Official NHA Assessment

Race 3: MERIT RATED 75 HANDICAP (F&M) ()

Back to Race
Line Horse
Duchess Of War
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
2 / 4
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Ian's Ferrari        3    57.5    1    0.00     6.0   69    54           69    +0
2    Cutback              6    56.0    2    0.50     0.0   66    68           68    +2
3    Duchess Of War       2    54.0    3    1.00     0.0   63    63           63    +0
4    Zazu                 6    60.0    4    4.00     0.0   74    72           72    -2
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ian's Ferrari 69 63 69 -6 6.0 -
2 Cutback 66 63 68 -5 0.0 -
3 Duchess Of War Line 63 55 63 -8 0.0
4 Zazu 74 71 72 -1 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