Official NHA Assessment

Race 3: MERIT RATED 76 HANDICAP F&M (Open)

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Line Horse
Walking Thru Time
Reference for assessment
Exact Matches
1 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
2 / 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    Ian's Ferrari        3    58.0    1    0.00     3.0   72    67           72    +0
2    Walking Thru Time    3    57.0    2    0.50     3.0   70    70           70    +0
3    Star Aglow           3    60.0    3    2.25     3.0   76    74           74    -2
4    Nandine              3    60.0    4    3.00     3.0   76    73           73    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ian's Ferrari 72 63 72 -9 3.0 -
2 Walking Thru Time Line 70 73 70 +3 3.0
3 Star Aglow 76 74 74 ✓ Match 3.0 -
4 Nandine 76 60 73 -13 3.0 -
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