Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win BSA / CRS Bonus)

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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
7 / 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    Augusta Rosso        2    60.0    1    0.00     2.0   -     -            -     +0
2    You're So Special    2    60.0    2    1.00     2.0   -     -            -     +0
3    Olive Oyl            2    60.0    3    1.25     2.0   -     -            -     +0
4    Jet Set Run          2    60.0    4    4.50     2.0   -     -            -     +0
5    Red Lhasa            2    60.0    5    5.00     2.0   -     -            -     +0
6    Buddleja             2    60.0    6    24.25    2.0   -     -            -     +0
7    San Gimignano        2    60.0    7    34.75    2.0   -     -            -     +0
99   Darlingbudsofmay     2    60.0    99   0.00     2.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Augusta Rosso - 86 - +86 2.0 -
2 You're So Special - 83 - +83 2.0 -
3 Olive Oyl - 77 - +77 2.0 -
4 Jet Set Run - 80 - +80 2.0 -
5 Red Lhasa - 63 - +63 2.0 -
6 Buddleja - 59 - +59 2.0 -
7 San Gimignano - 44 - +44 2.0 -
99 Darlingbudsofmay - 70 - - 2.0 -
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