Official NHA Assessment

Race 2: MERIT RATED 65 HANDICAP (Open)

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Line Horse
Duchess Of War
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
2 / 7
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    Nandine              3    57.0    1    0.00     6.0   59    45           59    +0
2    Duchess Of War       2    57.0    2    2.50     0.0   59    59           59    +0
3    Evocative            3    52.5    3    4.50     6.0   50    36           40    -10
4    Eastern World        3    55.0    4    5.25     6.0   55    41           45    -10
5    Count Moderna        3    55.5    5    5.50     6.0   56    42           46    -10
6    Red Orchid           3    52.0    6    7.00     6.0   48    35           38    -10
99   Bird In Space        2    61.5    99   0.00     0.0   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nandine 59 60 59 +1 6.0 -
2 Duchess Of War Line 59 55 59 -4 0.0
3 Evocative 50 44 40 +4 6.0 -
4 Eastern World 55 52 45 +7 6.0 -
5 Count Moderna 56 54 46 +8 6.0 -
6 Red Orchid 48 43 38 +5 6.0 -
99 Bird In Space - 66 66 ✓ Match 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