Official NHA Assessment

Race 4: MERIT RATED 68 HANDICAP (Open)

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Line Horse
Days Gone By
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
4 / 5
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    Power Ranger         7    56.0    1    0.00     0.0   60    72           60    +0
2    Eastern World        3    52.5    2    0.75     8.0   54    53           53    -1
3    Days Gone By         3    54.5    3    1.25     8.0   57    57           57    +0
4    Bruce's Spirit       6    60.0    4    1.75     0.0   68    83           83    +15
5    My Secret Place      5    57.5    5    2.25     0.0   64    78           78    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Power Ranger 60 69 60 +9 0.0 -
2 Eastern World 54 52 53 -1 8.0 -
3 Days Gone By Line 57 51 57 -6 8.0
4 Bruce's Spirit 68 55 83 -28 0.0 -
5 My Secret Place 64 71 78 -7 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