Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win BSA / CRS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 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    Blown Away           2    60.0    1    0.00     2.0   -     -            -     +0
2    Tower Of London      2    60.0    2    5.50     2.0   -     -            -     +0
3    Arlu                 2    60.0    3    5.60     2.0   -     -            -     +0
4    Priceless Treasure   2    57.5    4    8.35     2.0   -     -            -     +0
5    Ivy                  2    57.5    5    8.85     2.0   -     -            -     +0
6    Cherry Lane          2    57.5    6    12.85    2.0   -     -            -     +0
7    Mind Freeze          2    57.5    7    20.10    2.0   -     -            -     +0
8    Call My Bluff        2    57.5    8    22.10    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 Blown Away - 81 - +81 2.0 -
2 Tower Of London - 70 - +70 2.0 -
3 Arlu - 68 - +68 2.0 -
4 Priceless Treasure - 70 - +70 2.0 -
5 Ivy - 67 - +67 2.0 -
6 Cherry Lane - 66 - +66 2.0 -
7 Mind Freeze - 72 - +72 2.0 -
8 Call My Bluff - - - ✓ Match 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