Official NHA Assessment

Race 9: TAB CAMELLIA STAKES (Grade 2) (For Fillies and Mares)

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Line Horse
Rodeo Drive
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
6 / 10
Within 2 points
Significant Diffs
3 / 10
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    Perfect Miracle      3    57.0    1    0.00     3.0   96    105          102   +6
2    Rodeo Drive          2    60.0    2    0.75     2.0   113   113          113   +0
3    Rachel Wall          2    57.0    3    1.15     2.0   105   107          107   +2
4    Whistle The Tune     2    59.0    4    2.05     2.0   116   111          111   -5
5    Destiny Of Fire      2    59.0    5    2.10     2.0   100   111          111   +11
6    One Fine Winter      2    57.0    6    2.30     2.0   105   107          107   +2
7    Chrome Tourmaline    4    59.0    7    2.90     3.5   107   108          108   +1
8    Almond Sea           3    59.0    8    3.80     3.0   119   109          109   -10
9    Rifle Queen          2    57.0    9    20.80    2.0   105   107          107   +2
99   Green Diamond        2    58.0    99   0.00     2.0   -     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 Perfect Miracle 96 110 102 +8 3.0 -
2 Rodeo Drive Line 113 113 113 ✓ Match 2.0
3 Rachel Wall 105 107 107 ✓ Match 2.0 -
4 Whistle The Tune 116 115 111 +4 2.0 -
5 Destiny Of Fire 100 105 111 -6 2.0 -
6 One Fine Winter 105 105 107 -2 2.0 -
7 Chrome Tourmaline 107 106 108 -2 3.5 -
8 Almond Sea 119 118 109 +9 3.0 -
9 Rifle Queen 105 105 107 -2 2.0 -
99 Green Diamond - 111 109 +2 2.0 -
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