Chess South Africa Ratings Database

PLAYER PAGE

Personal

Du Plessis, S (Stefan)

Chess SA id

107087110

FIDE id

Date of birth

2007-04-07 (U20)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-14

Personal details last changed

1900-01-01

Junior GPX Games

18.2

Junior GPX Points

1271.8

Item	Main	Standard	Rapid	Blitz
Rating	1454.9	1417.6	1431.1	709.2
Raw rating	1454.9	1417.6	1428.2	709.2
Weighted rating	1447.7	1384.1	1431.1	709.2
Weighted performance	1314.1	1268.8	1247.7	0
Floor	985.4	917.6	945.4	500
K-factor	32	32	32	40
Min/Max rating change allowed	115.3	121.6	119.8	333.7
Highest rating	1509.9 2023-07-01	1417.6 2025-05-05	1445.4 2024-12-01	1200 2024-02-01
Highest raw rating	1485.4 2024-03-01	1417.6 2025-05-05	1445.4 2024-12-01	709.2 2024-02-01
Highest weighted rating	1485.4 2024-08-01	1417.6 2024-08-01	1445.4 2025-07-01	709.2 2024-11-01
Highest weighted performance	1509.9 2023-07-01	1407.4 2023-07-01	1429.2 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.4	0
New rating	1454.9	1417.6	1431.5	709.2
Analysis
Rating	1454.9	1417.6	1431.1	709.2
Raw rating	1454.9	1417.6	1428.2	709.2
Weighted rating	1447.7	1384.1	1431.1
Weighted performance	1314.1	1268.8	1247.7
K-factor	32	32	32	40
Floor	985.4	917.6	945.4	500
Max/Min rating change allowed	115.3	121.6	119.8	333.7
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	1454.9	1417.6	1428.2	709.2
New weighted rating	1448.1	1387.1	1431.5	709.2
New weighted performance	1313.6	1268.3	1247.3	0
Temp new rating	1454.9	1417.6	1431.5	709.2
Temp new rating +/-	0	0	0.4	0
Final new rating +/-	0	0	0.4	0
New rating	1454.9	1417.6	1431.5	709.2
New K-factor	32	32	32	40
New floor	985.4	917.6	945.4	500

Item	Main	Standard	Rapid
	0	0	0
	21	12	9
	31	12	19
	31	17	14
	20	11	9
	5	0	5
History	211	103	108

Games since
	Main 57	Standard 24		Rapid 33		Blitz 0
Gender	Male
Age group	U20
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1604		488		34
Male	1354		398		28
U20	144		50		3
U20 Male	120		44		3
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	390		190		42
Male	351		169		31
U20	25		16		4
U20 Male	23		16		4
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	21	13	61.9	101.2	1358.4	1459.6
Standard	12	8.5	70.83	177.1	1366.1	1543.2
Rapid	9	4.5	50	0	1348.2	1348.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	187	116	62.03	102.3	1247.8	1350
Standard	97	56	57.73	65.7	1253.4	1319.1
Rapid	90	60	66.67	141.7	1241.7	1383.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1454.9	1417.6	1428.2	709.2
2025-09-01	1454.9	1417.6	1428.2	709.2
2025-08-01	1454.9	1417.6	1428.2	709.2
2025-07-01	1474.7	1417.6	1438.5	709.2
2025-06-01	1474.7	1417.6	1438.5	709.2
2025-05-01	1474.7	1417.6	1438.5	709.2
2025-04-01	1458	1385.3	1438.5	709.2
2025-03-01	1439	1363.2	1438.5	709.2
2025-02-01	1438.2	1361.6	1445.4	709.2
2025-01-01	1422.6	1335.9	1445.4	709.2
2024-12-01	1422.6	1335.9	1445.4	709.2
2024-11-01	1407.7	1335.9	1420.8	709.2
2024-10-01	1407.7	1335.9	1420.8	709.2
2024-09-01	1407.7	1335.9	1420.8	709.2
2024-08-01	1438	1365	1420.8	709.2
2024-07-01	1438	1365	1420.8	709.2
2024-06-01	1438	1365	1420.8	709.2
2024-08-01	1444	1365	1430.4	709.2
2024-04-01	1444	1365	1430.4	709.2
2024-03-01	1485.4	1401.8	1430.4	709.2
2024-02-01	1475.8	1401.8	1381.8	709.2
2024-01-01	1475.8	1401.8	1381.8	709.2
2023-12-01	1475.8	1401.8	1381.8	709.2
2023-11-01	1475.8	1401.8	1381.8	709.2

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	Lower West Coast Top Schools 2025 (U19)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	1	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U19 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
3	West Coast Schools Chess Prestige 2025 (U19)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
4	Lower West Coast Prestige 2025 (U19 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Lower West Coast Top Schools 2025 (U19)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	1	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U19 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
3	West Coast Schools Chess Prestige 2025 (U19)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
4	Lower West Coast Prestige 2025 (U19 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
5	West Coast Grand Challange League 2024 (HS Champions)	2024-10-26	2024-10-26	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
6	Pedro Booyse Top Schools Championships 2024 (U18)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	6	6	1.5	Yes	Analysis
7	Lower West Top Schools 2024 (U18)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
8	Western Cape HS Individuals Championship 2024 (U18 Boys)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	2.5	Yes	Analysis
9	West Coast Schools Chess Prestige Championships 2024 (U18+U20 Boys)	2024-02-24	2024-02-24	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
10	Lower West Coast Schools Chess Prestige 2024 (U18 Boys)	2024-02-17	2024-02-17	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
11	West Coast Primary Schools Grand Challenge League 2023 (High School)	2023-10-21	2023-10-21	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
12	Pedro Booyse Top Schools 2023 (High School)	2023-07-29	2023-07-29	Standard	West Coast (WCU)	5	5	5	Yes	Analysis
13	Lower West Coast Top Schools Championships 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	2.5	Yes	Analysis
14	Western Cape HS Individuals 2023 (U17 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
15	West Coast High School Championships 2023 (U17 Boys)	2023-02-18	2023-02-18	Standard	West Coast (WCU)	6	6	4.5	Yes	Analysis
16	Lower West Coast High Schools Prestige 2023 (U17 Boys)	2023-02-11	2023-02-11	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
17	West Coast Schools Chess Grand Challenge 2022 (HS Super)	2022-10-29	2022-10-29	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
18	Onder-Weskus Top Skole 2022 (Hoerskool)	2022-06-04	2022-06-04	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
19	Drakenstein Pioneers Open 2022 (B)	2022-03-26	2022-03-26	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
20	West Coast Schools Prestige 2022 (U15 Boys)	2022-02-19	2022-02-19	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
21	Lower West Coast 2021 (U15 Boys)	2021-04-10	2021-04-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
22	West Coast Schools Prestige 2020 (U13 Boys)	2020-03-07	2020-03-07	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
23	Onder Weskus Prestige 2020 (U13 Boys)	2020-02-15	2020-02-22	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
24	Back to School Rapid 2020 (Boys)	2020-02-01	2020-02-01	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
25	Western Cape Top Schools 2019 (U13 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
26	Curro Durbanville Chess Tournament 2019 (Premier)	2019-08-23	2019-08-24	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
27	Weskus Topskole 2019 (U13)	2019-07-20	2019-07-20	Rapid	West Coast (WCU)	5	3	3	Yes	Analysis
28	Rhenish Primary Chess Tournament 2019 (U14)	2019-05-11	2019-05-11	Rapid	Cape Winelands (WCW)	7	7	4	Yes	Analysis
29	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O13 Seuns)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
30	Onder-Weskus Skole Proewe 2019 (O13 Seuns)	2019-02-16	2019-02-23	Rapid	West Coast (WCU)	7	7	5	Yes	Analysis
31	2018 Swartland Open (B)	2018-09-14	2018-09-15	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
32	Western Cape Top Schools 2018 (U11 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
33	Western Cape Schools Individuals 2018 (U11 Boys)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	3	Yes	Analysis
34	Rhenish Primary Chess Tournament 2018 (U12)	2018-05-12	2018-05-12	Rapid	Cape Winelands (WCW)	7	7	4	Yes	Analysis
35	West Coast Schools Prestige Individual Championship 2018 (U11 Boys)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis

#	Games	Start				End
1	10	Tournament Lower West Coast Top Schools Championships 2023				Tournament West Coast Primary Schools Grand Challenge League 2023
		date 2023-06-10	rnd 2	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Opperman, M (Matthew)				Opponent Pieters, D (Damian)
2	6	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Prestige 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 0.5
		Opponent Warner, A (Alicia)				Opponent Limani, I (Indiphile)
3	5	Tournament West Coast Schools Chess Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-04-26	rnd 4	type Standard	result 1
		Opponent Klaase, R (Ryan)				Opponent Chadwick, M (Matthew)

#	Games	Start				End
1	8	Tournament Western Cape HS Individuals 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-04-02	rnd 4	type Standard	result 1	date 2023-07-29	rnd 5	type Standard	result 1
		Opponent Koegelenberg, D (Daniel)				Opponent Beukes, H (Hen-Lee)
2	5	Tournament West Coast Schools Chess Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-04-26	rnd 4	type Standard	result 1
		Opponent Klaase, R (Ryan)				Opponent Chadwick, M (Matthew)
3	4	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Filander, J (Jayrin)				Opponent Flink, M (Marc-Ethan)

#	Games	Start				End
1	6	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Prestige 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 0.5
		Opponent Warner, A (Alicia)				Opponent Limani, I (Indiphile)
2	5	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 3	type Rapid	result 1
		Opponent Filander, J (Jayrin)				Opponent Maans, L (Luduwhaan)
3	5	Tournament Lower West Coast Top Schools Championships 2023				Tournament West Coast Primary Schools Grand Challenge League 2023
		date 2023-06-10	rnd 2	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Opperman, M (Matthew)				Opponent Pieters, D (Damian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Lower West Coast Top Schools Championships 2023				Tournament West Coast Primary Schools Grand Challenge League 2023
		date 2023-06-10	rnd 5	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Williams, C (Clarance-John)				Opponent Pieters, D (Damian)
2	5	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Prestige 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Warner, A (Alicia)				Opponent Mkilayi, O (Odwa)
3	5	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 3	type Rapid	result 1
		Opponent Filander, J (Jayrin)				Opponent Maans, L (Luduwhaan)

#	Games	Start				End
1	8	Tournament Western Cape HS Individuals 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-04-02	rnd 4	type Standard	result 1	date 2023-07-29	rnd 5	type Standard	result 1
		Opponent Koegelenberg, D (Daniel)				Opponent Beukes, H (Hen-Lee)
2	4	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Filander, J (Jayrin)				Opponent Flink, M (Marc-Ethan)
3	4	Tournament Onder Weskus Prestige 2020				Tournament West Coast Schools Prestige 2022
		date 2020-02-22	rnd 6	type Standard	result 1	date 2022-02-19	rnd 3	type Standard	result 1
		Opponent Isaacs, K (Kallum)				Opponent Kearns, R (Ray)

#	Games	Start				End
1	5	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Prestige 2025
		date 2024-10-26	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Warner, A (Alicia)				Opponent Mkilayi, O (Odwa)
2	5	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 3	type Rapid	result 1
		Opponent Filander, J (Jayrin)				Opponent Maans, L (Luduwhaan)
3	5	Tournament Weskus Topskole 2019				Tournament Back to School Rapid 2020
		date 2019-07-20	rnd 2	type Rapid	result 1	date 2020-02-01	rnd 2	type Rapid	result 1
		Opponent Boks, L (Li-Thann)				Opponent Lu, DTX (Daniel Ting Xu)

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	Kariem ,S (Shakir)	11	1	-347.7	5	1	-255	6	0	-425	0	0	0
1	Kariem ,S (Shakir)	11	1482.1	1134.4	5	1381.4	1227.1	6	1450.3	1057.1	0	0	0
2	Njokweni ,L (Llyabona)	7	1	-303.6	4	0	-425	3	1	-141.7	0	0	0
2	Njokweni ,L (Llyabona)	7	1419.1	1115.5	4	1482.7	994.1	3	1276.4	1277.4	0	0	0
3	Opperman ,M (Matthew)	7	1	-303.6	2	0	-425	5	1	-255	0	0	0
3	Opperman ,M (Matthew)	7	1500.3	1196.7	2	1471	1075.3	5	1400.9	1245.3	0	0	0
4	Filander ,J (Jayrin)	5	5	425	1	1	425	4	4	425	0	0	0
4	Filander ,J (Jayrin)	5	1194.2	1619.2	1	1178.3	1619.2	4	1185.6	1619.2	0	0	0
5	Lewaks ,S (Shaundre)	4	2	0	2	2	425	2	0	-425	0	0	0
5	Lewaks ,S (Shaundre)	4	1450.8	1450.8	2	1289.2	1875.8	2	1576.8	1025.8	0	0	0
6	Maroem ,D (Daron)	3	3	425	3	3	425	0	0	0	0	0	0
6	Maroem ,D (Daron)	3	1218.9	1643.9	3	1217.8	1643.9	0	0	0	0	0	0
7	Hendricks ,G (Guevante)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
7	Hendricks ,G (Guevante)	3	1318.5	1601.9	3	1229.6	1601.9	0	0	0	0	0	0
8	Limani ,I (Indiphile)	3	1.5	0	1	1	425	2	0.5	-212.5	0	0	0
8	Limani ,I (Indiphile)	3	1389.2	1389.2	1	1294.8	1814.2	2	1330.6	1176.7	0	0	0
9	Ruiters ,A (Adriaan)	3	3	425	1	1	425	2	2	425	0	0	0
9	Ruiters ,A (Adriaan)	3	1176.7	1601.7	1	1147.2	1601.7	2	1187.6	1601.7	0	0	0
10	Fillis ,J (Jordan)	3	3	425	1	1	425	2	2	425	0	0	0
10	Fillis ,J (Jordan)	3	1370.6	1795.6	1	1352.9	1795.6	2	1049	1795.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Du Plessis, S (Stefan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms