PLAYER PAGE
Dereck Donora
1090301686Johannesburg Metro (GJM)Personal
Main rating
| Rating | 1286.4 |
| K-factor | 36 |
| Floor | 786.4 |
| Highest | 1286.4 (2025-11-30) |
| Min/Max +/- allowed | 147 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1286.4 |
| K-factor | 36 |
| Floor | 786.4 |
| Highest | 1286.4 (2025-11-30) |
| Min/Max +/- allowed | 146.6 |
Standard rating
| Rating | 1301.3 |
| K-factor | 36 |
| Floor | 801.3 |
| Highest | 1301.3 (2025-11-30) |
| Min/Max +/- allowed | 143.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1301.3 |
| K-factor | 36 |
| Floor | 801.3 |
| Highest | 1301.3 (2025-11-30) |
| Min/Max +/- allowed | 143.5 |
Rapid rating
| Rating | 1200.2 |
| K-factor | 36 |
| Floor | 700.2 |
| Highest | 1200.2 (2025-04-01) |
| 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 | 1200.2 |
| K-factor | 36 |
| Floor | 700.2 |
| Highest | 1200.2 (2025-04-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| 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 (2024-05-01) |
| 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 | JCC St Davids Marist Schools League 2025 (B) | Standard | 2025-09-08 | 2025-10-27 | Johannesburg Metro (GJM) | 6 | 1241.3 | 3 | 3 | 1678.7 | 0 | Details |
| 2 | UJ @20years Open Chess Championship 2025 (B) | Standard | 2025-10-18 | 2025-10-18 | Johannesburg Metro (GJM) | 5 | 1238.6 | 5 | 2.5 | 1247.2 | 0 | Details |
| 3 | JCC Steyn City High Schools League 2025 (B) | Standard | 2025-05-07 | 2025-06-09 | Johannesburg Metro (GJM) | 6 | 1199.7 | 4 | 3 | 1458.6 | 0 | Details |
| 4 | JCC - Dainfern Chess League 2025 (A) | Standard | 2025-02-03 | 2025-03-17 | Johannesburg Metro (GJM) | 6 | 1199.8 | 4 | 1 | 1080.3 | 0 | Details |
| 5 | UJ Scholars 1st Edition 2025 (U19) | Rapid | 2025-03-15 | 2025-03-15 | Johannesburg Metro (GJM) | 5 | 1199.8 | 4 | 2 | 1311.6 | 0 | Details |
| 6 | Dainfern College Chess League 2024 (B) | Standard | 2024-01-29 | 2024-03-11 | Johannesburg Metro (GJM) | 6 | 1200 | 2 | 1 | 1229.3 | 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 | 22 |
| Wins | 12 |
| Draws | 1 |
| Losses | 9 |
| White | 11 |
| Black | 11 |
| White wins | 9 |
| Black wins | 3 |
| Score | 12.5 |
| Percent | 56.8 |
| Dp | 58 |
| AOR | 1266.3 |
| Performance | 1324.2 |
Rankings (Main)
| National | |
| Overall | 6522 |
| Gender | 5372 |
| Age group | 1029 |
| Gender/Age | 834 |
| Provincial | |
| Overall | 2204 |
| Gender | 1816 |
| Age group | 388 |
| Gender/Age | 322 |
| Regional | |
| Overall | 591 |
| Gender | 510 |
| Age group | 102 |
| Gender/Age | 90 |
Rankings (Standard)
| National | |
| Overall | 5313 |
| Gender | 4357 |
| Age group | 873 |
| Gender/Age | 707 |
| Provincial | |
| Overall | 1911 |
| Gender | 1572 |
| Age group | 352 |
| Gender/Age | 289 |
| Regional | |
| Overall | 497 |
| Gender | 426 |
| Age group | 86 |
| Gender/Age | 75 |
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 | 11.5 |
| Percent | 57.5 |
| Aor | 1270 |
| Dp | 63.8 |
| Prat | 1333.7 |
Performance (History)
| Games | 22 |
| Score | 12.5 |
| Percent | 56.8 |
| Aor | 1266.3 |
| Dp | 58 |
| Prat | 1324.2 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
