Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION FM 75 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Masaaken (AUS)
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Cap Estel            3    52.0    1    0.00     7.0   73    49           73    +0
2    Masaaken (AUS)       4    59.0    2    0.60     4.0   75    75           75    +0
3    Zazu                 6    52.0    3    1.70     0.0   70    68           68    -2
4    Aryaam               4    59.0    4    3.20     4.0   75    72           72    -3
5    Jive Express         6    60.0    5    4.00     0.0   75    81           81    +6
6    Smiley River         5    59.5    6    4.30     0.0   74    79           79    +5
7    Stunning Kitten      5    57.5    7    4.40     0.0   70    75           75    +5
8    Western Dance        6    55.5    8    7.00     0.0   66    70           70    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cap Estel 73 71 73 -2 7.0 -
2 Masaaken (AUS) Line 75 92 75 +17 4.0
3 Zazu 70 71 68 +3 0.0 -
4 Aryaam 75 71 72 -1 4.0 -
5 Jive Express 75 70 81 -11 0.0 -
6 Smiley River 74 69 79 -10 0.0 -
7 Stunning Kitten 70 66 75 -9 0.0 -
8 Western Dance 66 60 70 -10 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