Official NHA Assessment

Race 5: KWAZULU-NATAL STAKES (Listed) (For Fillies and Mares)

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Line Horse
Amarandi
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
2 / 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    Ancient Epic         3    54.0    1    0.00     3.0   84    84           84    +0
2    Sabatini             2    55.5    2    0.05     2.0   89    89           89    +0
3    Amarandi             3    55.5    3    0.65     3.0   87    87           87    +0
4    Warship              3    57.0    4    1.15     3.0   93    90           90    -3
5    Sweet Symphony       3    54.0    5    1.45     3.0   80    84           84    +4
6    Bevies Delight       5    57.0    6    1.75     0.0   97    96           96    -1
7    Diamond Girl         4    51.5    7    1.95     3.5   76    78           78    +2
8    Princess Tea         3    51.5    8    2.65     3.0   79    79           79    +0
9    Time Fo Orchids      5    60.0    9    3.85     0.0   107   102          102   -5
10   Aunty Lizzy          3    60.0    10   4.15     3.0   102   96           96    -6
99   Sashay Away          3    58.5    99   0.00     3.0   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ancient Epic 84 88 84 +4 3.0 -
2 Sabatini 89 91 89 +2 2.0 -
3 Amarandi Line 87 91 87 +4 3.0
4 Warship 93 87 90 -3 3.0 -
5 Sweet Symphony 80 86 84 +2 3.0 -
6 Bevies Delight 97 101 96 +5 0.0 -
7 Diamond Girl 76 74 78 -4 3.5 -
8 Princess Tea 79 77 79 -2 3.0 -
9 Time Fo Orchids 107 109 102 +7 0.0 -
10 Aunty Lizzy 102 84 96 -12 3.0 -
99 Sashay Away - 88 93 -5 3.0 -
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