Official NHA Assessment

Race 3: MERIT RATED 83 HANDICAP (Open)

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Line Horse
Power Ranger
Reference for assessment
Exact Matches
1 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
3 / 4
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    The Octagon          2    56.5    1    0.00     0.0   76    76           76    +0
2    Power Ranger         7    57.0    2    5.00     0.0   77    77           77    +0
3    Aerial Display       5    60.0    3    5.05     0.0   83    83           83    +0
4    Karvani              7    59.5    4    15.05    0.0   82    82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Octagon 76 76 76 ✓ Match 0.0 -
2 Power Ranger Line 77 69 77 -8 0.0
3 Aerial Display 83 68 83 -15 0.0 -
4 Karvani 82 73 82 -9 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