Official NHA Assessment

Race 8: SCHWEPPES MAJORCA STAKES (WFA) (Grade 1) (For Fillies and Mares at weight for age)

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Line Horse
Zarina
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
7 / 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    60.0    1    0.00     2.5   126   118          118   -8
2    Chansonette          3    55.0    2    0.40     5.0   118   108          108   -10
3    Princess Calla       4    60.0    3    1.15     2.5   118   122          122   +4
4    Zarina               4    60.0    4    3.90     2.5   119   119          119   +0
5    She's A Keeper       5    60.0    5    5.40     0.0   116   123          123   +7
6    Santa Therese        4    60.0    6    5.60     2.5   106   118          118   +12
7    Major Attraction     4    60.0    7    6.10     2.5   103   118          118   +15
8    Kailene              3    55.0    8    8.35     5.0   102   103          103   +1
9    Pretty Betty         4    60.0    9    8.65     2.5   104   118          118   +14
10   Mercury Rising       3    55.0    10   8.75     5.0   105   103          103   -2
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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 126 124 118 +6 2.5 -
2 Chansonette 118 113 108 +5 5.0 -
3 Princess Calla 118 127 122 +5 2.5 -
4 Zarina Line 119 111 119 -8 2.5
5 She's A Keeper 116 117 123 -6 0.0 -
6 Santa Therese 106 103 118 -15 2.5 -
7 Major Attraction 103 103 118 -15 2.5 -
8 Kailene 102 79 103 -24 5.0 -
9 Pretty Betty 104 94 118 -24 2.5 -
10 Mercury Rising 105 106 103 +3 5.0 -
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