PLAYER PAGE
Mj Jacobs
1100155576Ekurhuleni (GE)Personal
Main rating
| Rating | 1278.7 |
| K-factor | 36 |
| Floor | 791.2 |
| Highest | 1291.2 (2025-09-01) |
| Min/Max +/- allowed | 146 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1230.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1278.7 |
| K-factor | 36 |
| Floor | 791.2 |
| Highest | 1291.2 (2025-09-01) |
| Min/Max +/- allowed | 145.6 |
Standard rating
| Rating | 1287.6 |
| K-factor | 36 |
| Floor | 806.3 |
| Highest | 1306.3 (2025-09-01) |
| Min/Max +/- allowed | 142.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1287.6 |
| K-factor | 36 |
| Floor | 806.3 |
| Highest | 1306.3 (2025-09-01) |
| Min/Max +/- allowed | 142.5 |
Rapid rating
| Rating | 1180.4 |
| 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 | 1180.4 |
| 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 | 2025 Gauteng Schools Provincial Individual Chess Championship (U15 Boys) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1291.2 | 5 | 1.5 | 1214.6 | 0 | Details |
| 2 | GDE (D8) Sedibeng West Schools - Teams 2025 (U15) | Standard | 2025-08-16 | 2025-08-16 | Sedibeng (GSV) | 5 | 1267.8 | 4 | 3 | 1433.7 | 0 | Details |
| 3 | GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys) | Standard | 2025-06-07 | 2025-06-07 | Sedibeng (GSV) | 5 | 1208 | 5 | 4 | 1542.1 | 0 | Details |
| 4 | Sedibeng West District Schools Chess Team's Championships 2024 (U15) | Standard | 2024-08-12 | 2024-08-12 | Sedibeng (GSV) | 5 | 1198.1 | 5 | 2.5 | 1263.7 | 0 | Details |
| 5 | Gauteng Open Arnold Classic 2023 (U16) | Rapid | 2023-05-19 | 2023-05-19 | Tshwane (GTP) | 5 | 1200 | 5 | 2 | 1193.1 | 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 | 24 |
| Wins | 12 |
| Draws | 2 |
| Losses | 10 |
| White | 12 |
| Black | 12 |
| White wins | 5 |
| Black wins | 7 |
| Score | 13 |
| Percent | 54.2 |
| Dp | 35.4 |
| AOR | 1289.7 |
| Performance | 1325.1 |
Rankings (Main)
| National | |
| Overall | 6860 |
| Gender | 5639 |
| Age group | 1078 |
| Gender/Age | 872 |
| Provincial | |
| Overall | 2328 |
| Gender | 1906 |
| Age group | 407 |
| Gender/Age | 335 |
| Regional | |
| Overall | 489 |
| Gender | 378 |
| Age group | 94 |
| Gender/Age | 73 |
Rankings (Standard)
| National | |
| Overall | 5749 |
| Gender | 4698 |
| Age group | 945 |
| Gender/Age | 766 |
| Provincial | |
| Overall | 2070 |
| Gender | 1692 |
| Age group | 377 |
| Gender/Age | 309 |
| Regional | |
| Overall | 392 |
| Gender | 304 |
| Age group | 82 |
| Gender/Age | 63 |
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 | 14 |
| Score | 8.5 |
| Percent | 60.7 |
| Aor | 1303.1 |
| Dp | 91.1 |
| Prat | 1394.2 |
Performance (History)
| Games | 24 |
| Score | 13 |
| Percent | 54.2 |
| Aor | 1289.7 |
| Dp | 35.4 |
| Prat | 1325.1 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | More, N (Nqobile) | 2 | 0 | 2 | GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys) | GDE (D8) Sedibeng West Schools - Teams 2025 (U15) | Details |
| Standard | 1 | More, N (Nqobile) | 2 | 0 | 2 | GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys) | GDE (D8) Sedibeng West Schools - Teams 2025 (U15) | Details |