Official NHA Assessment

Race 8: HOBDAY EQUESTRIAN ENTERPRISES CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

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Line Horse
Lady Look Alike
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
2 / 9
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    La Divina            4    57.5    1    0.00     0.5   75    75           75    +0
2    Lady Look Alike      4    57.0    2    0.05     0.5   74    74           74    +0
3    Hunga Tonga          3    57.5    3    0.35     2.0   79    77           77    -2
4    Una The Unicorn      2    49.5    4    1.10     0.0   85    64           75    -10
5    Oni San              2    60.0    5    2.35     0.0   80    83           83    +3
6    Diamond Bomber       2    57.5    6    2.55     0.0   79    78           78    -1
7    Jou Lekker Ding      3    57.5    7    2.95     2.0   79    74           74    -5
8    Hampstead Heath      4    61.5    8    3.25     0.5   83    85           85    +2
9    Kleinzee             3    59.0    9    4.75     2.0   82    75           75    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 La Divina 75 77 75 +2 0.5 -
2 Lady Look Alike Line 74 77 74 +3 0.5
3 Hunga Tonga 79 78 77 +1 2.0 -
4 Una The Unicorn 85 80 75 +5 0.0 -
5 Oni San 80 78 83 -5 0.0 -
6 Diamond Bomber 79 79 78 +1 0.0 -
7 Jou Lekker Ding 79 80 74 +6 2.0 -
8 Hampstead Heath 83 75 85 -10 0.5 -
9 Kleinzee 82 77 75 +2 2.0 -
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