Official NHA Assessment

Race 6: CARTIER PADDOCK STAKES (WFA) (Grade 1) (For Fillies & Mares at Weight For Age)

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Line Horse
Princess Calla
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 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    Captain's Ransom     4    59.5    1    0.00     3.0   126   113          113   -13
2    Chansonette          3    54.0    2    0.10     6.0   110   96           100   -10
3    Marina               4    59.5    3    0.30     3.0   108   118          118   +10
4    Princess Calla       4    59.5    4    0.70     3.0   118   118          118   +0
5    She's A Keeper       5    60.0    5    1.95     0.0   116   123          123   +7
6    Santa Therese        4    59.5    6    3.95     3.0   104   114          114   +10
7    Kailene              3    54.0    7    6.20     6.0   102   96           96    -6
8    Pretty Betty         4    59.5    8    10.20    3.0   106   113          113   +7
9    Rain In Newmarket    4    59.5    9    14.95    3.0   103   113          113   +10
10   Jet For Time         3    54.0    10   34.95    6.0   77    96           96    +19
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captain's Ransom 126 124 113 +11 3.0 -
2 Chansonette 110 113 100 +13 6.0 -
3 Marina 108 112 118 -6 3.0 -
4 Princess Calla Line 118 127 118 +9 3.0
5 She's A Keeper 116 117 123 -6 0.0 -
6 Santa Therese 104 103 114 -11 3.0 -
7 Kailene 102 79 96 -17 6.0 -
8 Pretty Betty 106 94 113 -19 3.0 -
9 Rain In Newmarket 103 100 113 -13 3.0 -
10 Jet For Time 77 61 96 -35 6.0 -
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