Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU PINNACLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Marigold Hotel
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 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    Humdinger            3    58.0    1    0.00     2.5   107   107          107   +0
2    Marigold Hotel       3    58.0    2    0.10     2.5   107   107          107   +0
3    Feather Boa          2    56.0    3    0.15     0.0   108   108          108   +0
4    Desert Miracle       3    62.0    4    5.50     2.5   124   115          115   -9
5    Homely Girl          3    58.0    5    8.75     2.5   105   107          107   +2
6    Sprinkles            3    60.0    6    9.25     2.5   110   111          111   +1
7    Sparkling Water      4    62.0    7    11.50    1.5   122   117          117   -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Humdinger 107 119 107 +12 2.5 -
2 Marigold Hotel Line 107 107 107 ✓ Match 2.5
3 Feather Boa 108 114 108 +6 0.0 -
4 Desert Miracle 124 124 115 +9 2.5 -
5 Homely Girl 105 99 107 -8 2.5 -
6 Sprinkles 110 105 111 -6 2.5 -
7 Sparkling Water 122 122 117 +5 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