Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Oklahoma Twister
Reference for assessment
Exact Matches
3 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
8 / 14
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Guardia Regine       3    60.0    1    0.00     4.0   74    67           67    -7
2    Breath Of Magic      4    60.0    2    1.30     2.0   72    74           74    +2
3    Monte Bello          3    60.0    3    1.60     4.0   -     70           70    +70
4    Oklahoma Twister     4    60.0    4    4.80     2.0   71    71           71    +0
5    Highveld Storm       3    60.0    5    7.20     4.0   -     67           67    +67
6    Galladorn            2    60.0    6    9.50     0.0   75    75           75    +0
7    Phala Millions       4    60.0    7    10.75    2.0   70    71           71    +1
8    Pomo Clapper         2    60.0    8    17.00    0.0   63    75           75    +12
9    Isiqalaba            3    60.0    9    20.50    4.0   -     67           67    +67
10   Battle Of Gergovia   3    60.0    10   20.75    4.0   49    67           67    +18
11   Cayenne Pepper       3    60.0    11   23.00    4.0   42    67           67    +25
12   Royal Albert         3    60.0    12   33.75    4.0   54    67           67    +13
13   Duke Of Argyll       3    60.0    13   99.99    4.0   -     67           67    +67
99   Grande Orso          3    60.0    99   0.00     4.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Guardia Regine 74 67 67 ✓ Match 4.0 -
2 Breath Of Magic 72 60 74 -14 2.0 -
3 Monte Bello - 65 70 -5 4.0 -
4 Oklahoma Twister Line 71 71 71 ✓ Match 2.0
5 Highveld Storm - 66 67 -1 4.0 -
6 Galladorn 75 75 75 ✓ Match 0.0 -
7 Phala Millions 70 66 71 -5 2.0 -
8 Pomo Clapper 63 68 75 -7 0.0 -
9 Isiqalaba - 55 67 -12 4.0 -
10 Battle Of Gergovia 49 45 67 -22 4.0 -
11 Cayenne Pepper 42 39 67 -28 4.0 -
12 Royal Albert 54 56 67 -11 4.0 -
13 Duke Of Argyll - 10 67 -57 4.0 -
99 Grande Orso - - 67 -67 4.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points