Official NHA Assessment

Race 3: JOIN ZIMFUN RACING CLUB MERIT RATED 83 HANDICAP (Open)

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Line Horse
Aerial Display
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 6
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    Magic Exists         3    60.0    1    0.00     7.0   85    66           85    +0
2    September Flower     2    59.5    2    0.75     0.0   84    85           85    +1
3    Kagura               4    53.0    3    0.80     3.5   71    65           65    -6
4    Aerial Display       5    53.0    4    3.10     0.0   69    69           69    +0
5    King's Crown         3    54.5    5    3.15     7.0   74    58           64    -10
6    My Secret Place      5    55.0    6    4.90     0.0   73    70           70    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Magic Exists 85 91 85 +6 7.0 -
2 September Flower 84 91 85 +6 0.0 -
3 Kagura 71 72 65 +7 3.5 -
4 Aerial Display Line 69 68 69 -1 0.0
5 King's Crown 74 79 64 +15 7.0 -
6 My Secret Place 73 71 70 +1 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