Official NHA Assessment

Race 6: THE LADY'S STAKES (For Fillies and Mares (Non-Black Type))

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Line Horse
Bon Vivant
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Mercury Rising       3    61.5    1    0.00     9.5   105   105          105   +0
2    Bon Vivant           3    61.0    2    2.45     9.5   104   104          104   +0
3    May Queen            5    56.5    3    4.35     0.0   95    114          114   +19
4    Wokonda              3    52.0    4    4.50     9.5   86    86           86    +0
5    Time For Glory       2    52.5    5    8.50     6.5   100   93           93    -7
6    Mighty Goddess       2    52.0    6    10.90    6.5   92    92           92    +0
7    Kayla's Champ        5    60.5    7    14.60    0.0   103   122          122   +19
8    Maryah               3    59.0    8    99.99    9.5   100   100          100   +0
9    Miss Daisy           2    52.0    9    99.97    6.5   99    92           92    -7
99   Midnight Gem         4    56.0    99   0.00     11.0  -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercury Rising 105 106 105 +1 9.5 -
2 Bon Vivant Line 104 96 104 -8 9.5
3 May Queen 95 90 114 -24 0.0 -
4 Wokonda 86 89 86 +3 9.5 -
5 Time For Glory 100 77 93 -16 6.5 -
6 Mighty Goddess 92 73 92 -19 6.5 -
7 Kayla's Champ 103 77 122 -45 0.0 -
8 Maryah 100 100 100 ✓ Match 9.5 -
9 Miss Daisy 99 108 92 +16 6.5 -
99 Midnight Gem - 81 91 -10 11.0 -
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