PLAYER PAGE

Personal

Grobler, J (Joshua)

Chess SA id

1130134049

FIDE id

?

Date of birth

2013-05-15 (U14)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

77

Junior GPX Points

1430.3

Item Main Standard Rapid Blitz
Rating 1502.9 1501.3 1200 1200
Raw rating 1502.9 1501.3 1200 1200
Weighted rating 1379.4 1377.1 1200 1200
Weighted performance 1502 1497.6 0 0
Floor 1002.9 1001.3 700 700
K-factor 32 32 36 36
Min/Max rating change allowed 107.7 107.9 165.8 165.8
Highest rating 1502.9
2025-11-01
1501.3
2025-11-01
1200
2018-10-01
1200
2018-10-01
Highest raw rating 1502.9
2025-11-01
1501.3
2025-11-01
1200
2024-02-01
1200
2024-02-01
Highest weighted rating 1379.4
2025-11-01
1377.1
2025-11-01
1200
2018-10-01
1200
2018-10-01
Highest weighted performance 1502
2025-11-01
1497.6
2025-11-01
1200
2024-02-01
1200
2024-02-01

Prediction
Item Main Standard Rapid Blitz
Rating change 0 0 0 0
New rating 1502.9 1501.3 1200 1200
Analysis
Rating 1502.9 1501.3 1200 1200
Raw rating 1502.9 1501.3 1200 1200
Weighted rating 1379.4 1377.1 1200
Weighted performance 1502 1497.6 0
K-factor 32 32 36 36
Floor 1002.9 1001.3 700 700
Max/Min rating change allowed 107.7 107.9 165.8 165.8
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 1502.9 1501.3 1200 1200
New weighted rating 1394.3 1392 1200 1200
New weighted performance 1493 1488.6 0 0
Temp new rating 1502.9 1501.3 1200 1200
Temp new rating +/- 0 0 0 0
Final new rating +/- 0 0 0 0
New rating 1502.9 1501.3 1200 1200
New K-factor 32 32 36 36
New floor 1002.9 1001.3 700 700

Item Main Standard Rapid Blitz
0 0 0 0
63 63 0 0
34 34 0 0
10 10 0 0
10 10 0 0
10 10 0 0
History 127 127 0 0

Games since
Main
97
Standard
97
Rapid
0
Blitz
0
Gender Male
Age group U14
Region Tshwane (GTP)
Province Gauteng (GT)
Main
RSA Province Region
Overall 1249 437 163
Male 1069 364 134
U14 172 56 18
U14 Male 136 42 15
Standard
RSA Province Region
Overall 1201 443 165
Male 1023 372 137
U14 168 53 19
U14 Male 133 40 15
Rapid
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U14 -1 -1 -1
U14 Male -1 -1 -1
Blitz
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U14 -1 -1 -1
U14 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 63 39.5 62.7 107.9 1367 1475
Standard 63 39.5 62.7 107.9 1367 1475
Rapid 0 0 0 0 0 0
Blitz 0 0 0 0 0 0
History
Games Score % Dp AvgOpp Performance
Main 127 69 54.33 36.8 1317.3 1354.1
Standard 127 69 54.33 36.8 1317.3 1354.1
Rapid 0 0 0 0 0 0
Blitz 0 0 0 0 0 0

Date Main Standard Rapid Blitz
2025-11-01 1502.9 1501.3 1200 1200
2025-09-30 1483.7 1478.2 1200 1200
2025-09-01 1483.7 1478.2 1200 1200
2025-08-01 1475.4 1468.2 1200 1200
2025-07-01 1402.3 1395 1200 1200
2025-06-01 1467.9 1468 1200 1200
2025-05-01 1452.4 1447.3 1200 1200
2025-04-01 1461.3 1457.2 1200 1200
2025-03-01 1379.6 1378.4 1200 1200
2025-02-01 1343.9 1341.8 1200 1200
2025-01-01 1305.6 1302.6 1200 1200
2024-12-01 1305.6 1302.6 1200 1200
2024-11-01 1239.9 1237 1200 1200
2024-10-01 1231.3 1234.1 1200 1200
2024-09-01 1201.7 1198.8 1200 1200
2024-08-01 1259.1 1270.8 1200 1200
2024-07-01 1259.1 1270.8 1200 1200
2024-09-01 1259.1 1270.8 1200 1200
2024-05-01 1196.7 1196 1200 1200
2024-04-01 1196.7 1196 1200 1200
2024-03-01 1196.7 1196 1200 1200
2024-02-01 1163.8 1154.4 1200 1200
2024-01-01 1163.8 1154.4 1200 1200
2023-12-01 1163.8 1154.4 1200 1200

Comming soon.

Tournaments

No tournaments found.
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
1 2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys) 2025-09-27 2025-09-27 Standard Tshwane (GTP) 5 5 4 Yes Analysis
2 2025 Etienne Lewis Closed Chess Tournament (U14) 2025-08-08 2025-08-10 Standard Tshwane (GTP) 7 7 5 Yes Analysis
3 South African Open 2025 (U14 Open) 2025-07-03 2025-07-05 Standard Johannesburg Metro (GJM) 5 5 4 Yes Analysis
4 2025 Elise Steenkamp Open Chess Tournament (Queen) 2025-06-14 2025-06-16 Standard Tshwane (GTP) 7 6 1 Yes Analysis
5 2025 Tshwane South School District Individual Finals (D4) (U13 Boys) 2025-05-10 2025-05-10 Standard Tshwane (GTP) 5 5 4 Yes Analysis
6 2025 Silver Lakes Chess Club Open Chess Tournament (C) 2025-05-03 2025-05-03 Standard Tshwane (GTP) 5 5 3 Yes Analysis
7 2025 Mid Gauteng Open Chess Tournament (C) 2025-04-12 2025-04-12 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
8 Lubowski Open 2025 (D1) 2025-03-21 2025-03-22 Standard Tshwane (GTP) 5 5 3 Yes Analysis
9 2025 Prestige Open Chess Tournament (C) 2025-03-08 2025-03-08 Standard Tshwane (GTP) 5 5 4 Yes Analysis
10 Constantiapark Open 2025 (C) 2025-02-15 2025-02-15 Standard Tshwane (GTP) 5 5 2 Yes Analysis
11 2025 Blou Bul Open Chess Tournament (D2) 2025-02-08 2025-02-08 Standard Tshwane (GTP) 5 5 4 Yes Analysis
12 2025 Tshwane Chess OPEN Registration Tournament (B2) 2025-01-25 2025-01-25 Standard Tshwane (GTP) 5 5 3 Yes Analysis
Last 500 tournaments since 01 January 2018
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
1 2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys) 2025-09-27 2025-09-27 Standard Tshwane (GTP) 5 5 4 Yes Analysis
2 2025 Etienne Lewis Closed Chess Tournament (U14) 2025-08-08 2025-08-10 Standard Tshwane (GTP) 7 7 5 Yes Analysis
3 South African Open 2025 (U14 Open) 2025-07-03 2025-07-05 Standard Johannesburg Metro (GJM) 5 5 4 Yes Analysis
4 2025 Elise Steenkamp Open Chess Tournament (Queen) 2025-06-14 2025-06-16 Standard Tshwane (GTP) 7 6 1 Yes Analysis
5 2025 Tshwane South School District Individual Finals (D4) (U13 Boys) 2025-05-10 2025-05-10 Standard Tshwane (GTP) 5 5 4 Yes Analysis
6 2025 Silver Lakes Chess Club Open Chess Tournament (C) 2025-05-03 2025-05-03 Standard Tshwane (GTP) 5 5 3 Yes Analysis
7 2025 Mid Gauteng Open Chess Tournament (C) 2025-04-12 2025-04-12 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
8 Lubowski Open 2025 (D1) 2025-03-21 2025-03-22 Standard Tshwane (GTP) 5 5 3 Yes Analysis
9 2025 Prestige Open Chess Tournament (C) 2025-03-08 2025-03-08 Standard Tshwane (GTP) 5 5 4 Yes Analysis
10 Constantiapark Open 2025 (C) 2025-02-15 2025-02-15 Standard Tshwane (GTP) 5 5 2 Yes Analysis
11 2025 Blou Bul Open Chess Tournament (D2) 2025-02-08 2025-02-08 Standard Tshwane (GTP) 5 5 4 Yes Analysis
12 2025 Tshwane Chess OPEN Registration Tournament (B2) 2025-01-25 2025-01-25 Standard Tshwane (GTP) 5 5 3 Yes Analysis
13 Lardies Ope 2024 (U12) 2024-10-26 2024-10-26 Standard Tshwane (GTP) 5 5 3.5 Yes Analysis
14 Laerskool Doringkloof Primary Open Chess Tournament 2024 (U12) 2024-10-19 2024-10-19 Standard Tshwane (GTP) 5 5 1 Yes Analysis
15 2024 Gauteng North Open Chess Tournament (U12) 2024-10-05 2024-10-06 Standard Tshwane (GTP) 5 4 2 Yes Analysis
16 Gauteng Schools Individuals Finals 2024 (U11 Boys) 2024-08-16 2024-08-16 Standard Ekurhuleni (GE) 5 5 3 Yes Analysis
17 D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) 2024-08-03 2024-08-03 Standard Tshwane (GTP) 5 5 0 Yes Analysis
18 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) 2024-05-11 2024-05-11 Standard Tshwane (GTP) 5 5 4 Yes Analysis
19 2024 Constantiapark Open (D2) 2024-02-17 2024-02-17 Standard Tshwane (GTP) 5 5 3 Yes Analysis
20 2023 Tshwane South School District CLOSED League Championship (U11) 2023-07-29 2023-07-29 Standard Tshwane (GTP) 5 5 2 Yes Analysis
21 2023 Tshwane South School District CLOSED Individual Championships (U11 Open) 2023-04-22 2023-04-22 Standard Tshwane (GTP) 5 5 2 Yes Analysis
22 D4 Play Offs 2022 (U9) 2022-07-30 2022-07-30 Standard Tshwane (GTP) 5 5 1.5 Yes Analysis
23 CP Ope 2022 (D2) 2022-02-19 2022-02-19 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
24 2021 Chris Greyling Open Tournament (E) 2021-05-08 2021-05-08 Standard Tshwane (GTP) 5 5 3 Yes Analysis
25 2021 Blou Bul Tournament (E) 2021-04-10 2021-04-10 Standard Mangaung (FMB) 5 5 2 Yes Analysis

Top 3 Streaks

# Games Start End
1 7 Tournament
2025 Prestige Open Chess Tournament
Tournament
Lubowski Open 2025
date
2025-03-08
rnd
1
type
Standard
result
1
date
2025-03-21
rnd
2
type
Standard
result
1
Opponent
Ebersohn, G (Gerhard)
Opponent
Ramonyai, M (Maribe)
2 5 Tournament
South African Open 2025
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-07-03
rnd
2
type
Standard
result
1
date
2025-08-08
rnd
1
type
Standard
result
1
Opponent
Chemane, S (Sean Cheslin)
Opponent
Scheepers, T (Tristian)
3 5 Tournament
2025 Tshwane Chess OPEN Registration Tournament
Tournament
2025 Blou Bul Open Chess Tournament
date
2025-01-25
rnd
4
type
Standard
result
1
date
2025-02-08
rnd
3
type
Standard
result
1
Opponent
Kruger, A (Adriaan)
Opponent
Ramonyai, M (Maribe)
# Games Start End
1 7 Tournament
2025 Prestige Open Chess Tournament
Tournament
Lubowski Open 2025
date
2025-03-08
rnd
1
type
Standard
result
1
date
2025-03-21
rnd
2
type
Standard
result
1
Opponent
Ebersohn, G (Gerhard)
Opponent
Ramonyai, M (Maribe)
2 5 Tournament
South African Open 2025
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-07-03
rnd
2
type
Standard
result
1
date
2025-08-08
rnd
1
type
Standard
result
1
Opponent
Chemane, S (Sean Cheslin)
Opponent
Scheepers, T (Tristian)
3 5 Tournament
2025 Tshwane Chess OPEN Registration Tournament
Tournament
2025 Blou Bul Open Chess Tournament
date
2025-01-25
rnd
4
type
Standard
result
1
date
2025-02-08
rnd
3
type
Standard
result
1
Opponent
Kruger, A (Adriaan)
Opponent
Ramonyai, M (Maribe)
No games found.
# Games Start End
No games found.
# Games Start End
# Games Start End
1 5 Tournament
South African Open 2025
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-07-03
rnd
2
type
Standard
result
1
date
2025-08-08
rnd
1
type
Standard
result
1
Opponent
Chemane, S (Sean Cheslin)
Opponent
Scheepers, T (Tristian)
2 5 Tournament
2025 Tshwane Chess OPEN Registration Tournament
Tournament
2025 Blou Bul Open Chess Tournament
date
2025-01-25
rnd
4
type
Standard
result
1
date
2025-02-08
rnd
3
type
Standard
result
1
Opponent
Kruger, A (Adriaan)
Opponent
Ramonyai, M (Maribe)
3 3 Tournament
2025 Etienne Lewis Closed Chess Tournament
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-08-09
rnd
3
type
Standard
result
1
date
2025-08-10
rnd
5
type
Standard
result
1
Opponent
Snyman, J (Jacques)
Opponent
De Jager, K (Konrad)
# Games Start End
1 5 Tournament
South African Open 2025
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-07-03
rnd
2
type
Standard
result
1
date
2025-08-08
rnd
1
type
Standard
result
1
Opponent
Chemane, S (Sean Cheslin)
Opponent
Scheepers, T (Tristian)
2 5 Tournament
2025 Tshwane Chess OPEN Registration Tournament
Tournament
2025 Blou Bul Open Chess Tournament
date
2025-01-25
rnd
4
type
Standard
result
1
date
2025-02-08
rnd
3
type
Standard
result
1
Opponent
Kruger, A (Adriaan)
Opponent
Ramonyai, M (Maribe)
3 3 Tournament
2025 Etienne Lewis Closed Chess Tournament
Tournament
2025 Etienne Lewis Closed Chess Tournament
date
2025-08-09
rnd
3
type
Standard
result
1
date
2025-08-10
rnd
5
type
Standard
result
1
Opponent
Snyman, J (Jacques)
Opponent
De Jager, K (Konrad)
No games found.
# Games Start End
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
Aor Prat Aor Prat Aor Prat Aor Prat
1 De Bruin ,H (Hanno) 3 2.5 283.3 3 2.5 283.3 0 0 0 0 0 0
1162.5 1445.8 1155.2 1445.8 0 0 0 0
2 Van Reenen ,F (Francois Steyn) 2 1 0 2 1 0 0 0 0 0 0 0
1223 1223 1224.3 1223 0 0 0 0
3 Van Rooyen ,D (Dandre) 2 2 425 2 2 425 0 0 0 0 0 0
1372.9 1797.9 1367.6 1797.9 0 0 0 0
4 Grobbelaar ,M (Mienje) 2 0.5 -212.5 2 0.5 -212.5 0 0 0 0 0 0
1384.2 1171.8 1383.2 1171.8 0 0 0 0
5 Kekana ,K (Karabo) 2 2 425 2 2 425 0 0 0 0 0 0
1237.7 1662.7 1244.4 1662.7 0 0 0 0
6 Ndebele ,AT (Akhumzi Thandolwenkosi) 2 0 -425 2 0 -425 0 0 0 0 0 0
1221.6 796.6 1216.1 796.6 0 0 0 0
7 Vosloo ,D (De Waal) 2 1 0 2 1 0 0 0 0 0 0 0
1313 1313 1313.5 1313 0 0 0 0
8 Visser ,A (Aaron) 2 2 425 2 2 425 0 0 0 0 0 0
1342.3 1767.3 1339.6 1767.3 0 0 0 0
9 Ramonyai ,M (Maribe) 2 2 425 2 2 425 0 0 0 0 0 0
1344.9 1769.9 1341.1 1769.9 0 0 0 0
10 Snyman ,J (Jacques) 2 1 0 2 1 0 0 0 0 0 0 0
1276.2 1276.2 1279.3 1276.2 0 0 0 0

Norms

No norms achieved.
# Norm Tournament Start End Rounds Games Score Details
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