Official NHA Assessment

Race 4: ALLOWANCE PLATE (Open)

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Line Horse
Empire Blue
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 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    Bello Grosso         2    60.0    1    0.00     0.0   76    81           81    +5
2    Prince Of Denmark    4    55.0    2    0.10     0.5   60    70           70    +10
3    The Octagon          2    55.0    3    1.10     0.0   71    75           75    +4
4    Empire Blue          4    57.5    4    1.35     0.5   78    78           78    +0
5    Gypsy Express        5    51.5    5    2.00     0.0   70    67           67    -3
99   Hildelita            4    57.0    99   0.00     0.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bello Grosso 76 72 81 -9 0.0 -
2 Prince Of Denmark 60 51 70 -19 0.5 -
3 The Octagon 71 76 75 +1 0.0 -
4 Empire Blue Line 78 71 78 -7 0.5
5 Gypsy Express 70 58 67 -9 0.0 -
99 Hildelita - 76 74 +2 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