Official NHA Assessment

Race 4: MERIT RATED 76 HANDICAP F&M (Open)

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Line Horse
My Secret Place
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
2 / 5
Within 2 points
Significant Diffs
2 / 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    Obscure              4    60.0    1    0.00     2.0   76    70           76    +0
2    My Secret Place      5    55.5    2    2.50     0.0   67    67           67    +0
3    Cutback              6    57.5    3    6.00     0.0   71    69           69    -2
4    Coffeeberry          5    60.0    4    7.00     0.0   76    74           74    -2
5    Zazu                 6    58.0    5    25.00    0.0   72    70           70    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Obscure 76 87 76 +11 2.0 -
2 My Secret Place Line 67 71 67 +4 0.0
3 Cutback 71 63 69 -6 0.0 -
4 Coffeeberry 76 72 74 -2 0.0 -
5 Zazu 72 71 70 +1 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