Official NHA Assessment

Race 8: TAB 4RACING APP MR 84 HANDICAP (Open)

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Line Horse
Esquevelle
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Halberdier           4    56.5    1    0.00     4.0   77    84           77    +0
2    His Lordship         3    58.5    2    0.80     3.5   81    89           89    +8
3    Esquevelle           3    57.0    3    2.80     3.5   86    86           86    +0
4    Turbo Power          3    60.0    4    4.10     3.5   84    92           92    +8
5    Hemisphere           3    59.5    5    4.30     3.5   83    91           91    +8
6    Rockaroundtheclock   2    57.5    6    5.70     2.5   84    89           89    +5
7    Banyan               3    58.5    7    8.60     3.5   86    89           89    +3
99   Biofarmer            4    57.0    99   0.00     4.0   -     85           85    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Halberdier 77 83 77 +6 4.0 -
2 His Lordship 81 85 89 -4 3.5 -
3 Esquevelle Line 86 86 86 ✓ Match 3.5
4 Turbo Power 84 83 92 -9 3.5 -
5 Hemisphere 83 83 91 -8 3.5 -
6 Rockaroundtheclock 84 83 89 -6 2.5 -
7 Banyan 86 83 89 -6 3.5 -
99 Biofarmer - 78 85 -7 4.0 -
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