Official NHA Assessment

Race 2: MATCH WINNER MERIT RATED 77 HANDICAP (Open)

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Line Horse
Red Top
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
3 / 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    Queen Of Fire        3    58.5    1    0.00     3.0   78    68           78    +0
2    Bello Grosso         2    58.5    2    1.75     2.0   74    70           70    -4
3    Red Top              5    60.0    3    3.25     0.0   77    77           77    +0
4    Kallipos             3    58.5    4    4.25     3.0   74    68           68    -6
5    Gypsy Express        5    56.5    5    7.25     0.0   70    70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Queen Of Fire 78 71 78 -7 3.0 -
2 Bello Grosso 74 72 70 +2 2.0 -
3 Red Top Line 77 70 77 -7 0.0
4 Kallipos 74 63 68 -5 3.0 -
5 Gypsy Express 70 58 70 -12 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