Official NHA Assessment

Race 6: JACARANDA HANDICAP (Listed) (For Fillies and Mares)

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Line Horse
Terra Time
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 11
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    Bureau des Legende   3    55.0    1    0.00     4.5   94    90           94    +0
2    Queen Of Shadows     3    54.0    2    0.40     4.5   91    93           93    +2
3    Terra Time           3    58.5    3    1.00     4.5   101   101          101   +0
4    Sister Light         3    52.0    4    1.90     4.5   86    87           87    +1
5    Juliet Tango         6    53.5    5    2.00     0.0   91    99           99    +8
6    Gilded Butterfly     3    61.0    6    2.50     4.5   106   104          104   -2
7    Bold Fortune         4    55.5    7    2.60     2.0   95    98           98    +3
8    Evening Primrose     3    54.0    8    4.60     4.5   92    88           88    -4
9    Tipsy Tarragon       2    55.0    9    5.85     0.0   103   99           99    -4
10   Clafoutis            3    56.0    10   6.60     4.5   96    92           92    -4
11   Eternal Life         3    55.0    11   14.60    4.5   94    90           90    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bureau des Legende 94 97 94 +3 4.5 -
2 Queen Of Shadows 91 95 93 +2 4.5 -
3 Terra Time Line 101 96 101 -5 4.5
4 Sister Light 86 96 87 +9 4.5 -
5 Juliet Tango 91 81 99 -18 0.0 -
6 Gilded Butterfly 106 108 104 +4 4.5 -
7 Bold Fortune 95 83 98 -15 2.0 -
8 Evening Primrose 92 77 88 -11 4.5 -
9 Tipsy Tarragon 103 108 99 +9 0.0 -
10 Clafoutis 96 96 92 +4 4.5 -
11 Eternal Life 94 88 90 -2 4.5 -
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