Chess South Africa Ratings Database

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Personal

Grobler, R (Rowan)

Chess SA id

1110140037

FIDE id

14376822

Date of birth

2011-08-16 (U16)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1538.1	1535.2	1256.4	1241.4
Raw rating	1477.5	1472.7	1256.4	1241.4
Weighted rating	1538.1	1535.2	1245.1	1209.5
Weighted performance	1404.6	1411.8	0	0
Floor	1134.1	1128.3	756.4	741.4
K-factor	28	28	36	36
Min/Max rating change allowed	111.7	112.4	153	156.3
Highest rating	1637.2 2022-04-01	1637.2 2022-04-01	1352.5 2024-07-01	1241.4 2025-11-01
Highest raw rating	1634.1 2025-04-01	1628.3 2025-04-01	1256.4 2025-06-01	1241.4 2025-11-01
Highest weighted rating	1538.1 2026-01-01	1628.3 2024-10-01	1256.4 2018-10-01	1203.3 2025-11-01
Highest weighted performance	1637.2 2022-04-01	1637.2 2022-04-01	1352.5 2024-07-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2	-2	0	0
New rating	1536	1533.2	1256.4	1241.4
Analysis
Rating	1538.1	1535.2	1256.4	1241.4
Raw rating	1477.5	1472.7	1256.4	1241.4
Weighted rating	1538.1	1535.2	1245.1
Weighted performance	1404.6	1411.8	0
K-factor	28	28	36	36
Floor	1134.1	1128.3	756.4	741.4
Max/Min rating change allowed	111.7	112.4	153	156.3
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	1477.5	1472.7	1256.4	1241.4
New weighted rating	1536	1533.2	1247.6	1212.4
New weighted performance	1395.3	1402.5	0	0
Temp new rating	1536	1533.2	1256.4	1241.4
Temp new rating +/-	-2	-2	0	0
Final new rating +/-	-2	-2	0	0
New rating	1536	1533.2	1256.4	1241.4
New K-factor	28	28	36	36
New floor	1134.1	1128.3	756.4	741.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	47	33	5	9
	53	48	5	0
	41	36	5	0
	56	56	0	0
	0	0	0	0
History	197	173	15	9

Games since
	Main 110	Standard 91		Rapid 10		Blitz 9
Gender	Male
Age group	U16
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	905		74		63
Male	798		64		55
U16	103		10		9
U16 Male	89		10		9
Standard
	RSA		Province		Region
Overall	792		74		61
Male	699		66		55
U16	97		10		9
U16 Male	83		10		9
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	47	27.5	58.51	72.3	1499.6	1572
Standard	33	19.5	59.09	77.3	1512	1589.3
Rapid	5	3	60	85	1397.4	1482.4
Blitz	9	5	55.56	47.2	1511	1558.2
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	197	121.5	61.68	99.2	1356.2	1455.4
Standard	173	107.5	62.14	103.2	1347.8	1451
Rapid	15	9	60	85	1359.7	1444.7
Blitz	9	5	55.56	47.2	1511	1558.2

Date	Main	Standard	Rapid	Blitz
2026-01-01	1477.5	1472.7	1256.4	1241.4
2025-11-30	1551.4	1562.3	1256.4	1241.4
2025-11-01	1551.4	1562.3	1256.4	1241.4
2025-09-30	1601.6	1610.2	1256.4	1200
2025-09-01	1601.6	1610.2	1256.4	1200
2025-08-01	1601.6	1610.2	1256.4	1200
2025-07-01	1601.6	1610.2	1256.4	1200
2025-06-01	1601.6	1610.2	1256.4	1200
2025-05-01	1634.1	1628.3	1247.2	1200
2025-04-01	1634.1	1628.3	1247.2	1200
2025-03-01	1513.4	1499.2	1247.2	1200
2025-02-01	1440.8	1413	1247.2	1200
2025-01-01	1440.8	1413	1247.2	1200
2024-12-01	1440.8	1413	1247.2	1200
2024-11-01	1440.8	1413	1247.2	1200
2024-10-01	1440.8	1413	1247.2	1200
2024-09-01	1526.6	1515.4	1247.2	1200
2024-11-01	1555.1	1547.1	1247.2	1200
2024-07-01	1471.3	1469.9	1145.2	1200
2024-06-01	1410	1407.2	1145.2	1200
2024-05-01	1412.7	1411	1145.2	1200
2024-04-01	1387.5	1392.3	1145.2	1200
2024-03-01	1387.5	1392.3	1145.2	1200
2024-02-01	1339.3	1353.4	1145.2	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	2025 Mzansi Individual Championships (U16 Open)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U16 Open)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
3	Bojanala's Merry ChessMas 2025 (Rooks)	2025-11-29	2025-11-29	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
4	Bojanala's Kings & Queens 2025 (Blitz)	2025-10-25	2025-10-25	Blitz	Bojanala Platina (NBR)	9	9	5	Yes	Analysis
5	Bojanala's Battle Of Mount Cambridge 2025 (Rooks)	2025-10-11	2025-10-11	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
6	Bojanala's FIDE On The Orion Express 2025 (Queens)	2025-10-03	2025-10-05	Standard	Bojanala Platina (NBR)	6	5	0	Yes	Analysis
7	Spartan Bishops Championships Elite 2025 (U16)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	4	2.5	Yes	Analysis
8	Robday Bergsig Sport Festival 2025 (Juniors)	2025-05-03	2025-05-03	Rapid	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
9	Bojanala's Waterkloof - The Superior One 2025 (Rooks)	2025-03-15	2025-03-15	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
10	Bojanala Circuit Championships 1 of 4 2025 (U16)	2025-03-01	2025-03-01	Standard	Bojanala Platina (NBR)	5	4	3	Yes	Analysis
11	Bojanala's Battle In The Kloof 2025 (Rooks)	2025-02-15	2025-02-15	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
12	Bojanala Closed Chess Championships 2025 (U14)	2025-01-31	2025-02-02	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
13	Bojanala's Battle In The Kloof 2024 (Queens)	2024-09-21	2024-09-21	Standard	Bojanala Platina (NBR)	5	5	0	Yes	Analysis
14	Bojanala Circuit Championships 3 of 4 2024 (U16)	2024-09-14	2024-09-14	Standard	Bojanala Platina (NBR)	5	4	1	Yes	Analysis
15	Bojanala's FIDE In The Sparkling Waters 2024 (Rooks)	2024-08-16	2024-08-18	Standard	Bojanala Platina (NBR)	6	5	3	Yes	Analysis
16	Bojanala's Clash Of Schools - Secondary 2024 (U17)	2024-07-27	2024-07-27	Rapid	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
17	Bojanala's Clash Of Schools 2024 (Championship)	2024-07-20	2024-07-20	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
18	Bojanala Circuit Championship 2 of 4 2024 (U14)	2024-06-15	2024-06-15	Standard	Bojanala Platina (NBR)	5	5	4.5	Yes	Analysis
19	Bojanala Circuit Championship 1 of 4 2024 (U14)	2024-05-25	2024-05-25	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
20	Bojanala Olienpark's One For The Ages 2024 (Bishops)	2024-04-20	2024-04-20	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
21	Bojanala's Rating Express 2024 (Bishops)	2024-04-06	2024-04-06	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
22	Bojanala Closed Chess Championships Finals 2024 (U14)	2024-02-09	2024-02-11	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
23	Bojanala Closed Chess Championships Stage 1 2024 (U14)	2024-01-27	2024-01-27	Standard	Bojanala Platina (NBR)	5	4	3.5	Yes	Analysis
24	2023 Cross Border Chess Championships Gaborone vs Bojanala	2023-12-14	2023-12-16	Standard	Botswana (BOT)	5	5	3	Yes	Analysis
25	Bojanala's Merry ChessMas 2023 (Rooks)	2023-12-09	2023-12-09	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
26	Bojanala's Rosewood 2023 (Rooks)	2023-08-12	2023-08-12	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
27	Bojanala School League 2023 (Primary School Open)	2023-08-19	2023-08-19	Rapid	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
28	Bojanala's FIDE in the Sparkling Waters 2023 (Rooks)	2023-07-28	2023-07-30	Standard	Bojanala Platina (NBR)	6	6	2.5	Yes	Analysis
29	Grenswag's Community Battle 2023 (Rooks)	2023-04-22	2023-04-22	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
30	Schoemies Kings & Queens 2023 (Rooks)	2023-03-18	2023-03-18	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
31	One For The Ages 2023 (U14)	2023-02-18	2023-02-18	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
32	2022 South African Junior Team Chess Championships (U12 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
33	West Rand vs Bojanala 2022 (U12A)	2022-11-05	2022-11-05	Standard	Bojanala Platina (NBR)	6	6	3	Yes	Analysis
34	FIDE at The King`s Gate 2.0 2022 (C)	2022-10-22	2022-10-22	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
35	Larries The Final Wild Card Tournament 2022 (U12)	2022-09-17	2022-09-17	Standard	Bojanala Platina (NBR)	5	4	4	Yes	Analysis
36	Bojanala SAJCC Trials 2022 (U12)	2022-09-23	2022-09-23	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
37	Bojanala Chess Federation Wildcards 2022 (U12)	2022-08-20	2022-08-20	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
38	Bojanala Chess Federation Clash of Schools 2022 (PS Championship)	2022-07-22	2022-07-22	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
39	2nd One For The Ages 2022 (U12)	2022-07-30	2022-07-30	Standard	Bojanala Platina (NBR)	5	4	3	Yes	Analysis
40	One For The Ages 2022 (U12)	2022-07-16	2022-07-16	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
41	Bojanala Fields Rapid-Blitz-Blindfold Champions 2022 (Development)	2022-05-28	2022-05-28	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
42	RHS Know Thyself 2022 (Development)	2022-04-23	2022-04-23	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis

#	Games	Start				End
1	13	Tournament RHS Know Thyself 2022				Tournament One For The Ages 2022
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-07-16	rnd 3	type Standard	result 1
		Opponent Nkosi, O (Onthatile)				Opponent Van Staden, N (Nathan)
2	8	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-08-17	rnd 3	type Standard	result 1
		Opponent Molokwane, G (Gaona)				Opponent Ramaboa, T (Thando)
3	8	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-06-15	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent De Jager, L (Luan)				Opponent Nkabinde, N (Nkazimulo)

#	Games	Start				End
1	13	Tournament RHS Know Thyself 2022				Tournament One For The Ages 2022
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-07-16	rnd 3	type Standard	result 1
		Opponent Nkosi, O (Onthatile)				Opponent Van Staden, N (Nathan)
2	8	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-06-15	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent De Jager, L (Luan)				Opponent Nkabinde, N (Nkazimulo)
3	8	Tournament 2023 Cross Border Chess Championships Gaborone vs Bojanala				Tournament Bojanala Closed Chess Championships Finals 2024
		date 2023-12-16	rnd 5	type Standard	result 1	date 2024-02-10	rnd 3	type Standard	result 1
		Opponent Kaemana, Atlang				Opponent Roos, J (Justin)

#	Games	Start				End
1	6	Tournament Bojanala's Clash Of Schools - Secondary 2024				Tournament Robday Bergsig Sport Festival 2025
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Phadi, T (Teboho)				Opponent Potgieter, R (Reinhardt)
2	2	Tournament Robday Bergsig Sport Festival 2025				Tournament Robday Bergsig Sport Festival 2025
		date 2025-05-03	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 5	type Rapid	result 1
		Opponent Vermaak, J (Joshua)				Opponent Ramasika, T (Tshegofatso)
3	1	Tournament Bojanala School League 2023				Tournament Bojanala School League 2023
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2023-08-19	rnd 1	type Rapid	result 1
		Opponent Terblanche, J (Johann)				Opponent Terblanche, J (Johann)

No games found.

#	Games	Start				End

#	Games	Start				End
1	13	Tournament RHS Know Thyself 2022				Tournament One For The Ages 2022
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-07-16	rnd 3	type Standard	result 1
		Opponent Nkosi, O (Onthatile)				Opponent Van Staden, N (Nathan)
2	8	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-08-17	rnd 3	type Standard	result 1
		Opponent Molokwane, G (Gaona)				Opponent Ramaboa, T (Thando)
3	7	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 1	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Hannemann, D (Daniel)				Opponent Gouws, K (Karah)

#	Games	Start				End
1	13	Tournament RHS Know Thyself 2022				Tournament One For The Ages 2022
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-07-16	rnd 3	type Standard	result 1
		Opponent Nkosi, O (Onthatile)				Opponent Van Staden, N (Nathan)
2	7	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament 2nd One For The Ages 2022
		date 2022-07-22	rnd 1	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Hannemann, D (Daniel)				Opponent Gouws, K (Karah)
3	6	Tournament Larries The Final Wild Card Tournament 2022				Tournament Bojanala SAJCC Trials 2022
		date 2022-09-17	rnd 2	type Standard	result 1	date 2022-09-23	rnd 2	type Standard	result 1
		Opponent Myburgh, B (Braydan)				Opponent Botha, J (Johannes Cornelis)

#	Games	Start				End
1	6	Tournament Bojanala's Clash Of Schools - Secondary 2024				Tournament Robday Bergsig Sport Festival 2025
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Phadi, T (Teboho)				Opponent Potgieter, R (Reinhardt)
2	2	Tournament Robday Bergsig Sport Festival 2025				Tournament Robday Bergsig Sport Festival 2025
		date 2025-05-03	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 5	type Rapid	result 1
		Opponent Vermaak, J (Joshua)				Opponent Ramasika, T (Tshegofatso)
3	1	Tournament Bojanala School League 2023				Tournament Bojanala School League 2023
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2023-08-19	rnd 1	type Rapid	result 1
		Opponent Terblanche, J (Johann)				Opponent Terblanche, J (Johann)

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	Botha ,J (Johannes Cornelis)	10	4.5	-42.5	8	4.5	53.1	1	0	-425	1	0	-425
1	Botha ,J (Johannes Cornelis)	10	1436.1	1393.6	8	1421.8	1489.2	1	1200	1011.1	1	1283.5	1011.1
2	Roos ,J (Justin)	9	3	-141.7	8	3	-106.2	1	0	-425	0	0	0
2	Roos ,J (Justin)	9	1494.2	1352.6	8	1499.7	1388	1	1200	1069.2	0	0	0
3	Terblanche ,J (Johann)	6	4	141.7	4	3	212.5	2	1	0	0	0	0
3	Terblanche ,J (Johann)	6	1447.1	1588.7	4	1441.7	1659.6	2	1292.2	1447.1	0	0	0
4	Potgieter ,R (Reinhardt)	5	4	255	4	3	212.5	1	1	425	0	0	0
4	Potgieter ,R (Reinhardt)	5	1196.4	1451.4	4	1172.3	1408.9	1	1156	1621.4	0	0	0
5	Changara ,A (Adiel Tavonga)	5	4	255	4	4	425	1	0	-425	0	0	0
5	Changara ,A (Adiel Tavonga)	5	1356.5	1611.5	4	1350.3	1781.5	1	1181.6	931.5	0	0	0
6	Changara ,A (Alvis Tafadzwa)	5	1.5	-170	4	1.5	-106.2	0	0	0	1	0	-425
6	Changara ,A (Alvis Tafadzwa)	5	1496.5	1326.5	4	1454.9	1390.2	0	0	0	1	1303.2	1071.5
7	Nortman ,WJ (Wilhelmus Johan)	4	2	0	4	2	0	0	0	0	0	0	0
7	Nortman ,WJ (Wilhelmus Johan)	4	1295.9	1295.9	4	1279.6	1295.9	0	0	0	0	0	0
8	Jansen Van Vuuren ,M (Mari)	4	4	425	4	4	425	0	0	0	0	0	0
8	Jansen Van Vuuren ,M (Mari)	4	1265.5	1690.5	4	1260.6	1690.5	0	0	0	0	0	0
9	Watt ,C (Chad)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
9	Watt ,C (Chad)	4	1340.6	1553.1	4	1323.7	1553.1	0	0	0	0	0	0
10	Tshetlhe ,B (Blessing)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
10	Tshetlhe ,B (Blessing)	4	1417.1	1523.3	4	1415.4	1523.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Grobler, R (Rowan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms