Official NHA Assessment

Race 1: COLLEGIATE GIRLS HIGH SCHOOL MAIDEN JUVENILE PLATE (Fillies) (For 2 year old fillies)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 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    Errols Legacy        2    60.0    1    0.00     1.0   -     -            -     +0
2    Winning Grace        2    60.0    2    1.75     1.0   -     -            -     +0
3    Quirk Of Fate        2    60.0    3    6.75     1.0   -     -            -     +0
4    Fire Glow            4    60.0    4    10.75    2.5   -     -            -     +0
5    Si Gioca             2    60.0    5    11.00    1.0   -     -            -     +0
6    Butterfly Queen      2    60.0    6    12.25    1.0   -     -            -     +0
7    Anam Cara            2    60.0    7    16.25    1.0   -     -            -     +0
8    Magic Measure        2    60.0    8    19.00    1.0   -     -            -     +0
9    Tibetan Temptress    2    60.0    9    19.50    1.0   -     -            -     +0
10   Mauna Loa            2    60.0    10   20.00    1.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Errols Legacy - 80 - +80 1.0 -
2 Winning Grace - 62 - +62 1.0 -
3 Quirk Of Fate - 55 - +55 1.0 -
4 Fire Glow - 67 - +67 2.5 -
5 Si Gioca - 62 - +62 1.0 -
6 Butterfly Queen - 63 - +63 1.0 -
7 Anam Cara - - - ✓ Match 1.0 -
8 Magic Measure - 28 - +28 1.0 -
9 Tibetan Temptress - 40 - +40 1.0 -
10 Mauna Loa - 56 - +56 1.0 -
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