Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Izanami
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
8 / 11
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    Izanami              3    60.0    1    0.00     7.5   69    69           69    +0
2    Engelandpark         2    59.0    2    1.00     5.0   66    72           72    +6
3    Kentucky Lassie      3    59.0    3    1.25     7.5   -     67           67    +67
4    Iconic Winter        2    60.0    4    3.00     5.0   68    74           74    +6
4    Ocean Flame          2    59.0    4    3.00     5.0   74    72           72    -2
6    Five Star Magic      4    60.0    6    4.00     9.0   61    66           66    +5
7    Tori's Girl          3    60.0    7    6.25     7.5   56    69           69    +13
8    Manuriki             2    59.0    8    11.00    5.0   40    72           72    +32
9    Laudium              3    60.0    9    12.25    7.5   66    69           69    +3
10   Iyoolbhanoyi         2    56.5    10   14.50    5.0   -     67           67    +67
99   Ice Spear            2    59.0    99   0.00     5.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Izanami Line 69 72 69 +3 7.5
2 Engelandpark 66 66 72 -6 5.0 -
3 Kentucky Lassie - 77 67 +10 7.5 -
4 Iconic Winter 68 68 74 -6 5.0 -
4 Ocean Flame 74 75 72 +3 5.0 -
6 Five Star Magic 61 61 66 -5 9.0 -
7 Tori's Girl 56 59 69 -10 7.5 -
8 Manuriki 40 52 72 -20 5.0 -
9 Laudium 66 62 69 -7 7.5 -
10 Iyoolbhanoyi - 44 67 -23 5.0 -
99 Ice Spear - 64 72 -8 5.0 -
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