Official NHA Assessment

Race 3: ZAMBEZI LAGER MERIT RATED 85 HANDICAP (Open)

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Line Horse
Forgotten Time
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 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    Var Aglow            5    61.0    1    0.00     0.0   87    92           87    +0
2    Forgotten Time       3    53.5    2    1.00     2.5   72    72           72    +0
3    Red Top              5    52.0    3    1.25     0.0   67    74           74    +7
4    Kallipos             3    53.5    4    1.50     2.5   72    72           72    +0
5    Bugatti Blue         7    62.0    5    6.50     0.0   89    94           94    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Var Aglow 87 84 87 -3 0.0 -
2 Forgotten Time Line 72 76 72 +4 2.5
3 Red Top 67 70 74 -4 0.0 -
4 Kallipos 72 63 72 -9 2.5 -
5 Bugatti Blue 89 87 94 -7 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