Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grobler, J (Juan-Jacques)

Chess SA id

1090111611

FIDE id

Date of birth

2009-11-10 (U18)

Gender

Male

Region

Chess South Africa (CSA)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-05-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1242.6	1200	1266.5	1200
Raw rating	1242.6	1200	1266.5	1200
Weighted rating	1242.6	1200	1266.5	1200
Weighted performance	0	0	0	0
Floor	742.6	700	766.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.1	165.8	150.8	165.8
Highest rating	1306.9 2019-05-01	1200 2018-10-01	1348.3 2019-05-01	1200 2018-10-01
Highest raw rating	1242.6 2024-02-01	1200 2024-02-01	1266.5 2024-02-01	1200 2024-02-01
Highest weighted rating	1242.6 2024-02-01	1200 2018-10-01	1266.5 2025-02-01	1200 2018-10-01
Highest weighted performance	1306.9 2019-05-01	1200 2024-02-01	1348.3 2019-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1242.6	1200	1266.5	1200
Analysis
Rating	1242.6	1200	1266.5	1200
Raw rating	1242.6	1200	1266.5	1200
Weighted rating	1242.6	1200	1266.5
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	742.6	700	766.5	700
Max/Min rating change allowed	156.1	165.8	150.8	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	1242.6	1200	1266.5	1200
New weighted rating	1242.6	1200	1266.5	1200
New weighted performance	0	0	0	0
Temp new rating	1242.6	1200	1266.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1242.6	1200	1266.5	1200
New K-factor	36	36	36	36
New floor	742.6	700	766.5	700

Item	Main	Rapid
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	10	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Chess South Africa (CSA)
Province
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	10	7.5	75	212.5	1142.4	1354.9
Standard	0	0	0	0	0	0
Rapid	10	7.5	75	212.5	1142.4	1354.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1242.6	1200	1266.5	1200
2025-09-01	1242.6	1200	1266.5	1200
2025-08-01	1242.6	1200	1266.5	1200
2025-07-01	1242.6	1200	1266.5	1200
2025-06-01	1242.6	1200	1266.5	1200
2025-05-01	1242.6	1200	1266.5	1200
2025-04-01	1242.6	1200	1266.5	1200
2025-03-01	1242.6	1200	1266.5	1200
2025-02-01	1242.6	1200	1266.5	1200
2025-01-01	1242.6	1200	1266.5	1200
2024-12-01	1242.6	1200	1266.5	1200
2024-11-01	1242.6	1200	1266.5	1200
2024-10-01	1242.6	1200	1266.5	1200
2024-09-01	1242.6	1200	1266.5	1200
2024-08-01	1242.6	1200	1266.5	1200
2024-07-01	1242.6	1200	1266.5	1200
2024-06-01	1242.6	1200	1266.5	1200
2024-08-01	1242.6	1200	1266.5	1200
2024-04-01	1242.6	1200	1266.5	1200
2024-03-01	1242.6	1200	1266.5	1200
2024-02-01	1242.6	1200	1266.5	1200
2024-01-01	1242.6	1200	1266.5	1200
2023-12-01	1242.6	1200	1266.5	1200
2023-11-01	1242.6	1200	1266.5	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	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	4.5	Yes	Analysis
2	Drakensig Primary 2019 (U12)	2019-03-09	2019-03-09	Rapid	Mopani (LMG)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Drakensig Primary 2019				Tournament 2019 Super 12 Laerskole
		date 2019-03-09	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 0.5
		Opponent Oosthuizen, W (Werner)				Opponent Du Preez, M (Morne)
2	3	Tournament Drakensig Primary 2019				Tournament Drakensig Primary 2019
		date 2019-03-09	rnd 1	type Rapid	result 1	date 2019-03-09	rnd 3	type Rapid	result 0.5
		Opponent Pretorius, M (Miya)				Opponent Matembane, K (Kabelo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Drakensig Primary 2019				Tournament 2019 Super 12 Laerskole
		date 2019-03-09	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 0.5
		Opponent Oosthuizen, W (Werner)				Opponent Du Preez, M (Morne)
2	3	Tournament Drakensig Primary 2019				Tournament Drakensig Primary 2019
		date 2019-03-09	rnd 1	type Rapid	result 1	date 2019-03-09	rnd 3	type Rapid	result 0.5
		Opponent Pretorius, M (Miya)				Opponent Matembane, K (Kabelo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Drakensig Primary 2019				Tournament 2019 Super 12 Laerskole
		date 2019-03-09	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 4	type Rapid	result 1
		Opponent Oosthuizen, W (Werner)				Opponent Van Niekerk, A (A.J.)
2	1	Tournament Drakensig Primary 2019				Tournament Drakensig Primary 2019
		date 2019-03-09	rnd 1	type Rapid	result 1	date 2019-03-09	rnd 1	type Rapid	result 1
		Opponent Pretorius, M (Miya)				Opponent Pretorius, M (Miya)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Drakensig Primary 2019				Tournament 2019 Super 12 Laerskole
		date 2019-03-09	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 4	type Rapid	result 1
		Opponent Oosthuizen, W (Werner)				Opponent Van Niekerk, A (A.J.)
2	1	Tournament Drakensig Primary 2019				Tournament Drakensig Primary 2019
		date 2019-03-09	rnd 1	type Rapid	result 1	date 2019-03-09	rnd 1	type Rapid	result 1
		Opponent Pretorius, M (Miya)				Opponent Pretorius, M (Miya)

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	Hill ,A (Andrew)	1	1	425	0	0	0	1	1	425	0	0	0
1	Hill ,A (Andrew)	1	1174.1	1599.1	0	0	0	1	1156.8	1599.1	0	0	0
2	Thompson ,S (Skyla)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Thompson ,S (Skyla)	1	1137.1	712.1	0	0	0	1	1098.8	712.1	0	0	0
3	Mpangane ,N (Naomi)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
3	Mpangane ,N (Naomi)	1	1200	1200	0	0	0	1	1200	1200	0	0	0
4	Oosthuizen ,W (Werner)	1	1	425	0	0	0	1	1	425	0	0	0
4	Oosthuizen ,W (Werner)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
5	Pretorius ,M (Miya)	1	1	425	0	0	0	1	1	425	0	0	0
5	Pretorius ,M (Miya)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	Matabane ,K (Kabelo)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
6	Matabane ,K (Kabelo)	1	1200	1200	0	0	0	1	1200	1200	0	0	0
7	Bronkhorst ,Z (Zulieke)	1	1	425	0	0	0	1	1	425	0	0	0
7	Bronkhorst ,Z (Zulieke)	1	1214.3	1639.3	0	0	0	1	1200	1639.3	0	0	0
8	Van Niekerk ,A (A.J.)	1	1	425	0	0	0	1	1	425	0	0	0
8	Van Niekerk ,A (A.J.)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	De Jager ,J (Joshua)	1	1	425	0	0	0	1	1	425	0	0	0
9	De Jager ,J (Joshua)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Du Preez ,M (Morne)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
10	Du Preez ,M (Morne)	1	698.7	698.7	0	0	0	1	543.6	698.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Grobler, J (Juan-Jacques)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms