Official NHA Assessment

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

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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    Peace Frog           2    60.0    1    0.00     0.5   -     -            -     +0
2    Josi Mo              2    60.0    2    0.50     0.5   -     -            -     +0
3    The Lady Love        2    60.0    3    2.00     0.5   -     -            -     +0
4    Bella Attrice        2    60.0    4    3.25     0.5   -     -            -     +0
5    Swiftwinged          2    60.0    5    3.50     0.5   -     -            -     +0
6    Magmalicious         2    60.0    6    5.75     0.5   -     -            -     +0
7    Lady D'arbanville    2    60.0    7    7.00     0.5   -     -            -     +0
8    Time For Katie       2    60.0    8    7.75     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 Peace Frog - 71 - +71 0.5 -
2 Josi Mo - 56 - +56 0.5 -
3 The Lady Love - 63 - +63 0.5 -
4 Bella Attrice - 66 - +66 0.5 -
5 Swiftwinged - 62 - +62 0.5 -
6 Magmalicious - 61 - +61 0.5 -
7 Lady D'arbanville - 70 - +70 0.5 -
8 Time For Katie - 52 - +52 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