Surname or Chess SA id..
Chess SA Region AOC

PLAYER PAGE

Dereck Donora

1090301686
Johannesburg 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
No tournaments found.
# 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
Player not found.
Type # Opponent Games White Black First tournament Last tournament Details