Chess South Africa Ratings Database

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Personal

Morkel, DJ (Douglas Jonathan)

Chess SA id

110093302

FIDE id

Date of birth

2010-06-02 (U18)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1309.1	1260.6	1213.7	1200
Raw rating	1305.9	1260.6	1213.7	1200
Weighted rating	1309.1	1260.6	1210.9	1200
Weighted performance	995.1	823.1	0	0
Floor	816.9	811.6	713.7	700
K-factor	36	36	36	36
Min/Max rating change allowed	142.6	152.1	162.6	165.8
Highest rating	1322.7 2023-03-01	1317.8 2023-03-01	1213.7 2025-09-01	1200 2018-10-01
Highest raw rating	1316.9 2020-03-01	1311.6 2020-03-01	1213.7 2025-09-01	1200 2024-02-01
Highest weighted rating	1316.9 2025-07-01	1311.6 2021-09-01	1209.6 2025-09-01	1200 2018-10-01
Highest weighted performance	1322.7 2023-03-01	1317.8 2023-03-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.3	0	0	0
New rating	1308.7	1260.6	1213.7	1200
Analysis
Rating	1309.1	1260.6	1213.7	1200
Raw rating	1305.9	1260.6	1213.7	1200
Weighted rating	1309.1	1260.6	1210.9
Weighted performance	995.1	823.1	0
K-factor	36	36	36	36
Floor	816.9	811.6	713.7	700
Max/Min rating change allowed	142.6	152.1	162.6	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	1305.9	1260.6	1213.7	1200
New weighted rating	1308.7	1260.6	1211.1	1200
New weighted performance	986.6	814.8	0	0
Temp new rating	1308.7	1260.6	1213.7	1200
Temp new rating +/-	-0.3	0	0	0
Final new rating +/-	-0.3	0	0	0
New rating	1308.7	1260.6	1213.7	1200
New K-factor	36	36	36	36
New floor	816.9	811.6	713.7	700

Item	Main	Standard	Rapid
	0	0	0
	5	0	5
	0	0	0
	25	20	5
	30	30	0
	4	4	0
History	182	162	20

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U16
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	5	2.5	50	0	1269.6	1269.6
Standard	0	0	0	0	0	0
Rapid	5	2.5	50	0	1269.6	1269.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	177	98.5	55.65	48	1114.8	1162.8
Standard	157	87.5	55.73	48.7	1105.2	1154
Rapid	20	11	55	42.5	1189.7	1232.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1305.9	1260.6	1213.7	1200
2025-11-30	1305.9	1260.6	1213.7	1200
2025-11-01	1305.9	1260.6	1213.7	1200
2025-09-30	1305.9	1260.6	1213.7	1200
2025-09-01	1305.9	1260.6	1213.7	1200
2025-08-01	1310.9	1260.6	1209.2	1200
2025-07-01	1310.9	1260.6	1209.2	1200
2025-06-01	1310.9	1260.6	1209.2	1200
2025-05-01	1310.9	1260.6	1209.2	1200
2025-04-01	1310.9	1260.6	1209.2	1200
2025-03-01	1310.9	1260.6	1209.2	1200
2025-02-01	1310.9	1260.6	1209.2	1200
2025-01-01	1310.9	1260.5	1209.2	1200
2024-12-01	1310.9	1260.5	1209.2	1200
2024-11-01	1310.9	1260.5	1209.2	1200
2024-10-01	1310.9	1260.5	1209.2	1200
2024-09-01	1310.9	1260.5	1209.2	1200
2024-11-01	1310.9	1260.5	1209.2	1200
2024-07-01	1310.9	1260.5	1209.2	1200
2024-06-01	1310.9	1260.5	1209.2	1200
2024-05-01	1310.9	1260.5	1209.2	1200
2024-04-01	1310.9	1260.5	1209.2	1200
2024-03-01	1310.9	1260.5	1209.2	1200
2024-02-01	1310.9	1260.5	1209.2	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	Bojanala's Clash Of Schools 2025 (U15)	2025-08-02	2025-08-02	Rapid	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
2	Bojanala School League 2023 (Primary School Open)	2023-08-19	2023-08-19	Rapid	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
3	Grenswag's Community Battle 2023 (Rooks)	2023-04-22	2023-04-22	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
4	Schoemies Kings & Queens 2023 (Rooks)	2023-03-18	2023-03-18	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
5	One For The Ages 2023 (U14)	2023-02-18	2023-02-18	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
6	Harties Wolf Pack 2023 (Rooks)	2023-01-21	2023-01-21	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
7	Larries The Final Wild Card Tournament 2022 (Bishops)	2022-09-17	2022-09-17	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
8	Bojanala Chess Federation Clash of Schools 2022 (PS Championship)	2022-07-22	2022-07-22	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
9	2nd One For The Ages 2022 (U14)	2022-07-30	2022-07-30	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
10	RHS Know Thyself 2022 (C)	2022-04-23	2022-04-23	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
11	Lebone II 2022 (C)	2022-02-12	2022-02-12	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
12	The Meridian 2022 (U14)	2022-01-22	2022-01-22	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
13	Spring at The King`s Gate 2021 (C)	2021-09-11	2021-09-11	Standard	Bojanala Platina (NBR)	5	4	1	Yes	Analysis
14	Hoerskool Brits Toernooi 2020 (U12)	2020-03-14	2020-03-14	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
15	Laerskool Proteapark 2020 (D)	2020-02-29	2020-02-29	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
16	Lebone II 2020 (U12)	2020-02-15	2020-02-15	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
17	2019 South African Junior Team Championships (U10A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
18	Inter Region 2019 (U10 Open)	2019-10-19	2019-10-19	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
19	Laerskool Brits 2019 (U10)	2019-08-31	2019-08-31	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
20	Laerskool Rustenburg 2019 (U10)	2019-08-17	2019-08-17	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
21	Grenville 2019 (U10)	2019-06-08	2019-06-08	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
22	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	2	Yes	Analysis
23	Inter Regional Chess Championship 2019 (U10)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
24	Hoerskool Rustenburg Skaak 2019 (U10)	2019-04-13	2019-04-13	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
25	Laerskool Vastrap Tournament 2019 (E)	2019-02-23	2019-02-23	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
26	Fields College Open 2019 (U10)	2019-02-02	2019-02-02	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
27	Hoerskool Brits Tournament 2019 (U10)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
28	South African Junior Team Championships 2018 (U10C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	3.5	Yes	Analysis
29	Bojanala Regionals 2018 (U10)	2018-09-15	2018-09-15	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
30	Laerskool Brits Tournament 2018 (U10)	2018-08-04	2018-08-04	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
31	2018 Super 12 (Junior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	2.5	Yes	Analysis
32	Laerskool Rustenburg 2018 (D)	2018-03-24	2018-03-24	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
33	Hoerskool Brits 2018 (U10)	2018-03-17	2018-03-17	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
34	Laerskool Vastrap 2018 (U10)	2018-02-03	2018-02-03	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
35	Laerskool Rustenburg Noord Primary 2018 (D)	2018-02-24	2018-02-24	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Laerskool Proteapark 2020				Tournament Hoerskool Brits Toernooi 2020
		date 2020-02-29	rnd 3	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuuren, L (Lourein)				Opponent Smit, A (Anika)
2	5	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Masilo, K (Khumo)				Opponent Myburgh, Z (Zandre)
3	5	Tournament Laerskool Vastrap Tournament 2019				Tournament Hoerskool Rustenburg Skaak 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-04-13	rnd 3	type Standard	result 1
		Opponent Masilela, K (Kholwa-Ku-Zimu)				Opponent Molefinyane, O (Omatla)

#	Games	Start				End
1	6	Tournament Laerskool Proteapark 2020				Tournament Hoerskool Brits Toernooi 2020
		date 2020-02-29	rnd 3	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuuren, L (Lourein)				Opponent Smit, A (Anika)
2	5	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Masilo, K (Khumo)				Opponent Myburgh, Z (Zandre)
3	5	Tournament Laerskool Vastrap Tournament 2019				Tournament Hoerskool Rustenburg Skaak 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-04-13	rnd 3	type Standard	result 1
		Opponent Masilela, K (Kholwa-Ku-Zimu)				Opponent Molefinyane, O (Omatla)

#	Games	Start				End
1	3	Tournament Bojanala School League 2023				Tournament Bojanala School League 2023
		date 2023-08-19	rnd 3	type Rapid	result 1	date 2023-08-19	rnd 5	type Rapid	result 1
		Opponent Naidoo, D (Danika)				Opponent Byliefeldt, M (Mienke)
2	2	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 0.5
		Opponent Lin, W (Weihao)				Opponent Makwe, R (Regoikantse)
3	2	Tournament 2019 Super 12 Laerskole				Tournament Bojanala School League 2023
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2023-08-19	rnd 1	type Rapid	result 1
		Opponent Marais, K (Karla)				Opponent Van Schalkwyk, J (Jurgens)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Laerskool Proteapark 2020				Tournament Hoerskool Brits Toernooi 2020
		date 2020-02-29	rnd 3	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuuren, L (Lourein)				Opponent Smit, A (Anika)
2	5	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Masilo, K (Khumo)				Opponent Myburgh, Z (Zandre)
3	5	Tournament Laerskool Vastrap Tournament 2019				Tournament Hoerskool Rustenburg Skaak 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-04-13	rnd 3	type Standard	result 1
		Opponent Masilela, K (Kholwa-Ku-Zimu)				Opponent Molefinyane, O (Omatla)

#	Games	Start				End
1	6	Tournament Laerskool Proteapark 2020				Tournament Hoerskool Brits Toernooi 2020
		date 2020-02-29	rnd 3	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuuren, L (Lourein)				Opponent Smit, A (Anika)
2	5	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Masilo, K (Khumo)				Opponent Myburgh, Z (Zandre)
3	5	Tournament Laerskool Vastrap Tournament 2019				Tournament Hoerskool Rustenburg Skaak 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-04-13	rnd 3	type Standard	result 1
		Opponent Masilela, K (Kholwa-Ku-Zimu)				Opponent Molefinyane, O (Omatla)

#	Games	Start				End
1	3	Tournament Bojanala School League 2023				Tournament Bojanala School League 2023
		date 2023-08-19	rnd 3	type Rapid	result 1	date 2023-08-19	rnd 5	type Rapid	result 1
		Opponent Naidoo, D (Danika)				Opponent Byliefeldt, M (Mienke)
2	2	Tournament 2019 Super 12 Laerskole				Tournament Bojanala School League 2023
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2023-08-19	rnd 1	type Rapid	result 1
		Opponent Marais, K (Karla)				Opponent Van Schalkwyk, J (Jurgens)
3	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 4	type Rapid	result 1
		Opponent Lin, W (Weihao)				Opponent Lin, W (Weihao)

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	Roos ,J (Justin)	6	1	-283.3	6	1	-283.3	0	0	0	0	0	0
1	Roos ,J (Justin)	6	1367.7	1084.3	6	1356.8	1084.3	0	0	0	0	0	0
2	Van Schalkwyk ,J (Jurgens)	6	5	283.3	5	4	255	1	1	425	0	0	0
2	Van Schalkwyk ,J (Jurgens)	6	1165.6	1449	5	1108.6	1420.6	1	1317.2	1590.6	0	0	0
3	Mostert ,PJ (Pieter)	5	2	-85	4	1	-212.5	1	1	425	0	0	0
3	Mostert ,PJ (Pieter)	5	1235.2	1150.2	4	1213.6	1022.7	1	1200	1660.2	0	0	0
4	Jansen Van Vuuren ,L (Lourein)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
4	Jansen Van Vuuren ,L (Lourein)	4	1077.2	1289.8	4	1054.5	1289.8	0	0	0	0	0	0
5	Molefinyane ,O (Omatla)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
5	Molefinyane ,O (Omatla)	4	956.1	1168.6	4	941	1168.6	0	0	0	0	0	0
6	Masilela ,K (Kholwa-Ku-Zimu)	3	3	425	3	3	425	0	0	0	0	0	0
6	Masilela ,K (Kholwa-Ku-Zimu)	3	980.7	1405.7	3	975.6	1405.7	0	0	0	0	0	0
7	Changara ,A (Adrian Tafara)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
7	Changara ,A (Adrian Tafara)	3	1182.1	1323.8	3	1201.7	1323.8	0	0	0	0	0	0
8	Byliefeldt ,L (Leroux)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
8	Byliefeldt ,L (Leroux)	3	1210.9	1069.2	3	1206.3	1069.2	0	0	0	0	0	0
9	Rheeders ,JG (Johan Gerhardus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
9	Rheeders ,JG (Johan Gerhardus)	3	748.5	606.8	3	748.9	606.8	0	0	0	0	0	0
10	Richter ,XR (Xavier Reghardt)	2	2	425	2	2	425	0	0	0	0	0	0
10	Richter ,XR (Xavier Reghardt)	2	1085.5	1510.5	2	1062	1510.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Morkel, DJ (Douglas Jonathan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms