Official NHA Assessment

Race 1: WHAT A WINTER MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R60 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Pacific Green        2    60.0    1    0.00     3.5   -     -            -     +0
2    Bonika               2    60.0    2    0.75     3.5   -     -            -     +0
3    Philosophise         5    60.0    3    2.75     0.0   -     -            -     +0
4    Act Naturally        2    60.0    4    3.15     3.5   -     -            -     +0
5    Bella Mo             2    60.0    5    6.40     3.5   -     -            -     +0
6    Share Alike          2    60.0    6    10.65    3.5   -     -            -     +0
7    My Cherie Amour      2    60.0    7    11.40    3.5   -     -            -     +0
8    Bad Hair Day         2    60.0    8    19.90    3.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pacific Green - 91 - +91 3.5 -
2 Bonika - 80 - +80 3.5 -
3 Philosophise - 80 - +80 0.0 -
4 Act Naturally - 72 - +72 3.5 -
5 Bella Mo - 62 - +62 3.5 -
6 Share Alike - 65 - +65 3.5 -
7 My Cherie Amour - 75 - +75 3.5 -
8 Bad Hair Day - 47 - +47 3.5 -
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