Official NHA Assessment

Race 4: MERIT RATED 85 HANDICAP (Open)

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Line Horse
Guerra
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 6
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    Captive Moon         6    55.0    1    0.00     0.0   75    82           75    +0
2    Guerra               4    57.5    2    2.00     4.5   81    81           81    +0
3    Zazu                 6    59.5    3    7.00     0.0   84    91           91    +7
4    Cutback              6    55.0    4    7.50     0.0   75    82           82    +7
5    Nandine              3    56.0    5    8.75     8.0   77    68           68    -9
6    Power Ranger         7    60.0    6    99.99    0.0   85    92           92    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captive Moon 75 75 75 ✓ Match 0.0 -
2 Guerra Line 81 86 81 +5 4.5
3 Zazu 84 71 91 -20 0.0 -
4 Cutback 75 63 82 -19 0.0 -
5 Nandine 77 60 68 -8 8.0 -
6 Power Ranger 85 69 92 -23 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