PLAYER PAGE

Joshua Joubert

1150134895
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1657.6
K-factor 28
Floor 1157.6
Highest 1657.6 (2026-03-01)
Min/Max +/- allowed 86
Rating Change
()
Games 5
Score 4
We 3.51
SWe 0.41
Temp +/- 11.5
Penalties 0
Weight perform 1675.9
Final +/- +18.3
New Rating
()
Rating 1675.9
K-factor 28
Floor 1175.9
Highest 1675.9 (2026-06-01)
Min/Max +/- allowed 84.2
Standard rating
Rating 1657.6
K-factor 28
Floor 1157.6
Highest 1657.6 (2026-03-01)
Min/Max +/- allowed 86.4
Rating Change
()
Games 5
Score 4
We 3.52
SWe 0.48
Temp +/- 13.6
Penalties 0
Weight perform 1675.9
Final +/- +18.3
New Rating
()
Rating 1675.9
K-factor 28
Floor 1175.9
Highest 1675.9 (2026-06-01)
Min/Max +/- allowed 84.2
Rapid rating
Rating 1235.1
K-factor 36
Floor 735.1
Highest 1235.1 (2025-05-05)
Min/Max +/- allowed 157.7
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1042.5
Final +/- 0
New Rating
()
Rating 1235.1
K-factor 36
Floor 735.1
Highest 1235.1 (2025-05-05)
Min/Max +/- allowed 157.7
Blitz rating
Rating 1034.2
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1034.2
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 JMC Helpmekaar 2026 (U12) Standard 2026-05-31 2026-05-31 Johannesburg Metro (GJM) 5 1657.6 5 4 1747.1 11.5 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 Blou Bull Chess Tournament (U12) Standard 2026-02-21 2026-02-21 Tshwane (GTP) 5 1564.7 5 4 1709.8 24 Details
2 JMC Trinityhouse Little Falls (U12) Standard 2026-02-28 2026-02-28 Johannesburg Metro (GJM) 5 1564.7 4 3 1683.6 15 Details
3 2026 Constantiapark Open Chess Tournament (U12) Standard 2026-02-14 2026-02-14 Tshwane (GTP) 5 1509.6 5 4.5 1803.7 29.4 Details
4 West Rand Open 2026 (U12) Standard 2026-02-07 2026-02-07 West Rand (GWR) 5 1509.6 5 3 1453.4 -4.6 Details
5 2026 Tshwane Chess Registration Tournament (U12-1) Standard 2026-01-31 2026-01-31 Tshwane (GTP) 5 1509.6 5 4 1565.4 2.7 Details
6 Gauteng Inter-Region at Emerald Resort 2025 (U12 Championship) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1510.8 5 3 1480.5 -3.9 Details
7 JMC Closed 2025 (U12) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1557.4 5 2 1284.5 -29.1 Details
8 Third Knight Riders Junior Open 2025 (B+C) Standard 2025-06-22 2025-06-22 Johannesburg Metro (GJM) 5 1481.1 4 2.5 1632.5 11.8 Details
9 West Rand Open 2.0 2025 (U12) Standard 2025-06-07 2025-06-07 West Rand (GWR) 5 1481.1 5 5 1791.9 31.2 Details
10 JMC Helpmekaar 2025 (U12) Standard 2025-06-01 2025-06-01 Johannesburg Metro (GJM) 5 1481.1 5 3.5 1467.2 -0.5 Details
11 JMC Crawford Sandton 2025 (C) Standard 2025-05-10 2025-05-10 Johannesburg Metro (GJM) 5 1479.3 5 2 1273.5 -19.3 Details
12 FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid) Rapid 2025-04-13 2025-04-15 Greece (GRE) 11 1476.8 11 3.5 1358.5 -14 Details
13 South African Junior Closed Chess Championships 2025 (U10 Open) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1476.8 9 4.5 1433.2 -10 Details
14 2025 Chris Greyling Open Chess Tournament (U12) Standard 2025-03-15 2025-03-15 Tshwane (GTP) 5 1477.5 5 3.5 1564.2 7.8 Details
15 MCA Summer March 2025 (Advanced) Standard 2025-03-08 2025-03-08 Johannesburg Metro (GJM) 5 1477.5 5 0 1055.1 -42 Details
16 JMC Kick Off 2025 (B) Standard 2025-02-02 2025-02-02 Johannesburg Metro (GJM) 5 1527 4 0 947.3 -45.2 Details
17 2025 Tshwane Chess OPEN Registration Tournament (U12) Standard 2025-01-25 2025-01-25 Tshwane (GTP) 5 1541.2 5 3 1441.2 -8.8 Details
18 Gauteng Inter-Region at UJ 2024 (U10 Open) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1504.2 5 4 1705.4 23.1 Details
19 2024 Tshwane Chess Club Clash (Open) Standard 2024-10-12 2024-10-12 Tshwane (GTP) 5 1537.9 5 2 1275 -26.4 Details
20 Gauteng Top Schools 2024 (U11 Open) Standard 2024-10-04 2024-10-04 Ekurhuleni (GE) 5 1537.9 5 4 1583.4 5.3 Details
21 Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs) Classical 2024-08-17 2024-08-17 Bojanala Platina (NBR) 5 1542.9 5 3.5 1540.2 -0.8 Details
22 JMC Closed 2024 (U10) Standard 2024-08-09 2024-08-09 Johannesburg Metro (GJM) 5 1542.9 5 4 1523.9 -2.3 Details
23 Second Knight Riders Juniors Open Chess Tournament 2024 (U10) Standard 2024-06-08 2024-06-08 Johannesburg Metro (GJM) 5 1494.6 5 4 1393.2 -9.5 Details
24 JMC Trinityhouse Little Falls 2024 (U10) Standard 2024-06-02 2024-06-02 Johannesburg Metro (GJM) 5 1494.6 5 4.5 1739.3 24.7 Details
25 Chess Power House May Open 2024 (D) Standard 2024-05-25 2024-05-25 Johannesburg Metro (GJM) 5 1352.8 5 3 1459.6 11.3 Details
26 JMC Crawford International Sandton 2024 (U10) Standard 2024-05-11 2024-05-11 Johannesburg Metro (GJM) 5 1352.8 5 5 1780.3 42.5 Details
27 South African Junior Closed Chess Championship 2024 (U10 Open) Classical 2024-04-27 2024-05-01 Ekurhuleni (GE) 9 1352.8 8 2 1209.2 -27.2 Details
28 JMC Helpmekaar Kollege Tournament 2024 (U10) Standard 2024-05-04 2024-05-04 Johannesburg Metro (GJM) 5 1352.8 5 4 1553.6 20.3 Details
29 Hermanus Chess Club Open 2024 (Intermediate) Rapid 2024-04-20 2024-04-20 Overberg (WOS) 7 1374 7 3.5 1195.2 -13.3 Details
30 CPH St Andrew's Rapid 2024 (C) Rapid 2024-03-30 2024-03-30 Ekurhuleni (GE) 5 1342.3 5 4.5 1709.3 19.9 Details
31 2024 Tshwane Chess AHS Open Chess Tournament (C2) Standard 2024-02-24 2024-02-24 Tshwane (GTP) 5 1408.2 5 2 1230.1 -16.6 Details
32 2024 Blou Bul Open Chess Tournament (C) Standard 2024-02-10 2024-02-10 Tshwane (GTP) 5 1408.2 5 1.5 1148.1 -24.6 Details
33 2024 Gauteng Inter-Region Chess Championship (U10A) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1435.1 5 4 1565.5 13.5 Details
34 JMC Kick Off Tournament 2024 (D) Standard 2024-01-28 2024-01-28 Johannesburg Metro (GJM) 5 1435.1 5 2 1128.1 -30.4 Details
35 2023 Centurion Chess Open (C) Standard 2023-09-23 2023-09-23 Tshwane (GTP) 5 1481.6 5 2 1175.7 -28.9 Details
36 JMC Closed Aug 2023 (U10) Standard 2023-08-04 2023-08-06 Johannesburg Metro (GJM) 6 1477.7 6 4 1507.8 4.1 Details
37 Chess Power House 2023 (C) Standard 2023-08-19 2023-08-19 Johannesburg Metro (GJM) 5 1477.7 4 3 1456.5 -1.7 Details
38 Bojanala's FIDE in the Sparkling Waters 2023 (Junior) Classical 2023-07-29 2023-07-29 Bojanala Platina (NBR) 6 1414.1 6 5 1518.3 13.4 Details
39 JMC Trinity Little Falls 2023 (U10) Standard 2023-07-02 2023-07-02 Johannesburg Metro (GJM) 5 1414.1 5 4 1488.4 6.8 Details
40 JNW Open - Trinityhouse Little Falls 2023 (U10) Standard 2023-06-24 2023-06-24 Johannesburg Metro (GJM) 5 1359.2 5 4 1491.6 12.3 Details
41 JNW Open - Trinityhouse Little Falls 2023 (U10) Standard 2023-05-13 2023-05-13 Johannesburg Metro (GJM) 5 1323.9 5 4 1544.4 22.2 Details
42 Silver Lakes Open Chess Tournament (C) Standard 2023-04-15 2023-04-15 Tshwane (GTP) 5 1292.6 5 2.5 1317.3 3.2 Details
43 2023 South African Junior Closed Chess Championships (U8 Open) Classical 2023-03-31 2023-04-04 Chess South Africa (CSA) 9 1292.6 9 4.5 1367.2 16.4 Details
44 Chris Greyling Open Tournament 2023 (D1) Standard 2023-03-21 2023-03-21 Tshwane (GTP) 5 1370.7 5 3 1240.4 -11.8 Details
45 JMC 1 St Peters 2023 (C) Standard 2023-03-18 2023-03-18 Johannesburg Metro (GJM) 5 1370.7 5 1 997.5 -37 Details
46 Mzansi Rapid 2023 (Intermediate) Rapid 2023-02-04 2023-02-04 Johannesburg Metro (GJM) 6 1400.8 6 2 1155.7 -18.7 Details
47 2023 Tshwane Chess Open Registration Tournament (E) Standard 2023-01-28 2023-01-28 Tshwane (GTP) 5 1398.1 5 4 1404.7 1.7 Details
48 2022 South African Junior Team Chess Championships (U8 Open+Girls) Classical 2022-12-04 2022-12-08 4 Knights (4K) 7 1321.1 7 7 1574.5 42.8 Details
49 JMC 3rd Trials 2022 (U8) Standard 2022-09-11 2022-09-11 Johannesburg Metro (GJM) 5 1310 5 4 1379 6.3 Details
50 JMC Womens Day 2022 (U8) Standard 2022-08-06 2022-08-06 Johannesburg Metro (GJM) 5 1263.4 5 5 1467.1 20.7 Details
Game statistics ( )
Games 0
Wins 0
Draws 0
Losses 0
White 0
Black 0
White wins 0
Black wins 0
Score 0
Percent 0
Dp 0
AOR 0
Performance 0
Game statistics ()
Games 29
Wins 21
Draws 3
Losses 5
White 14
Black 15
White wins 9
Black wins 12
Score 22.5
Percent 77.6
Dp 234.5
AOR 1425.2
Performance 1659.7
Game statistics (History)
Games 337
Wins 188
Draws 18
Losses 131
White 166
Black 171
White wins 95
Black wins 93
Score 197
Percent 58.5
Dp 71.9
AOR 1292.4
Performance 1364.3
Rankings (Main)
National
Overall 739
Gender 691
Age group 29
Gender/Age 25
Provincial
Overall 257
Gender 238
Age group 13
Gender/Age 10
Regional
Overall 100
Gender 89
Age group 9
Gender/Age 6
Rankings (Standard)
National
Overall 689
Gender 645
Age group 28
Gender/Age 24
Provincial
Overall 244
Gender 227
Age group 12
Gender/Age 9
Regional
Overall 92
Gender 82
Age group 8
Gender/Age 5
Rankings (Rapid)
National
Overall 3479
Gender 2776
Age group 541
Gender/Age 413
Provincial
Overall 718
Gender 577
Age group 102
Gender/Age 83
Regional
Overall 242
Gender 211
Age group 35
Gender/Age 28
Rankings (Blitz)
National
Overall -1
Gender -1
Age group -1
Gender/Age -1
Provincial
Overall -1
Gender -1
Age group -1
Gender/Age -1
Regional
Overall -1
Gender -1
Age group -1
Gender/Age -1
Performance ( )
Games 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance ()
Games 29
Score 22.5
Percent 77.6
Aor 1425.2
Dp 234.5
Prat 1659.7
Performance (12 months)
Games 43
Score 30
Percent 69.8
Aor 1424.7
Dp 168
Prat 1592.7
Performance (History)
Games 337
Score 197
Percent 58.5
Aor 1292.4
Dp 71.9
Prat 1364.3
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Pillay, Y (Yishai) 7 4 3 JMC Bryanston 2021 (E) West Rand Open 2.0 2025 (U12) Details
Overall 2 Stelloh, S (Sebastian) 7 2 5 2023 South African Junior Closed Chess Championships (U8 Open) Third Knight Riders Junior Open 2025 (B+C) Details
Overall 3 Conradie, M (Minka) 6 0 6 2022 Tshwane Chess Open Registration Tournament (F) JMC Trinityhouse Little Falls 2024 (U10) Details
Overall 4 Le Kay, A (Alexa) 5 3 2 2022 Milos Ristic Open Chess Tournament (F) JMC Closed 2025 (U12) Details
Overall 5 Ma, M (Matthew) 4 1 3 Mzansi Rapid 2023 (Intermediate) South African Junior Closed Chess Championship 2024 (U10 Open) Details
Standard 1 Stelloh, S (Sebastian) 7 2 5 2023 South African Junior Closed Chess Championships (U8 Open) Third Knight Riders Junior Open 2025 (B+C) Details
Standard 2 Pillay, Y (Yishai) 7 4 3 JMC Bryanston 2021 (E) West Rand Open 2.0 2025 (U12) Details
Standard 3 Conradie, M (Minka) 6 0 6 2022 Tshwane Chess Open Registration Tournament (F) JMC Trinityhouse Little Falls 2024 (U10) Details
Standard 4 Le Kay, A (Alexa) 5 3 2 2022 Milos Ristic Open Chess Tournament (F) JMC Closed 2025 (U12) Details
Standard 5 Kwint, J (Jack) 3 1 2 JMC Trials 1 - Laerskool Fontainebleau 2022 (U8) JMC Closed Aug 2023 (U10) Details