Official NHA Assessment

Race 8: SOUTH AFRICAN FILLIES SPRINT (Grade 1) brought to you by The Witness (For Fillies and Mares at Weight-For-Age)

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Line Horse
Double Grand Slam
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
1 / 15
Within 2 points
Significant Diffs
13 / 15
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    Asiye Phambili       3    60.0    1    0.00     2.5   120   123          123   +3
2    Double Grand Slam    2    60.0    2    0.20     1.5   125   125          125   +0
3    Princess Of Gaul     2    58.5    3    2.60     1.5   114   122          122   +8
4    Hierarchy            2    58.5    4    2.65     1.5   105   122          122   +17
5    Perfect Miracle      3    58.5    5    2.95     2.5   110   120          120   +10
6    Whistle The Tune     2    60.0    6    3.00     1.5   115   125          125   +10
7    Mia Moo              4    60.0    7    4.20     0.0   119   128          128   +9
8    One Fine Winter      2    58.5    8    4.90     1.5   105   122          122   +17
9    Buttercup Baby       3    60.0    9    5.40     2.5   98    123          123   +25
10   Rodeo Drive          2    60.0    10   5.45     1.5   113   125          125   +12
11   Sweetie Darling      2    60.0    11   6.95     1.5   100   125          125   +25
12   Just Be Lekker       4    60.0    12   9.45     0.0   110   128          128   +18
13   Mai Sensation        3    60.0    13   16.55    2.5   107   123          123   +16
14   Regeneration         3    60.0    14   21.75    2.5   102   123          123   +21
99   Elegantrix           2    58.5    99   0.00     1.5   -     122          122   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Asiye Phambili 120 120 123 -3 2.5 -
2 Double Grand Slam Line 125 125 125 ✓ Match 1.5
3 Princess Of Gaul 114 114 122 -8 1.5 -
4 Hierarchy 105 105 122 -17 1.5 -
5 Perfect Miracle 110 110 120 -10 2.5 -
6 Whistle The Tune 115 115 125 -10 1.5 -
7 Mia Moo 119 119 128 -9 0.0 -
8 One Fine Winter 105 105 122 -17 1.5 -
9 Buttercup Baby 98 98 123 -25 2.5 -
10 Rodeo Drive 113 113 125 -12 1.5 -
11 Sweetie Darling 100 100 125 -25 1.5 -
12 Just Be Lekker 110 110 128 -18 0.0 -
13 Mai Sensation 107 107 123 -16 2.5 -
14 Regeneration 102 102 123 -21 2.5 -
99 Elegantrix - 106 122 -16 1.5 -
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