Official NHA Assessment

Race 3: RACING TODAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Twilight Bay
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
5 / 10
Within 2 points
Significant Diffs
4 / 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    Twilight Bay         2    60.0    1    0.00     0.0   72    72           72    +0
2    Just For U           2    60.0    2    3.00     0.0   64    74           74    +10
3    Winter's Dragon      3    60.0    3    4.25     2.0   60    69           69    +9
4    Fantasy Girl         2    60.0    4    6.50     0.0   62    72           72    +10
5    Maxigirl             3    60.0    5    17.00    2.0   62    68           68    +6
6    Cosmic Cliffs        3    60.0    6    21.75    2.0   64    68           68    +4
7    Cherry Lane          2    56.0    7    34.00    0.0   -     64           64    +64
8    Welsh Starlet        3    60.0    8    99.99    2.0   58    68           68    +10
9    Winter Gamble        3    60.0    9    99.92    2.0   70    68           68    -2
10   Kola Nut             2    53.5    10   99.98    0.0   -     59           59    +59
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Twilight Bay Line 72 72 72 ✓ Match 0.0
2 Just For U 64 68 74 -6 0.0 -
3 Winter's Dragon 60 68 69 -1 2.0 -
4 Fantasy Girl 62 58 72 -14 0.0 -
5 Maxigirl 62 61 68 -7 2.0 -
6 Cosmic Cliffs 64 67 68 -1 2.0 -
7 Cherry Lane - 66 64 +2 0.0 -
8 Welsh Starlet 58 63 68 -5 2.0 -
9 Winter Gamble 70 70 68 +2 2.0 -
10 Kola Nut - 44 59 -15 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