Official NHA Assessment

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

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Line Horse
Iron Sky
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
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    Iron Sky             3    60.0    1    0.00     2.5   74    74           74    +0
2    Waitforgreenlight    2    52.0    2    0.05     1.5   -     60           60    +60
3    Joker Man            4    57.0    3    3.00     0.0   -     73           73    +73
4    Forever Free         4    60.0    4    3.50     0.0   55    79           79    +24
5    Rainbow Reward       5    60.0    5    5.50     0.0   -     79           79    +79
6    Crown Prince         3    60.0    6    10.25    2.5   -     74           74    +74
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Iron Sky Line 74 61 74 -13 2.5
2 Waitforgreenlight - 67 60 +7 1.5 -
3 Joker Man - 98 73 +25 0.0 -
4 Forever Free 55 56 79 -23 0.0 -
5 Rainbow Reward - 89 79 +10 0.0 -
6 Crown Prince - 50 74 -24 2.5 -
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