Official NHA Assessment

Race 2: OPEN A tabGOLD ACCOUNT - 031 314 1874 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 10
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    Petit Verdot         2    57.0    1    0.00     0.5   -     -            -     +0
2    Isn't She Bonny      2    57.0    2    0.60     0.5   -     -            -     +0
3    Victory Belle        3    60.0    3    1.50     1.5   -     -            -     +0
4    Fire Phoenix         2    57.0    4    2.10     0.5   -     -            -     +0
5    Spirited Flight      5    57.0    5    4.70     0.0   -     -            -     +0
6    Gajack               2    57.0    6    9.60     0.5   -     -            -     +0
7    If You Say So        3    58.5    7    11.80    1.5   -     -            -     +0
8    Chasing Time         2    57.0    8    13.60    0.5   -     -            -     +0
9    Vreni                4    60.0    9    13.65    2.0   -     -            -     +0
10   Who Are You          2    57.0    10   14.85    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Petit Verdot - 75 - +75 0.5 -
2 Isn't She Bonny - 71 - +71 0.5 -
3 Victory Belle - 60 - +60 1.5 -
4 Fire Phoenix - 59 - +59 0.5 -
5 Spirited Flight - 61 - +61 0.0 -
6 Gajack - 56 - +56 0.5 -
7 If You Say So - 57 - +57 1.5 -
8 Chasing Time - 47 - +47 0.5 -
9 Vreni - 20 - +20 2.0 -
10 Who Are You - 58 - +58 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