Official NHA Assessment

Race 1: CATERCRAFT MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Forever Royal
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 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    Copper Fire          3    57.0    1    0.00     1.5   -     36           6     +6
2    Hartenbos            2    60.0    2    0.50     0.5   38    44           44    +6
3    Magic Exists         3    59.5    3    1.50     1.5   -     41           41    +41
4    Forever Royal        4    60.0    4    2.50     2.0   41    41           41    +0
5    Silent Power         3    60.0    5    11.50    1.5   38    42           42    +4
99   Hemlock              2    59.5    99   0.00     0.5   -     43           43    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Copper Fire - 60 6 +54 1.5 -
2 Hartenbos 38 47 44 +3 0.5 -
3 Magic Exists - 91 41 +50 1.5 -
4 Forever Royal Line 41 36 41 -5 2.0
5 Silent Power 38 42 42 ✓ Match 1.5 -
99 Hemlock - 59 43 +16 0.5 -
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