Official NHA Assessment

Race 2: STUART FERRIE RACING MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Austrian Beauty
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
6 / 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    Perfume Power        2    58.0    1    0.00     6.5   81    70           70    -11
2    Austrian Beauty      3    60.0    2    4.30     9.5   68    68           68    +0
3    Luthando             3    58.0    3    6.20     9.5   -     64           64    +64
4    Sargasso Sea         3    58.0    4    11.00    9.5   -     64           64    +64
5    Lou Lou              2    56.5    5    12.40    6.5   76    67           67    -9
99   Ruth's Magic         3    56.0    99   0.00     9.5   -     60           60    +0
99   Lovecomesknocking    3    58.0    99   0.00     9.5   -     64           64    +0
99   Captain Ventura      3    58.0    99   0.00     9.5   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perfume Power 81 90 70 +20 6.5 -
2 Austrian Beauty Line 68 60 68 -8 9.5
3 Luthando - 78 64 +14 9.5 -
4 Sargasso Sea - 66 64 +2 9.5 -
5 Lou Lou 76 73 67 +6 6.5 -
99 Ruth's Magic - - 60 -60 9.5 -
99 Lovecomesknocking - 64 64 ✓ Match 9.5 -
99 Captain Ventura - 80 64 +16 9.5 -
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