Official NHA Assessment

Race 6: Lucky Fish Power Pick B STAKES (For All Horses)

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Line Horse
Imperial Power
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
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    Isivivane            3    61.5    1    0.00     5.0   98    93           93    -5
2    Sundance Kid         5    59.0    2    1.80     0.0   96    101          101   +5
3    Imperial Power       4    55.5    3    4.30     2.5   86    86           86    +0
4    Trois Trois Quatre   5    58.5    4    6.40     0.0   90    97           97    +7
5    Syx Hotfix           3    55.5    5    8.00     5.0   85    81           81    -4
6    African Dusk         5    51.5    6    8.50     0.0   83    83           83    +0
7    Etiquette            3    55.5    7    8.80     5.0   85    81           81    -4
99   Chill In The Air     3    52.5    99   0.00     5.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Isivivane 98 104 93 +11 5.0 -
2 Sundance Kid 96 96 101 -5 0.0 -
3 Imperial Power Line 86 89 86 +3 2.5
4 Trois Trois Quatre 90 87 97 -10 0.0 -
5 Syx Hotfix 85 83 81 +2 5.0 -
6 African Dusk 83 83 83 ✓ Match 0.0 -
7 Etiquette 85 83 81 +2 5.0 -
99 Chill In The Air - 82 75 +7 5.0 -
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