Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (3-year-old Fillies) (For Maiden 3-year-old Fillies)

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Line Horse
Kind Of Blue
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Aimee's Idol         3    60.0    1    0.00     7.0   -     -16          -     +0
2    Dream Scape          5    60.0    2    0.50     0.0   67    3            57    -10
3    Kind Of Blue         2    60.0    3    2.50     0.0   -     -            -     +0
4    Makaha Beach         2    60.0    4    2.55     0.0   55    -            52    -3
5    Tufaan               2    60.0    5    3.05     0.0   66    -            62    -4
6    Maiguru              2    60.0    6    4.80     0.0   71    -2           61    -10
7    Mia Calice           2    60.0    7    6.30     0.0   62    -2           52    -10
99   Aunt Liberty         2    60.0    99   0.00     0.0   -     -2           -2    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aimee's Idol - 61 - +61 7.0 -
2 Dream Scape 67 56 57 -1 0.0 -
3 Kind Of Blue Line - 58 - +58 0.0
4 Makaha Beach 55 62 52 +10 0.0 -
5 Tufaan 66 55 62 -7 0.0 -
6 Maiguru 71 66 61 +5 0.0 -
7 Mia Calice 62 60 52 +8 0.0 -
99 Aunt Liberty - 38 -2 +40 0.0 -
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