Official NHA Assessment

Race 5: INTERNATIONAL 500 RACING SYNDICATE CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
Dark Matter
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
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    Prankster            2    52.0    1    0.00     5.0   66    76           72    +6
2    Dark Matter          2    60.0    2    0.40     5.0   92    92           92    +0
3    Your Ladyship        3    56.0    3    0.45     7.5   74    79           79    +5
4    Magical Sky          2    50.0    4    0.85     5.0   77    72           72    -5
5    Moscow Miss          2    51.5    5    1.25     5.0   80    75           75    -5
6    Vision To Achieve    4    60.5    6    2.05     9.0   86    85           85    -1
7    Tequila Sky          4    55.5    7    4.55     9.0   73    75           75    +2
99   Call Me Jane         3    55.5    99   0.00     7.5   -     78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Prankster 66 69 72 -3 5.0 -
2 Dark Matter Line 92 92 92 ✓ Match 5.0
3 Your Ladyship 74 66 79 -13 7.5 -
4 Magical Sky 77 84 72 +12 5.0 -
5 Moscow Miss 80 72 75 -3 5.0 -
6 Vision To Achieve 86 87 85 +2 9.0 -
7 Tequila Sky 73 74 75 -1 9.0 -
99 Call Me Jane - 72 78 -6 7.5 -
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