	-425
8	Ngubeni ,JM (Jackie)	4	1509.1	1509.1	1	1394.6	1934.1	2	1587.9	1509.1	1	1501.5	1084.1
9	Kruger ,I (Ivan)	3	3	425	2	2	425	1	1	425	0	0	0
9	Kruger ,I (Ivan)	3	1472.5	1897.5	2	1506.8	1897.5	1	1346.5	1897.5	0	0	0
10	Van Der Berg ,P (Pieter)	3	0	-425	2	0	-425	0	0	0	1	0	-425
10	Van Der Berg ,P (Pieter)	3	1543.2	1118.2	2	1489.9	1118.2	0	0	0	1	1300	1118.2

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Loon, M (Marc)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms