Official NHA Assessment

Race 4: HSH PRINCESS CHARLENE STARLING STAKES (Grade 3) (For 3 year-old Fillies)

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Line Horse
Feather Boa
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
10 / 13
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    Miss Daisy           2    60.0    1    0.00     0.0   105   108          108   +3
2    Feather Boa          2    60.0    2    0.20     0.0   108   108          108   +0
3    Gimme A Shot         2    60.0    3    0.50     0.0   102   113          113   +11
4    Berengaria           2    60.0    4    2.50     0.0   84    110          110   +26
5    None Other           5    60.0    5    3.25     0.0   97    110          110   +13
6    Orarari Gold         2    60.0    6    4.50     0.0   101   108          108   +7
7    Littlemarysunshine   2    60.0    7    5.50     0.0   93    108          108   +15
8    Rock The Fox         2    60.0    8    5.75     0.0   104   108          108   +4
9    Typeset              2    60.0    9    7.75     0.0   94    108          108   +14
10   Captain Peg          5    60.0    10   8.00     0.0   106   108          108   +2
11   River Queraress      2    60.0    11   8.25     0.0   111   108          108   -3
12   Time For Glory       2    60.0    12   9.50     0.0   92    108          108   +16
13   Antigua Night        2    60.0    13   20.00    0.0   100   108          108   +8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Miss Daisy 105 108 108 ✓ Match 0.0 -
2 Feather Boa Line 108 114 108 +6 0.0
3 Gimme A Shot 102 110 113 -3 0.0 -
4 Berengaria 84 79 110 -31 0.0 -
5 None Other 97 115 110 +5 0.0 -
6 Orarari Gold 101 101 108 -7 0.0 -
7 Littlemarysunshine 93 95 108 -13 0.0 -
8 Rock The Fox 104 94 108 -14 0.0 -
9 Typeset 94 94 108 -14 0.0 -
10 Captain Peg 106 100 108 -8 0.0 -
11 River Queraress 111 88 108 -20 0.0 -
12 Time For Glory 92 77 108 -31 0.0 -
13 Antigua Night 100 97 108 -11 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