Official NHA Assessment

Race 3: ROMAPIX CONSTRUCTION MERIT RATED 80 HANDICAP (Open)

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Line Horse
Red Top
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
2 / 5
Within 2 points
Significant Diffs
2 / 5
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    Ultimate Jewel       5    60.0    1    0.00     0.0   80    80           80    +0
2    Nandine              3    58.0    2    0.05     8.5   76    59           66    -10
3    Red Top              5    57.0    3    1.55     0.0   74    74           74    +0
4    Hildelita            4    59.0    4    2.80     10.0  78    58           68    -10
5    Kallipos             3    56.0    5    27.80    8.5   72    55           62    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ultimate Jewel 80 80 80 ✓ Match 0.0 -
2 Nandine 76 60 66 -6 8.5 -
3 Red Top Line 74 70 74 -4 0.0
4 Hildelita 78 76 68 +8 10.0 -
5 Kallipos 72 63 62 +1 8.5 -
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