Official NHA Assessment

Race 3: MERIT RATED 85 HANDICAP (Open)

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Line Horse
Power Ranger
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 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    53.5    1    0.00     0.0   72    69           72    +0
2    Admirals Chance      5    59.5    2    0.50     0.0   84    86           86    +2
3    Power Ranger         7    60.0    3    1.50     0.0   85    85           85    +0
4    Tradition            4    58.5    4    13.50    4.0   82    71           72    -10
99   Aerial Display       5    56.0    99   0.00     0.0   -     74           74    +0
99   Nandine              3    56.0    99   0.00     7.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captive Moon 72 75 72 +3 0.0 -
2 Admirals Chance 84 77 86 -9 0.0 -
3 Power Ranger Line 85 69 85 -16 0.0
4 Tradition 82 77 72 +5 4.0 -
99 Aerial Display - 68 74 -6 0.0 -
99 Nandine - 60 60 ✓ Match 7.0 -
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