Official NHA Assessment

Race 7: BREEDERS GUINEAS (Listed) (For 3 year-old Fillies)

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Line Horse
Joy And Peace
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
7 / 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     1.5   106   87           87    -19
2    Siddeley             2    60.0    2    0.10     0.0   95    90           90    -5
3    Joy And Peace        4    60.0    3    0.60     1.5   92    92           92    +0
4    Public Benefit       2    60.0    4    1.10     0.0   91    94           94    +3
5    Passchendaele        4    60.0    5    2.10     1.5   85    90           90    +5
99   Gideon's Daughter    4    60.0    99   0.00     1.5   -     87           87    +0
99   Back For More        4    60.0    99   0.00     1.5   -     87           87    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Luna Halo 106 106 87 +19 1.5 -
2 Siddeley 95 105 90 +15 0.0 -
3 Joy And Peace Line 92 110 92 +18 1.5
4 Public Benefit 91 86 94 -8 0.0 -
5 Passchendaele 85 104 90 +14 1.5 -
99 Gideon's Daughter - 94 87 +7 1.5 -
99 Back For More - 75 87 -12 1.5 -
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