Official NHA Assessment

Race 4: BETWAY AVIATOR FM 91 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Flame Flower
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 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    Definitely Maybe     3    58.5    1    0.00     8.0   88    92           88    +0
2    Aerial View          3    53.5    2    0.50     8.0   78    87           87    +9
3    Flame Flower         3    51.0    3    0.75     8.0   81    81           81    +0
4    Carbonado            2    60.0    4    1.00     0.0   92    115          115   +23
5    Twice To Heaven      3    57.0    5    1.25     8.0   85    93           93    +8
6    Tried And True       5    52.5    6    1.35     0.0   73    99           99    +26
7    Double Check         3    60.0    7    7.60     8.0   91    95           95    +4
99   Lady Mistico         2    59.0    99   0.00     0.0   -     109          109   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Definitely Maybe 88 97 88 +9 8.0 -
2 Aerial View 78 82 87 -5 8.0 -
3 Flame Flower Line 81 78 81 -3 8.0
4 Carbonado 92 92 115 -23 0.0 -
5 Twice To Heaven 85 72 93 -21 8.0 -
6 Tried And True 73 75 99 -24 0.0 -
7 Double Check 91 85 95 -10 8.0 -
99 Lady Mistico - 75 109 -34 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