Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN JUVENILE PLATE (Fillies) (For Maiden 2 year-old Fillies)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
8 / 9
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    My Mia               2    60.0    1    0.00     0.5   -     -            -     +0
2    Spring Fever         2    60.0    2    0.75     0.5   -     -            -     +0
3    Lady Chartouche      2    60.0    3    1.75     0.5   -     -            -     +0
4    Texas Tornado        2    60.0    4    5.25     0.5   -     -            -     +0
5    Absolute Pleasure    2    60.0    5    6.50     0.5   -     -            -     +0
6    Lovin' You Baby      2    60.0    6    11.75    0.5   -     -            -     +0
7    Double Duty          2    56.0    7    12.00    0.5   -     -            -     +0
8    Karoo Magic          2    60.0    8    13.25    0.5   -     -            -     +0
9    Likeable             2    60.0    9    13.30    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Mia - 69 - +69 0.5 -
2 Spring Fever - 53 - +53 0.5 -
3 Lady Chartouche - 64 - +64 0.5 -
4 Texas Tornado - 55 - +55 0.5 -
5 Absolute Pleasure - 69 - +69 0.5 -
6 Lovin' You Baby - 58 - +58 0.5 -
7 Double Duty - - - ✓ Match 0.5 -
8 Karoo Magic - 58 - +58 0.5 -
9 Likeable - 62 - +62 0.5 -
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