Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, D (Duwayne)

Chess SA id

103077678

FIDE id

Date of birth

2003-12-21 (Adult)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-08-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1079.4	1046.8	1200	1170.5
Raw rating	1079.4	1046.8	1200	1170.5
Weighted rating	1079.4	1046.8	1200	1170.5
Weighted performance	0	0	0	0
Floor	703.9	700	700	721.6
K-factor	36	36	36	36
Min/Max rating change allowed	196.9	206.3	165.8	172.9
Highest rating	1464 2018-02-01	1200 2018-02-01	1200 2018-10-01	1626.7 2018-02-01
Highest raw rating	1203.9 2018-03-01	1200 2018-02-01	1200 2024-02-01	1221.6 2018-03-01
Highest weighted rating	1203.9 2018-03-01	1200 2018-02-01	1200 2018-10-01	1221.6 2018-04-01
Highest weighted performance	1464 2018-02-01	1200 2018-02-01	1200 2024-02-01	1626.7 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1079.4	1046.8	1200	1170.5
Analysis
Rating	1079.4	1046.8	1200	1170.5
Raw rating	1079.4	1046.8	1200	1170.5
Weighted rating	1079.4	1046.8	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	703.9	700	700	721.6
Max/Min rating change allowed	196.9	206.3	165.8	172.9
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	1079.4	1046.8	1200	1170.5
New weighted rating	1079.4	1046.8	1200	1170.5
New weighted performance	0	0	0	0
Temp new rating	1079.4	1046.8	1200	1170.5
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1079.4	1046.8	1200	1170.5
New K-factor	36	36	36	36
New floor	703.9	700	700	721.6

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	40	22	10	8

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	West Coast (WCU)
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	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	23	9	39.13	-92.4	1085.8	993.4
Standard	15	5	33.33	-141.7	1076.6	935
Rapid	0	0	0	0	0	0
Blitz	8	4	50	0	1103	1103

Date	Main	Standard	Rapid	Blitz
2025-09-30	1079.4	1046.8	1200	1170.5
2025-09-01	1079.4	1046.8	1200	1170.5
2025-08-01	1079.4	1046.8	1200	1170.5
2025-07-01	1079.4	1046.8	1200	1170.5
2025-06-01	1079.4	1046.8	1200	1170.5
2025-05-01	1079.4	1046.8	1200	1170.5
2025-04-01	1079.4	1046.8	1200	1170.5
2025-03-01	1079.4	1046.8	1200	1170.5
2025-02-01	1079.4	1046.8	1200	1170.5
2025-01-01	1079.4	1046.8	1200	1170.5
2024-12-01	1079.4	1046.8	1200	1170.5
2024-11-01	1079.4	1046.8	1200	1170.5
2024-10-01	1079.4	1046.8	1200	1170.5
2024-09-01	1079.4	1046.8	1200	1170.5
2024-08-01	1079.4	1046.8	1200	1170.5
2024-07-01	1079.4	1046.8	1200	1170.5
2024-06-01	1079.4	1046.8	1200	1170.5
2024-08-01	1079.4	1046.8	1200	1170.5
2024-04-01	1079.4	1046.8	1200	1170.5
2024-03-01	1079.4	1046.8	1200	1170.5
2024-02-01	1079.4	1046.8	1200	1170.5
2024-01-01	1079.4	1046.8	1200	1170.5
2023-12-01	1079.4	1046.8	1200	1170.5
2023-11-01	1079.4	1046.8	1200	1170.5

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	Western Cape Top Schools 2018 (U15 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	5	1	Yes	Analysis
2	Inter Regional 2018 (U16 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	4	2	Yes	Analysis
3	Freedom Day Blitz 2018 (Men)	2018-04-27	2018-04-27	Blitz	West Coast (WCU)	7	7	3	Yes	Analysis
4	West Coast Schools Prestige Individual Championship 2018 (U15 Boys)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	2	Yes	Analysis
5	Mykonos Blitz U8 (U14+U16)	2018-02-04	2018-02-04	Blitz	West Coast (WCU)	5	1	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 4	type Blitz	result 1	date 2018-04-27	rnd 5	type Blitz	result 1
		Opponent Visagie, C (Christopher)				Opponent Theron, M (Martin)
2	1	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-25	rnd 3	type Standard	result 1
		Opponent Witbooi, Y (Yasmin)				Opponent Witbooi, Y (Yasmin)
3	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Meyer, T (Tyrone)				Opponent Meyer, T (Tyrone)

#	Games	Start				End
1	1	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-25	rnd 3	type Standard	result 1
		Opponent Witbooi, Y (Yasmin)				Opponent Witbooi, Y (Yasmin)
2	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Meyer, T (Tyrone)				Opponent Meyer, T (Tyrone)
3	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Tshivhule, E (Eric)				Opponent Tshivhule, E (Eric)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 4	type Blitz	result 1	date 2018-04-27	rnd 5	type Blitz	result 1
		Opponent Visagie, C (Christopher)				Opponent Theron, M (Martin)
2	1	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 2	type Blitz	result 1	date 2018-04-27	rnd 2	type Blitz	result 1
		Opponent Williams, I (Ivan)				Opponent Williams, I (Ivan)
3	1	Tournament Mykonos Blitz U8				Tournament Mykonos Blitz U8
		date 2018-02-04	rnd 1	type Blitz	result 1	date 2018-02-04	rnd 1	type Blitz	result 1
		Opponent Maxongo, M (Milla)				Opponent Maxongo, M (Milla)

#	Games	Start				End
1	2	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 4	type Blitz	result 1	date 2018-04-27	rnd 5	type Blitz	result 1
		Opponent Visagie, C (Christopher)				Opponent Theron, M (Martin)
2	1	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-25	rnd 3	type Standard	result 1
		Opponent Witbooi, Y (Yasmin)				Opponent Witbooi, Y (Yasmin)
3	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Meyer, T (Tyrone)				Opponent Meyer, T (Tyrone)

#	Games	Start				End
1	1	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-25	rnd 3	type Standard	result 1
		Opponent Witbooi, Y (Yasmin)				Opponent Witbooi, Y (Yasmin)
2	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 4	type Standard	result 1
		Opponent Meyer, T (Tyrone)				Opponent Meyer, T (Tyrone)
3	1	Tournament Inter Regional 2018				Tournament Inter Regional 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Tshivhule, E (Eric)				Opponent Tshivhule, E (Eric)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 4	type Blitz	result 1	date 2018-04-27	rnd 5	type Blitz	result 1
		Opponent Visagie, C (Christopher)				Opponent Theron, M (Martin)
2	1	Tournament Freedom Day Blitz 2018				Tournament Freedom Day Blitz 2018
		date 2018-04-27	rnd 2	type Blitz	result 1	date 2018-04-27	rnd 2	type Blitz	result 1
		Opponent Williams, I (Ivan)				Opponent Williams, I (Ivan)
3	1	Tournament Mykonos Blitz U8				Tournament Mykonos Blitz U8
		date 2018-02-04	rnd 1	type Blitz	result 1	date 2018-02-04	rnd 1	type Blitz	result 1
		Opponent Maxongo, M (Milla)				Opponent Maxongo, M (Milla)

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	Beukes ,W (William)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Beukes ,W (William)	1	598.6	173.6	1	618.8	173.6	0	0	0	0	0	0
2	Slingers ,M (Marlon)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Slingers ,M (Marlon)	1	955.2	530.2	1	975.6	530.2	0	0	0	0	0	0
3	Witbooi ,Y (Yasmin)	1	1	425	1	1	425	0	0	0	0	0	0
3	Witbooi ,Y (Yasmin)	1	1088.4	1513.4	1	1072	1513.4	0	0	0	0	0	0
4	Tshivhule ,E (Eric)	1	1	425	1	1	425	0	0	0	0	0	0
4	Tshivhule ,E (Eric)	1	925	1350	1	925	1350	0	0	0	0	0	0
5	Goliath ,R (Raoul)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Goliath ,R (Raoul)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Meyer ,T (Tyrone)	1	1	425	1	1	425	0	0	0	0	0	0
6	Meyer ,T (Tyrone)	1	1248.1	1673.1	1	1258	1673.1	0	0	0	0	0	0
7	Van Bosch ,J (Janlou)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Van Bosch ,J (Janlou)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Perez ,R (Ruwaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Perez ,R (Ruwaan)	1	1155.8	730.8	1	1148.4	730.8	0	0	0	0	0	0
9	Malgas ,G (Gershwin)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Malgas ,G (Gershwin)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Robberts ,S (Stefan Johan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Robberts ,S (Stefan Johan)	1	681.5	256.5	1	693.2	256.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Jacobs, D (Duwayne)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms