PLAYER PAGE
Joshua Grobler
1130134049Tshwane (GTP)Personal
Main rating
| Rating | 1519 |
| K-factor | 32 |
| Floor | 1038.8 |
| Highest | 1555.3 (2026-02-28) |
| Min/Max +/- allowed | 100 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1439.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1519 |
| K-factor | 32 |
| Floor | 1038.8 |
| Highest | 1555.3 (2026-02-28) |
| Min/Max +/- allowed | 99.9 |
Standard rating
| Rating | 1510.6 |
| K-factor | 32 |
| Floor | 1039.7 |
| Highest | 1553.5 (2026-02-28) |
| Min/Max +/- allowed | 100.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1439.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1510.6 |
| K-factor | 32 |
| Floor | 1039.7 |
| Highest | 1553.5 (2026-02-28) |
| Min/Max +/- allowed | 100.2 |
Rapid rating
| Rating | 1200 |
| 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 | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| 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 | 1200 |
| 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 |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Silver Lakes Open Chess Tournament (B) | Standard | 2026-03-07 | 2026-03-07 | Tshwane (GTP) | 5 | 1555.3 | 4 | 0.5 | 1247.3 | -36.3 | Details |
| 2 | 2026 Constantiapark Open Chess Tournament (A+B) | Standard | 2026-02-14 | 2026-02-14 | Tshwane (GTP) | 5 | 1532.8 | 5 | 2 | 1576.8 | 3.7 | Details |
| 3 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1502.7 | 5 | 4 | 1664.4 | 18.8 | Details |
| 4 | 2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1483.7 | 5 | 4 | 1611.2 | 12 | Details |
| 5 | 2025 Etienne Lewis Closed Chess Tournament (U14) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1475.4 | 7 | 5 | 1502.4 | 5.3 | Details |
| 6 | South African Open 2025 (U14 Open) | Classical | 2025-07-03 | 2025-07-05 | Johannesburg Metro (GJM) | 5 | 1402.3 | 5 | 4 | 1784.8 | 45.6 | Details |
| 7 | 2025 Elise Steenkamp Open Chess Tournament (Queen) | Standard | 2025-06-14 | 2025-06-16 | Tshwane (GTP) | 7 | 1467.9 | 6 | 1 | 1158.2 | -40.9 | Details |
| 8 | 2025 Tshwane South School District Individual Finals (D4) (U13 Boys) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1452.4 | 5 | 4 | 1477.8 | 9 | Details |
| 9 | 2025 Silver Lakes Chess Club Open Chess Tournament (C) | Standard | 2025-05-03 | 2025-05-03 | Tshwane (GTP) | 5 | 1452.4 | 5 | 3 | 1466.3 | 0.7 | Details |
| 10 | 2025 Mid Gauteng Open Chess Tournament (C) | Standard | 2025-04-12 | 2025-04-12 | Tshwane (GTP) | 5 | 1461.3 | 5 | 2.5 | 1410.4 | -5.6 | Details |
| 11 | Lubowski Open 2025 (D1) | Standard | 2025-03-21 | 2025-03-22 | Tshwane (GTP) | 5 | 1379.6 | 5 | 3 | 1403.2 | 1.9 | Details |
| 12 | 2025 Prestige Open Chess Tournament (C) | Standard | 2025-03-08 | 2025-03-08 | Tshwane (GTP) | 5 | 1379.6 | 5 | 4 | 1690.6 | 29.5 | Details |
| 13 | Constantiapark Open 2025 (C) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1343.9 | 5 | 2 | 1291.4 | -5.8 | Details |
| 14 | 2025 Blou Bul Open Chess Tournament (D2) | Standard | 2025-02-08 | 2025-02-08 | Tshwane (GTP) | 5 | 1343.9 | 5 | 4 | 1537.8 | 18.3 | Details |
| 15 | 2025 Tshwane Chess OPEN Registration Tournament (B2) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1305.6 | 5 | 3 | 1418 | 10.3 | Details |
| 16 | Lardies Ope 2024 (U12) | Standard | 2024-10-26 | 2024-10-26 | Tshwane (GTP) | 5 | 1239.9 | 5 | 3.5 | 1504.6 | 25.2 | Details |
| 17 | Laerskool Doringkloof Primary Open Chess Tournament 2024 (U12) | Standard | 2024-10-19 | 2024-10-19 | Tshwane (GTP) | 5 | 1231.3 | 5 | 1 | 1131 | -10.6 | Details |
| 18 | 2024 Gauteng North Open Chess Tournament (U12) | Standard | 2024-10-05 | 2024-10-06 | Tshwane (GTP) | 5 | 1231.3 | 4 | 2 | 1407.5 | 15.4 | Details |
| 19 | Gauteng Schools Individuals Finals 2024 (U11 Boys) | Standard | 2024-08-16 | 2024-08-16 | Ekurhuleni (GE) | 5 | 1201.7 | 5 | 3 | 1377.3 | 16.4 | Details |
| 20 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) | Standard | 2024-08-03 | 2024-08-03 | Tshwane (GTP) | 5 | 1259.1 | 5 | 0 | 939.9 | -31.9 | Details |
| 21 | 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1196.7 | 5 | 4 | 1506.1 | 31.2 | Details |
| 22 | 2024 Constantiapark Open (D2) | Standard | 2024-02-17 | 2024-02-17 | Tshwane (GTP) | 5 | 1163.8 | 5 | 3 | 1326.8 | 16.6 | Details |
| 23 | 2023 Tshwane South School District CLOSED League Championship (U11) | Standard | 2023-07-29 | 2023-07-29 | Tshwane (GTP) | 5 | 1164.8 | 5 | 2 | 1167.3 | -0.5 | Details |
| 24 | 2023 Tshwane South School District CLOSED Individual Championships (U11 Open) | Standard | 2023-04-22 | 2023-04-22 | Tshwane (GTP) | 5 | 1163.5 | 5 | 2 | 1164 | 0.7 | Details |
| 25 | D4 Play Offs 2022 (U9) | Standard | 2022-07-30 | 2022-07-30 | Tshwane (GTP) | 5 | 1180.4 | 5 | 1.5 | 1102.6 | -8.5 | Details |
| 26 | CP Ope 2022 (D2) | Standard | 2022-02-19 | 2022-02-19 | Tshwane (GTP) | 5 | 1187 | 5 | 2.5 | 1158.4 | -3.5 | Details |
| 27 | 2021 Chris Greyling Open Tournament (E) | Standard | 2021-05-08 | 2021-05-08 | Tshwane (GTP) | 5 | 1171.1 | 5 | 3 | 1260.6 | 8 | Details |
| 28 | 2021 Blou Bul Tournament (E) | Standard | 2021-04-10 | 2021-04-10 | Mangaung (FMB) | 5 | 1200 | 5 | 2 | 1044.2 | -14.4 | 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 | 9 |
| Wins | 2 |
| Draws | 1 |
| Losses | 6 |
| White | 4 |
| Black | 5 |
| White wins | 1 |
| Black wins | 1 |
| Score | 2.5 |
| Percent | 27.8 |
| Dp | -188.9 |
| AOR | 1619.3 |
| Performance | 1430.4 |
Game statistics (History)
| Games | 141 |
| Wins | 70 |
| Draws | 11 |
| Losses | 60 |
| White | 74 |
| Black | 67 |
| White wins | 40 |
| Black wins | 30 |
| Score | 75.5 |
| Percent | 53.5 |
| Dp | 30.1 |
| AOR | 1339.8 |
| Performance | 1369.9 |
Rankings (Main)
| National | |
| Overall | 1679 |
| Gender | 1495 |
| Age group | 147 |
| Gender/Age | 115 |
| Provincial | |
| Overall | 574 |
| Gender | 505 |
| Age group | 49 |
| Gender/Age | 40 |
| Regional | |
| Overall | 212 |
| Gender | 185 |
| Age group | 16 |
| Gender/Age | 12 |
Rankings (Standard)
| National | |
| Overall | 1638 |
| Gender | 1440 |
| Age group | 145 |
| Gender/Age | 112 |
| Provincial | |
| Overall | 567 |
| Gender | 498 |
| Age group | 47 |
| Gender/Age | 38 |
| Regional | |
| Overall | 213 |
| Gender | 186 |
| Age group | 15 |
| Gender/Age | 12 |
Rankings (Rapid)
| 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 |
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 | 9 |
| Score | 2.5 |
| Percent | 27.8 |
| Aor | 1619.3 |
| Dp | -188.9 |
| Prat | 1430.4 |
Performance (12 months)
| Games | 47 |
| Score | 27.5 |
| Percent | 58.5 |
| Aor | 1424.7 |
| Dp | 72.3 |
| Prat | 1497.1 |
Performance (History)
| Games | 141 |
| Score | 75.5 |
| Percent | 53.5 |
| Aor | 1339.8 |
| Dp | 30.1 |
| Prat | 1369.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Ndebele, AT (Akhumzi Thandolwenkosi) | 3 | 1 | 2 | 2021 Blou Bul Tournament (E) | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Details |
| Overall | 2 | De Bruin, H (Hanno) | 3 | 2 | 1 | 2021 Blou Bul Tournament (E) | CP Ope 2022 (D2) | Details |
| Overall | 3 | Ribbens, R (Reuben) | 2 | 1 | 1 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) | 2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys) | Details |
| Overall | 4 | Kirstein, T (Tinus Ederich) | 2 | 1 | 1 | 2023 Tshwane South School District CLOSED Individual Championships (U11 Open) | 2025 Etienne Lewis Closed Chess Tournament (U14) | Details |
| Overall | 5 | Van Rooyen, D (Dandre) | 2 | 1 | 1 | 2025 Tshwane Chess OPEN Registration Tournament (B2) | 2025 Etienne Lewis Closed Chess Tournament (U14) | Details |
| Standard | 1 | Ndebele, AT (Akhumzi Thandolwenkosi) | 3 | 1 | 2 | 2021 Blou Bul Tournament (E) | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Details |
| Standard | 2 | De Bruin, H (Hanno) | 3 | 2 | 1 | 2021 Blou Bul Tournament (E) | CP Ope 2022 (D2) | Details |
| Standard | 3 | Grobbelaar, M (Mienje) | 2 | 1 | 1 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) | Lardies Ope 2024 (U12) | Details |
| Standard | 4 | Van Reenen, F (Francois Steyn) | 2 | 0 | 2 | D4 Play Offs 2022 (U9) | 2025 Tshwane Chess OPEN Registration Tournament (B2) | Details |
| Standard | 5 | Jansen, A (Alexia) | 2 | 1 | 1 | Constantiapark Open 2025 (C) | 2025 Silver Lakes Chess Club Open Chess Tournament (C) | Details |