Official NHA Assessment

Race 1: HEINEKEN SUMMER JUVENILE STAKES (Listed) (For 2 yo R100 000 Win BSA / CRS Bonus. Leg 2 Sum Juv Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
9 / 11
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    Wild Wild Green      2    57.5    1    0.00     3.5   -     -            -     +0
2    Clair De Lune        2    57.5    2    1.25     3.5   -     -            -     +0
3    Instaworthy          2    57.5    3    3.50     3.5   -     -            -     +0
4    She's My World       2    57.5    4    3.90     3.5   -     -            -     +0
5    Parental Guidance    2    60.0    5    4.30     3.5   -     -            -     +0
6    Silva City           2    57.5    6    4.80     3.5   -     -            -     +0
7    Porridge Boy         2    60.0    7    5.80     3.5   -     -            -     +0
8    Churchillian         2    60.0    8    6.80     3.5   -     -            -     +0
9    Call Of The Karoo    2    57.5    9    9.55     3.5   -     -            -     +0
99   Trailfinder          2    60.0    99   0.00     3.5   -     -            -     +0
99   Whatastar            2    57.5    99   0.00     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 Wild Wild Green - 88 - +88 3.5 -
2 Clair De Lune - 84 - +84 3.5 -
3 Instaworthy - 107 - +107 3.5 -
4 She's My World - 106 - +106 3.5 -
5 Parental Guidance - 82 - +82 3.5 -
6 Silva City - 99 - +99 3.5 -
7 Porridge Boy - 101 - +101 3.5 -
8 Churchillian - 95 - +95 3.5 -
9 Call Of The Karoo - 79 - +79 3.5 -
99 Trailfinder - 82 - - 3.5 -
99 Whatastar - 75 - - 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