Official NHA Assessment

Race 2: MERIT RATED 66 HANDICAP (Open)

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Line Horse
Prince Of Denmark
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
2 / 4
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    Trustfall            3    54.5    1    0.00     3.0   60    50           60    +0
2    When Evening Comes   5    56.5    2    2.25     0.0   59    63           63    +4
3    Prince Of Denmark    4    57.0    3    2.50     1.5   60    60           60    +0
4    Bruce's Spirit       6    60.0    4    9.50     0.0   66    67           67    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trustfall 60 62 60 +2 3.0 -
2 When Evening Comes 59 58 63 -5 0.0 -
3 Prince Of Denmark Line 60 51 60 -9 1.5
4 Bruce's Spirit 66 55 67 -12 0.0 -
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