Official NHA Assessment

Race 5: LADY'S BRACELET (For F & M at Weight for Age plus Penalties. Non Blk-Type)

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Line Horse
Essential
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
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    Luna Halo            4    60.0    1    0.00     2.5   108   93           93    -15
2    Lady Silvano         5    59.0    2    0.75     0.0   92    100          100   +8
3    Essential            4    59.0    3    4.00     2.5   92    92           92    +0
4    Among The Clouds     4    59.0    4    4.75     2.5   76    91           91    +15
5    Red Sash             5    59.0    5    8.50     0.0   97    96           96    -1
6    Official Secret      6    59.0    6    8.75     0.0   107   96           97    -10
7    Where's The Party    5    59.0    7    22.00    0.0   93    96           96    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Luna Halo 108 106 93 +13 2.5 -
2 Lady Silvano 92 104 100 +4 0.0 -
3 Essential Line 92 91 92 -1 2.5
4 Among The Clouds 76 77 91 -14 2.5 -
5 Red Sash 97 101 96 +5 0.0 -
6 Official Secret 107 103 97 +6 0.0 -
7 Where's The Party 93 85 96 -11 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