Official NHA Assessment

Race 2: LUCKY FISH LUCKY BREAK MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Vaans Spirit
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Vaans Spirit         3    60.0    1    0.00     2.5   72    72           72    +0
2    Vixens War           2    60.0    2    0.90     0.0   69    81           81    +12
3    Dancing In Demark    2    57.5    3    3.20     0.0   64    74           74    +10
4    Magical Spring       3    60.0    4    9.70     2.5   62    72           72    +10
5    Chaos Queen          3    60.0    5    12.90    2.5   -     72           72    +72
6    A M C Rose           4    58.5    6    22.80    1.0   -     72           72    +72
7    A M C Labree         3    58.5    7    54.20    2.5   -     69           69    +69
99   Surely Not           3    60.0    99   0.00     2.5   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vaans Spirit Line 72 72 72 ✓ Match 2.5
2 Vixens War 69 69 81 -12 0.0 -
3 Dancing In Demark 64 64 74 -10 0.0 -
4 Magical Spring 62 62 72 -10 2.5 -
5 Chaos Queen - - 72 -72 2.5 -
6 A M C Rose - - 72 -72 1.0 -
7 A M C Labree - - 69 -69 2.5 -
99 Surely Not - 60 72 -12 2.5 -
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