Chess South Africa Ratings Database

PLAYER PAGE

Personal

Prinsloo, DL (Derrick Loek)

Chess SA id

1070109340

FIDE id

Date of birth

2007-01-04 (U20)

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	1273.4	1299.6	1130.7	1200
Raw rating	1258.6	1299.6	1130.7	1200
Weighted rating	1273.4	1299.6	1125.3	1200
Weighted performance	873.6	722	0	0
Floor	802.2	799.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	152.5	143.9	183	165.8
Highest rating	1316 2022-04-01	1309.5 2022-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1302.2 2024-02-01	1299.6 2024-02-01	1200 2018-02-01	1200 2024-02-01
Highest weighted rating	1302.2 2024-04-01	1299.6 2024-04-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1316 2022-04-01	1309.5 2022-04-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.7	0	0	0
New rating	1271.7	1299.6	1130.7	1200
Analysis
Rating	1273.4	1299.6	1130.7	1200
Raw rating	1258.6	1299.6	1130.7	1200
Weighted rating	1273.4	1299.6	1125.3
Weighted performance	873.6	722	0
K-factor	36	36	36	36
Floor	802.2	799.6	700	700
Max/Min rating change allowed	152.5	143.9	183	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	1258.6	1299.6	1130.7	1200
New weighted rating	1271.7	1299.6	1124.9	1200
New weighted performance	873.2	721.6	0	0
Temp new rating	1271.7	1299.6	1130.7	1200
Temp new rating +/-	-1.7	0	0	0
Final new rating +/-	-1.7	0	0	0
New rating	1271.7	1299.6	1130.7	1200
New K-factor	36	36	36	36
New floor	802.2	799.6	700	700

Item	Main	Standard	Rapid
	0	0	0
	5	0	5
	5	0	5
	0	0	0
	15	15	0
	10	10	0
History	111	96	15

Games since
	Main 10	Standard 0		Rapid 10		Blitz 0
Gender	Male
Age group	U20
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
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	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
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	5	2	40	-85	1214.2	1129.2
Standard	0	0	0	0	0	0
Rapid	5	2	40	-85	1214.2	1129.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	111	55.5	50	0	1121	1121
Standard	96	50.5	52.6	22.1	1107	1129.1
Rapid	15	5	33.33	-141.7	1210.8	1069.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1258.6	1299.6	1130.7	1200
2025-09-01	1258.6	1299.6	1130.7	1200
2025-08-01	1279.8	1299.6	1131.9	1200
2025-07-01	1279.8	1299.6	1131.9	1200
2025-06-01	1279.8	1299.6	1131.9	1200
2025-05-01	1279.8	1299.6	1131.9	1200
2025-04-01	1279.8	1299.6	1131.9	1200
2025-03-01	1279.8	1299.6	1131.9	1200
2025-02-01	1278.7	1299.6	1129.6	1200
2025-01-01	1254.2	1299.6	1078.8	1200
2024-12-01	1254.2	1299.6	1078.8	1200
2024-11-01	1254.2	1299.6	1078.8	1200
2024-10-01	1254.2	1299.6	1078.8	1200
2024-09-01	1254.2	1299.6	1078.8	1200
2024-08-01	1254.2	1299.6	1078.8	1200
2024-07-01	1302.2	1299.6	1178.4	1200
2024-06-01	1302.2	1299.6	1178.4	1200
2024-08-01	1302.2	1299.6	1178.4	1200
2024-04-01	1302.2	1299.6	1178.4	1200
2024-03-01	1302.2	1299.6	1178.4	1200
2024-02-01	1302.2	1299.6	1178.4	1200
2024-01-01	1302.2	1299.6	1178.4	1200
2023-12-01	1302.2	1299.6	1178.4	1200
2023-11-01	1302.2	1299.6	1178.4	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	Bojanala's Clash Of Schools 2025 (Championship Open)	2025-08-02	2025-08-02	Rapid	Bojanala Platina (NBR)	5	5	2	Yes	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 (Championship Open)	2025-08-02	2025-08-02	Rapid	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
2	Bojanala's Clash Of Schools - Secondary 2024 (Championship)	2024-07-27	2024-07-27	Rapid	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
3	RHS Know Thyself 2022 (C)	2022-04-23	2022-04-23	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
4	Vastrap 2022 (C)	2022-02-05	2022-02-05	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
5	Lebone II 2022 (C)	2022-02-12	2022-02-12	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
6	Brainstorm 2021 (U14+U16)	2021-06-05	2021-06-05	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
7	Back to the Board 2021 (U16)	2021-04-17	2021-04-17	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
8	Laerskool Proteapark 2020 (D)	2020-02-29	2020-02-29	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
9	Lebone II 2020 (U14)	2020-02-15	2020-02-15	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
10	2019 South African Junior Team Championships (U14B)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	0	Yes	Analysis
11	Selly Park 2019 (C)	2019-10-05	2019-10-05	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
12	Inter Region 2019 (U14 Open)	2019-10-19	2019-10-19	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
13	Lebone II 2019 (U14)	2019-09-14	2019-09-14	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
14	Klipkerk 2019 (U14)	2019-08-24	2019-08-24	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
15	Laerskool Rustenburg 2019 (U14)	2019-08-17	2019-08-17	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis
16	Grenville 2019 (U14)	2019-06-08	2019-06-08	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
17	2019 Super 12 Laerskole (Seniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	2	Yes	Analysis
18	Inter Regional Chess Championship 2019 (U14)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	1	Yes	Analysis
19	Laerskool Proteapark 2019 (D)	2019-05-18	2019-05-18	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
20	Hoerskool Rustenburg Skaak 2019 (U14)	2019-04-13	2019-04-13	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
21	Rustenburg Noord Primary Tournament 2019 (U14)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	4	1	Yes	Analysis
22	Hoerskool Brits Tournament 2019 (U14)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis

#	Games	Start				End
1	8	Tournament Lebone II 2022				Tournament Bojanala's Clash Of Schools - Secondary 2024
		date 2022-02-12	rnd 4	type Standard	result 0.5	date 2024-07-27	rnd 1	type Rapid	result 1
		Opponent Oosthuizen, T (Tiaan)				Opponent Mosito, M (Mandla)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Mostert, GS (Gideon)				Opponent Marx, HB (Heinrich)
3	4	Tournament Laerskool Rustenburg 2019				Tournament Klipkerk 2019
		date 2019-08-17	rnd 5	type Standard	result 0.5	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Haasbroek, X (Xander)				Opponent Molusi, K (Katlego)

#	Games	Start				End
1	7	Tournament Lebone II 2022				Tournament RHS Know Thyself 2022
		date 2022-02-12	rnd 4	type Standard	result 0.5	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Oosthuizen, T (Tiaan)				Opponent Nke, RB (Rebaone)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Mostert, GS (Gideon)				Opponent Marx, HB (Heinrich)
3	4	Tournament Laerskool Rustenburg 2019				Tournament Klipkerk 2019
		date 2019-08-17	rnd 5	type Standard	result 0.5	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Haasbroek, X (Xander)				Opponent Molusi, K (Katlego)

#	Games	Start				End
1	3	Tournament 2019 Super 12 Laerskole				Tournament Bojanala's Clash Of Schools - Secondary 2024
		date 2019-05-04	rnd 4	type Rapid	result 1	date 2024-07-27	rnd 1	type Rapid	result 1
		Opponent Hugo, J (Jeandre)				Opponent Mosito, M (Mandla)
2	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Mkrweqe, M (Mpho)				Opponent Mkrweqe, M (Mpho)
3	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Steyn, T (Tristan)				Opponent Steyn, T (Tristan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Lebone II 2022				Tournament Bojanala's Clash Of Schools - Secondary 2024
		date 2022-02-12	rnd 5	type Standard	result 1	date 2024-07-27	rnd 1	type Rapid	result 1
		Opponent Nkwe, T (Tumalano)				Opponent Mosito, M (Mandla)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Mostert, GS (Gideon)				Opponent Marx, HB (Heinrich)
3	4	Tournament Laerskool Proteapark 2019				Tournament Grenville 2019
		date 2019-05-18	rnd 4	type Standard	result 1	date 2019-06-08	rnd 2	type Standard	result 1
		Opponent Haasbroek, X (Xander)				Opponent Mogorosi, K (Kgalalelo)

#	Games	Start				End
1	6	Tournament Lebone II 2022				Tournament RHS Know Thyself 2022
		date 2022-02-12	rnd 5	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Nkwe, T (Tumalano)				Opponent Nke, RB (Rebaone)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Mostert, GS (Gideon)				Opponent Marx, HB (Heinrich)
3	4	Tournament Laerskool Proteapark 2019				Tournament Grenville 2019
		date 2019-05-18	rnd 4	type Standard	result 1	date 2019-06-08	rnd 2	type Standard	result 1
		Opponent Haasbroek, X (Xander)				Opponent Mogorosi, K (Kgalalelo)

#	Games	Start				End
1	3	Tournament 2019 Super 12 Laerskole				Tournament Bojanala's Clash Of Schools - Secondary 2024
		date 2019-05-04	rnd 4	type Rapid	result 1	date 2024-07-27	rnd 1	type Rapid	result 1
		Opponent Hugo, J (Jeandre)				Opponent Mosito, M (Mandla)
2	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Mkrweqe, M (Mpho)				Opponent Mkrweqe, M (Mpho)
3	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Steyn, T (Tristan)				Opponent Steyn, T (Tristan)

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	Tlhage ,O (Oratile)	4	2	0	4	2	0	0	0	0	0	0	0
1	Tlhage ,O (Oratile)	4	1016.1	1016.1	4	1002.9	1016.1	0	0	0	0	0	0
2	Le Roux ,N (Natacha)	3	3	425	3	3	425	0	0	0	0	0	0
2	Le Roux ,N (Natacha)	3	627.6	1052.6	3	572.5	1052.6	0	0	0	0	0	0
3	Combrinck ,LT (Louis Trichardt)	2	1	0	2	1	0	0	0	0	0	0	0
3	Combrinck ,LT (Louis Trichardt)	2	1106.2	1106.2	2	1087.1	1106.2	0	0	0	0	0	0
4	Jansen Van Vuuren ,L (Lourein)	2	2	425	2	2	425	0	0	0	0	0	0
4	Jansen Van Vuuren ,L (Lourein)	2	1095.3	1520.3	2	1086.5	1520.3	0	0	0	0	0	0
5	Mogorosi ,K (Kgalalelo)	2	2	425	2	2	425	0	0	0	0	0	0
5	Mogorosi ,K (Kgalalelo)	2	1088.5	1513.5	2	1067.2	1513.5	0	0	0	0	0	0
6	Mahuma ,T (Thebe)	2	1	0	2	1	0	0	0	0	0	0	0
6	Mahuma ,T (Thebe)	2	645.4	645.4	2	670.8	645.4	0	0	0	0	0	0
7	Haasbroek ,X (Xander)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Haasbroek ,X (Xander)	2	918.4	1130.9	2	875.8	1130.9	0	0	0	0	0	0
8	Molusi ,K (Katlego)	2	1	0	2	1	0	0	0	0	0	0	0
8	Molusi ,K (Katlego)	2	1279.2	1279.2	2	1280.7	1279.2	0	0	0	0	0	0
9	Moagi ,Z (Zacharia)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Moagi ,Z (Zacharia)	2	1180.6	755.6	2	1176.6	755.6	0	0	0	0	0	0
10	Ngubeni ,N (Nhlanhla)	2	1	0	2	1	0	0	0	0	0	0	0
10	Ngubeni ,N (Nhlanhla)	2	1062.6	1062.6	2	1035.6	1062.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Prinsloo, DL (Derrick Loek)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms