Official NHA Assessment

Race 4: MERIT RATED 75 HANDICAP (Open)

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Line Horse
Prince Of Kimberly
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 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    Qunetra              4    58.0    1    0.00     0.5   69    72           69    +0
2    Prince Of Kimberly   3    55.0    2    2.50     2.0   67    67           67    +0
3    Zazu                 6    58.5    3    4.25     0.0   70    76           76    +6
4    Cutback              6    58.5    4    5.50     0.0   70    74           74    +4
5    Bruce's Spirit       6    60.0    5    10.50    0.0   73    77           77    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Qunetra 69 83 69 +14 0.5 -
2 Prince Of Kimberly Line 67 73 67 +6 2.0
3 Zazu 70 71 76 -5 0.0 -
4 Cutback 70 63 74 -11 0.0 -
5 Bruce's Spirit 73 55 77 -22 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