Official NHA Assessment

Race 6: MERIT RATED 90 HANDICAP (Open)

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Line Horse
Wantage
Reference for assessment
Exact Matches
1 / 4
Calculated = Official
Close Matches
2 / 4
Within 2 points
Significant Diffs
1 / 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    Bugatti Blue         7    59.5    1    0.00     0.0   89    86           89    +0
2    Wantage              8    60.0    2    1.75     0.0   90    90           90    +0
3    Edward The Seventh   7    58.5    3    3.50     0.0   87    85           85    -2
4    Citrusdal            8    55.5    4    9.50     0.0   81    78           78    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bugatti Blue 89 87 89 -2 0.0 -
2 Wantage Line 90 78 90 -12 0.0
3 Edward The Seventh (ZIM) 87 85 85 ✓ Match 0.0 -
4 Citrusdal 81 81 78 +3 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