Official NHA Assessment

Race 7: THE CLAPHAM STAKES (For 3-year-old Fillies (Non-Black Type))

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Line Horse
Fun Zone
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 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    Silverlinks          2    60.0    1    0.00     0.0   89    88           88    -1
2    Hold My Hand         2    60.0    2    0.40     0.0   108   93           98    -10
3    Fun Zone             5    60.0    3    1.15     0.0   92    92           92    +0
4    Love Is A Rose       2    60.0    4    1.45     0.0   91    91           91    +0
5    Broadway Girl        5    60.0    5    1.95     0.0   87    91           91    +4
6    Future Girl          2    60.0    6    2.45     0.0   86    90           90    +4
7    Trip To Barberton    2    60.0    7    4.20     0.0   67    89           89    +22
8    Butterfly Beauty     2    60.0    8    4.60     0.0   90    88           88    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silverlinks 89 94 88 +6 0.0 -
2 Hold My Hand 108 112 98 +14 0.0 -
3 Fun Zone Line 92 96 92 +4 0.0
4 Love Is A Rose 91 105 91 +14 0.0 -
5 Broadway Girl 87 89 91 -2 0.0 -
6 Future Girl 86 97 90 +7 0.0 -
7 Trip To Barberton 67 64 89 -25 0.0 -
8 Butterfly Beauty 90 80 88 -8 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