PLAYER PAGE
Jaco Oosthuizen
1140190896Tshwane (GTP)Personal
Main rating
| Rating | 1396.3 |
| K-factor | 36 |
| Floor | 886.5 |
| Highest | 1448.7 (2025-11-01) |
| Min/Max +/- allowed | 116 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1416.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1396.3 |
| K-factor | 36 |
| Floor | 886.5 |
| Highest | 1448.7 (2025-11-01) |
| Min/Max +/- allowed | 116.3 |
Standard rating
| Rating | 1406.2 |
| K-factor | 32 |
| Floor | 906.2 |
| Highest | 1458.6 (2024-05-01) |
| Min/Max +/- allowed | 114.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1416.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1406.2 |
| K-factor | 32 |
| Floor | 906.2 |
| Highest | 1458.6 (2024-05-01) |
| Min/Max +/- allowed | 114.7 |
Rapid rating
| Rating | 1217.6 |
| K-factor | 36 |
| Floor | 717.6 |
| Highest | 1288.8 (2023-11-01) |
| Min/Max +/- allowed | 146.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1217.6 |
| K-factor | 36 |
| Floor | 717.6 |
| Highest | 1288.8 (2023-11-01) |
| Min/Max +/- allowed | 146.1 |
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 | 2025 Gauteng Top Schools Teams (U11) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1306.1 | 5 | 1.5 | 1334.5 | 0 | Details |
| 2 | 2025 Gauteng Schools Provincial Individual Chess Championship (U11 Boys) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1306.1 | 5 | 4 | 1752.8 | 0 | Details |
| 3 | 2025 Tshwane South School District CLOSED League Championship (U11A) | Standard | 2025-08-15 | 2025-08-15 | Tshwane (GTP) | 5 | 1303 | 5 | 2 | 1329.2 | 0 | Details |
| 4 | 2025 Tshwane South School District Individual Finals (D4) (U11 Boys) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1252.1 | 5 | 3.5 | 1550 | 0 | Details |
| 5 | 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1208.8 | 5 | 3.5 | 1462.5 | 0 | Details |
| 6 | CCC Midstream Rapid 2023 | Rapid | 2023-11-27 | 2023-11-27 | Tshwane (GTP) | 5 | 1200 | 5 | 3 | 1300.3 | 0 | 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 | 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 (History)
| Games | 30 |
| Wins | 15 |
| Draws | 5 |
| Losses | 10 |
| White | 17 |
| Black | 13 |
| White wins | 9 |
| Black wins | 6 |
| Score | 17.5 |
| Percent | 58.3 |
| Dp | 70.8 |
| AOR | 1384.1 |
| Performance | 1454.9 |
Rankings (Main)
| National | |
| Overall | 3367 |
| Gender | 2855 |
| Age group | 367 |
| Gender/Age | 263 |
| Provincial | |
| Overall | 1165 |
| Gender | 974 |
| Age group | 118 |
| Gender/Age | 87 |
| Regional | |
| Overall | 424 |
| Gender | 344 |
| Age group | 38 |
| Gender/Age | 22 |
Rankings (Standard)
| National | |
| Overall | 2874 |
| Gender | 2429 |
| Age group | 314 |
| Gender/Age | 225 |
| Provincial | |
| Overall | 1040 |
| Gender | 878 |
| Age group | 104 |
| Gender/Age | 78 |
| Regional | |
| Overall | 387 |
| Gender | 317 |
| Age group | 33 |
| Gender/Age | 20 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 20 |
| Score | 11 |
| Percent | 55 |
| Aor | 1449.1 |
| Dp | 42.5 |
| Prat | 1491.6 |
Performance (History)
| Games | 30 |
| Score | 17.5 |
| Percent | 58.3 |
| Aor | 1384.1 |
| Dp | 70.8 |
| Prat | 1454.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Janse Van Rensburg, J (Josh) | 3 | 2 | 1 | 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) | 2025 Gauteng Top Schools Teams (U11) | Details |
| Standard | 1 | Janse Van Rensburg, J (Josh) | 3 | 2 | 1 | 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) | 2025 Gauteng Top Schools Teams (U11) | Details |