Official NHA Assessment

Race 2: MERIT RATED 70 HANDICAP (F&M) (Open to fillies and mares only)

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Line Horse
Justadoreher
Reference for assessment
Exact Matches
0 / 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    Jacky Sparrow        3    58.0    1    0.00     4.0   71    52           71    +0
2    Justadoreher         5    57.5    2    2.00     0.0   62    62           62    +0
3    Powder Puff          4    57.5    3    3.00     2.0   62    57           57    -5
99   Ian's Ferrari        3    60.0    99   0.00     4.0   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jacky Sparrow 71 80 71 +9 4.0 -
2 Justadoreher Line 62 68 62 +6 0.0
3 Powder Puff 62 58 57 +1 2.0 -
99 Ian's Ferrari - 63 56 +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